QUALITY Waste Processing Plant & Waste Sorting Plant FACTORY

Raw Material Preparation:Petroleum coke or other carbon-rich materials are mixed with a binder like coal tar pitch. The mixture is shaped into desired forms, such as blocks or rods. Placement in Furnace:The shaped carbon material is packed with a sand-like material (silicon carbide) in an electric furnace to help control the temperature during heating. Heating (Graphitization):An electric current is passed through the furnace, heating the material to temperatures around 2500–3000°C. At these temperatures, carbon atoms rearrange into graphite’s crystalline structure. Cooling:The material is slowly cooled down over a period to ensure proper crystallization. Rapid cooling can cause cracking or defects in the graphite structure. Graphite Extraction:Once cooled, the synthetic graphite is removed from the furnace, with impurities being brushed or blasted off. Final Processing:The synthetic graphite may undergo further shaping, cutting, or purification, depending on its intended application, such as electrodes or battery-grade graphite.

Mining:Graphite is extracted from natural deposits through surface or underground mining. The raw ore is typically mixed with other materials, requiring further processing. Flotation:The mined graphite ore undergoes froth flotation, where water and chemicals separate the graphite from impurities. This results in a concentrate containing higher graphite purity. Chemical Purification:The graphite concentrate is chemically treated (often with acids) to remove remaining impurities. This step increases purity to 99.95% or higher, required for battery-grade graphite. Micronization:The purified graphite is ground into fine particles to meet the size specifications for battery applications. This improves the material’s suitability for further processing. Spheronization:The graphite particles are shaped into spherical forms to increase packing density and improve conductivity in the battery anode. Spheronization enhances the material’s electrochemical performance. Coating:The spherical graphite is coated with a carbon layer, which enhances its conductivity and stability during battery cycling. This coating also protects the graphite from side reactions. Thermal Purification:In a high-temperature furnace, any remaining impurities are vaporized, achieving ultra-high purity (>99.99%). This step ensures the graphite meets stringent quality requirements for battery applications.

Graphite is natural carbon. Black, silky, and slippery. It is in pencils, batteries and lubricants. Graphitic material with the highest electrical & thermal conductivity. It is also stable at elevated temperatures, which makes it more widely used in industry. We have two ways to get graphite. It can be extracted from mines on the earth, or it can be produced synthetically. Natural graphite is mined, ground, and processed to produce a dense structure. Among them, flake graphite has the characteristics of high temperature resistance and good conductivity. Its properties based on where it has been sourced and how it has been processed. The production process of synthetic graphite is higher quality, more uniform and more flexible. The raw materials are processed in multiple stages to produce the final product. That process requires a lot of steps, but the end result is indeed quality. Synthetic graphite can be manufactured to a specification, and therefore is used for specific, critical applications, e.g., batteries and electronics.

The production of synthetic graphite involves several complex steps that require precise control of temperature, pressure, and starting materials. The process begins with carbon-containing raw materials such as petroleum coke or anthracite, which undergo a thermal and chemical transformation process. Preparing starting materials: Petroleum coke, a byproduct of oil refining, is purified, ground, and mixed with a binder such as tar or pitch. This mixture is then pressed into the desired shape. Carbonization: In this step, the material is heated to temperatures between 800 and 1,200 °C. During this process, volatile components escape, resulting in a carbon-rich but still amorphous material. Graphitization: The crucial step in converting to graphite occurs by heating to extreme temperatures of up to 3,000 °C in special graphitization furnaces. Under these conditions, the carbon atoms rearrange into a regular, graphitic structure, which gives the material its unique properties. Post-processing and refinement: Depending on the desired application, the synthetic graphite can be further refined, for example through additional purification processes, coatings, or particle size adjustment. Why synthetic graphite? Synthetic graphite has several decisive advantages over natural graphite: High purity: The controlled manufacturing process eliminates impurities, making it ideal for applications in electronics and aerospace. Uniform structure: Unlike natural graphite, synthetic graphite has a homogeneous structure that improves its mechanical and electrical properties. Tailored properties: Through targeted process control, specific properties such as electrical conductivity, thermal conductivity, or mechanical stability can be optimized. Applications for synthetic graphite Thanks to its outstanding properties, synthetic graphite is a key material for many modern technologies: Lithium-ion batteries: As an anode material, synthetic graphite contributes to the high performance and durability of modern energy storage devices Semiconductor and electronics industry: High-purity graphite is used for the production of silicon wafers and as a component in high-performance processors. High-temperature furnaces: Synthetic graphite is used for heating elements and insulation materials that must withstand extreme temperatures. Metallurgy: It is used in the form of electrodes in electric arc furnaces for steel production.

High-purity graphite with carbon content>99.99%. High purity graphite has the advantages of high temperature resistance, corrosion resistance, thermal shock resistance, small coefficient of thermal expansion, self-lubricating, small resistivity and easy machining, etc. it is widely used in metallurgy, machinery, environmental protection, Medicine, military, aerospace and other fields, It plays a very important role in the national economy, especially in the solar photovoltaic industry. The average annual growth rate of Global solar photovoltaic industry is of 40%, and China shares 70% of the world, as the world’s largest producer of solar photovoltaic. this industry in 2011 consumes high-grade graphite material upto 23,000 tons or more, and iis expected in the future photovoltaic industry Monocrystalline silicon and polysilicon demand for high-purity graphite materials will have an annual growth rate of 20% to 25%. At present, China’s graphite industry is still in the world’s low-level grade, products are mainly raw materials and primary processing products, high impurities in the product make it limited to less applications. Therefore, on the one hand, low prices of China’s graphite has lead to large volume of exportation; the other hand, the domestic market needs high purity ultra-fine graphite products, which are mainly imported from abroad. In summary, to carry out high-purity graphite production technology research, and improve product quality, is very importand to China’s high-purity graphite industry. 1 high-purity graphite production process: The production process of high-purity graphite and graphite electrode production process is different. High purity graphite requires isotropic raw materials,need to mill raw materials into a more fine powder, need to use isostatic pressing technology, the baking cycle is long, in order to achieve the deired density, it requires multiple impregnation – baking cycle, and the Graphitization cycle is also much longer than ordinary graphite 1.1 raw materials The raw materials for production of high purity graphite, including aggregates, adhesives and impregnating material. Aggregates are usually made of needle  petroleum coke and pitch coke. This is because the needle-like petroleum coke has low ash content (generally less than 1%), easy to be graphitized at high temperature, good electrical and thermal conductivity, small linear expansion coefficient and the like; With pitch coke, even that graphite obtained at the same graphitization temperature , it has higher resistivity, and higher mechanical strength, so the general production of graphitized products, in addition to petroleum coke, there is also a certain percentage of pitch coke in order to improve the mechanical strength of the product. Binder usually use coal tar, it is coal tar distillation process of the product, at room temperature for the black solid, no fixed melting point. According to the different equipment conditions and technological requirements of each enterprise, the softening point of coal tar pitch is from 50 ℃ to 250 ℃. Generally, high purity or high temperature coal tar pitch is selected for the production of high purity graphite products. The impregnant is essentially the same as the binder. It is required to increase the bulk density, impermeability, lubricity, strength and other special properties of the product. It is required to add the impregnating material after baking, graphitizing or machining. 1.2 Calcination / purification selected aggregates, because of their coking temperature or coal age is different, it contains water, impurities or volatile matter in the internal structure in some degree. if we don’t pre-excluded these substances, and use Them to produce graphite material directly, this will affect the product quality and performance, so we should do the calcination or purification process for the selected aggregate. Calcination is heat treatment for a variety of solid carbon raw materials in the isolated air conditions under high temperature. In the low-temperature drying stage, mainly to exclude moisture; in the volatile phase of the discharge phase, mainly to complete the decomposition of aromatic compounds in raw materials, and complete the condensation of certain compounds. Purification is mainly to remove some impurities. At present, the method of purification of graphite at home and abroad mainly flotation, alkali acid, hydrofluoric acid, chlorination roasting, high temperature and so on. 1.3 milling for graphite production of solid materials, although the calcination or purification of the block size has been reduced, but the particle size is still relatively large, and volatile, non-uniform composition, the need to crush aggregate size requirements to the ingredients. High-purity graphite aggregate size is usually to reach 20μm. At present, a vertical roller mill is used for grinding the powder having an average particle size of 10 to 20 μm. 1.4 Pellet the milled powder, which is dispersible and non-uniform. It needs to be mixed with the coal tar pitch binder according to a certain proportion and then put into the heating type kneading machine to mix and knead to make the material evenly distributed and make the adhesive evenly and thinly wrapped on the surface of the powder particle and penetrate and infiltrate into the surface of the powder particle . 1.5 Molding At present, there are many carbon forming methods, the main methods are extrusion molding, molding, vibration molding, isostatic pressing. High-purity graphite production using the method of isostatic pressing, it has cold isostatic pressing and hot isostatic pressing. Isostatic molding is the material placed in the soft mold, dense, sealed after vacuum, into the isostatic press cylinder, the mold outside the liquid at the same pressure from all directions on the role of the mold, pressed into cylindrical Or a rectangular product. The obtained product has isotropic structure and performance, which is the biggest advantage of isostatic graphite products. 1.6 Baking After calcination of carbon products, it goes to baking process, that is, make the raw material blocks in isolation environment, after the heat treatment (about 1000 ℃), so that the binder is charred into binder coke. This is a slow process, the whole process is divided into several stages, each stage of a series of physical and chemical reactions, including carbon aggregate surface to generate a certain thickness of the binder film, binder liquid migration, asphalt vapor Capillary condensation, gasification and surface diffusion. 1.7 Impregnation The purpose of impregnation is to impregnate the impregnating agent, such as molten asphalt, into the tiny pores formed in the product during the calcination process and the open pores existing in the aggregate coke particles to improve the bulk density, electrical conductivity, mechanical strength, Chemical corrosion and so on. Impregnation is generally carried out by pressure impregnation, the product must first be preheated, and then vacuum degassing in the impregnation tank, then add the good coal tar pitch impregnation tank, the pressure to make impregnating agent asphalt into the interior 1.8 Graphitization Graphitization refers to the high-temperature heat treatment process to make thermodynamically unstable non-graphitic carbon by thermal activation into graphite. Carbon baked goods by 2000 ~ 2800 ℃ high-temperature graphitization, the carbon product chaotic layer structure of carbon atoms lattice, into a three-dimensional ordered layered structure, while removing impurities. Graphitization methods are Acheson method, internal heat series method, intermediate frequency induction method.

The various uses of graphite derive directly from its exceptional physical properties.Graphite is characterized by its resilience to very high temperatures and to corrosion,its thermal and electrical conductivity, its mechanical resilience, its self-lubricatingproperties, its suitability for machining and the length of its service life.All these qualities make it a vital material for a whole host of industrial applications.Before we take a closer look at them, we will first recap on the history and secrets ofmanufacturing synthetic graphite. Three basic ingredients: cokes, obtained through carbonization(above 1,000C) of tar produced by distilling oil and coal, artificial graphite, which derives fromthe recycling of graphite materials carbon black or natural graphite,and additional ingredients: a derivativeof oil and carbon used to bind the parti-cles together. After inspections to check their quality, the principal ingredients are ground up. Thecoke, graphite and solid binder are then loaded into a mixer that heats them up.The rise in temperature melts the binder and ultimately moistens the grains, beforethe gradual reduction in temperature serves to enhance the viscosity of the mixuntil it solidifiesAfter further grinding, the mix is placed in a rubber mold to be compressed orshaped and it may be extruded into a die.The volatile materials are then eliminated through baking. This extremely lengthystage (1 to 2 months)takes place at a temperature of 800C to 1,000C.Next comes the graphitization phase,which consists in heat-treating the blocks inan electric kiln at 3,000C for one to three weeks. At a very high temperature, thecarbon atoms realign themselves into hexagonal crystalline structures, which thusform artificial graphite. The substance's properties change. It becomes a goodconductor and its resilience to oxidization improves.The blocks are cut to the final dimensions and then undergo a series of tests(density, resilience, resistance to flexion, hardness, expansion coefficient, etc.)tosafeguard its quality.The first phase lasts for around four months in all.Various additional purification and impregnation steps enhance the graphite'squalities and give it additional benefits for a number of industrial processes.

Mining Graphite ore is mined using excavating machines that carry dump trucks with raw ore.The entire extraction process follows a mining plan, facilitating the selection of the most suitable ore for final products. Homogenisation The deposition of this ore on the feeding plant is systematised to form feeding piles in layers.The goal is to reduce the natural variability of the ore. Mechanical Concentration The ore is subjected to successive grinding and a mechanical process separating impurities from the graphite. The mechanical concentration aims for maximum recovery of the graphite present in the ore, preserving its physical features. Chemical Concentration The chemical concentration is used to remove the remaining impurities in the previously graphite mechanically concentrated. Hengyang uses and treats the residues of the chemical concentration in order not to pollute the environment. Filtering and drying After the chemical concentration, the graphite is washed extensively with demineralised water, reaching a neutral pH. The remaining moisture is removed in Press-type filters and rotary dryers. WORKING WITH PHYSICAL PROPERTIES Classification Screening techniques are used to classify the particles of the concentrated graphite, reaching the desired particle size distribution. Milling Jet and hammer mills grind the concentrated graphite until it reaches the desired size. The ground particles are classified, enabling control of the particle size distribution of the product generated. The different methods of grinding and classification allow for shaping of the particle, giving the graphite distinct characteristics of density and a specific surface. Briquetting In this process, agglomerated graphite grains are produced for use as carburizer and carbon additives. Intercalation Due to its extreme anisotropy, the graphite crystal enables salts to be intercalation in its structure. When heated, these salts evaporate, causing the disruption of inter-planar connections, "expanding" the graphite. Nacional de Grafite developed graphite intercalation and expansion processes compatible with the environment.

Expandable graphite is a synthesized intercalation compound of graphite that expands or exfoliates when heated. This material is manufactured by treating flake graphite with various intercalation reagents that migrate between the graphene layers in a graphite crystal and remain as stable species. ITEM No.: BE525 50Mesh ITEM Unit Standard Carbon content % ≥99.9 Ash % ≤1.0 Water % ≤1.0 volatile matter % ≤18 Expansion volume cc/g 240≤Expansion volume

Amorphous graphite granules is a natural mineral. Contrary to the name, amorphous graphite is not truly amorphous, but is a microcrystalline form of natural graphite. It is granular except in extremely fine grinds, which have a flakey structure. The term “amorphous” is applied to this form of natural graphite. Material is available in sizes ranging from mixed 1 cm and smaller particles to 10 cm lumps. Application Make steel to increase the carbon Fire-proof material Heat material and electrode compound Produce steel to expand the carbon Flame resistant material Electrode compound and thermal material Size 0-3 mm 0-6 mm 0-15mm 1-5mm 2-5mm 1-6mm Fixed carbon : 70-90% Characteristics Percent Carbon 60 – 99.9 % Particle Size Range -3/4 — 5 microns Specifications Appearance Massive lumps with flat fracture cleavage. Applications Lubricant additives Friction Materials Refractories Paints Rubber & Polymer Composites Metal Covers Thread Compounds Drilling Mud Additives Pencils

Vein Graphite (also known as Sri Lankan Graphite or Ceylon Graphite) is a naturally occurring form of pyrolitic carbon (solid carbon deposited from a fluid phase). Vein graphite has a morphology that ranges from flake-like for fine particles, needle or acicular for medium sized particles, and grains or lumps for very coarse particles. Range in size from 1-150 cm  ” material is available in sizes ranging from fine powder to 10 cm lumps. Vein graphite has the highest degree of crystalline  of all conventional graphite materials.    Vein graphite  used in electrical applications. Many of the highest quality electrical motor brushes and other current carrying applications. In friction applications it is used in advanced brake and clutch applications. Other applications  utilize flake graphite. Commercial grades are available in purities ranging from 80-99% carbon, and sizes from 3-micrometer powder to 8-10 cm lumps. Characteristics Percent Carbon 90 – 99.9 % Particle Size Range -1/4 — 5 microns Specifications Appearance Light metallic sheen and needle-like particle morphology. Applications Energy Materials Lubricants Grinding Wheels Powder Metallurgy Electrical Components Friction Materials Plastics Carbon Brushes & Parts

Carbon graphite has a unique set of physical properties that allows it to be used in environments where traditional lubricants and other self-lubricating materials will fail. It can withstand high temperatures, corrosive media, and dry atmospheres, all while maintaining a low coefficient of friction, remaining dimensionally and thermally stable, and avoiding galling and seizing. Over the course of many decades, thousands of carbon grades have been developed to handle a wide range of applications. As a result, carbon graphite can be found in countless severe service applications, ranging from jet engines to bakery ovens. Carbon graphite’s versatility is directly attributable to the highly engineered processes that go into its production. A quick look at the processes involved in carbon graphite production highlights the complexity of this material and the importance of maintaining strict controls throughout the production process.

Hello, valued readers! We are Zhengzhou Hengyang Industrial Co., Ltd., a leading manufacturer in the world of expanded vermiculite. In this blog post, we will walk you through the fascinating process of producing expanded vermiculite — a material highly sought after in the fields of agriculture, construction, and more. Production Process of Expanded Vermiculite The production process of expanded vermiculite is a carefully calibrated one that we’ve honed over years of experience. Let’s delve into the details: Mining: The process begins with the extraction of vermiculite from mines. This raw vermiculite contains water molecules trapped within its structure, which are key to the expansion process. Milling: After extraction, the vermiculite is carefully milled. This process helps to separate the layers of the mineral, preparing it for the crucial expansion stage. Expansion: The magic happens here. The milled vermiculite is subjected to extreme heat (around 800–1000°C). The trapped water molecules turn into steam, causing the vermiculite to expand. This results in the lightweight, fire-resistant, and highly absorbent product known as expanded vermiculite. Grading and Packaging: The expanded vermiculite is then graded according to particle size and packed for shipping.

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Vermiculite is a natural mineral from the group of micas. Formed mainly by silicates of iron and magnesium, its manufacture goes through the extraction of raw material in mines. The extraction is done in open-pit mines. The extracted vermiculite is processed by separating rocks and other impurities. In this way only the mineral remains, which is classified according to sizes. Subsequently a heat treatment, known as exfoliation, is performed to expand the mineral. Vermiculite has a great capacity to exfoliate when heated. When heated, vermiculite expands (exfoliates) to up to 12 times its original volume. The exfoliation process converts the dense flakes of ore into lightweight porous granules containing innumerable air layers. The exfoliated vermiculite is light and clean, has a high thermal and acoustic insulation value, is incombustible and insoluble in water and has the ability to absorb liquids. That makes it as a natural insulation for the industry and the agriculture.

Sponge iron is formed through the reduction of iron ore to metallic iron through reaction with carbon in the form of coal, etc. at approx. 1100 degree Celsius. Sponge iron is also referred to as direct reduced iron, metalized iron, or hot briquetted iron. Sponge iron is used in the iron and steel industry as a substitute for scrap in induction and electrical arc furnaces. Over the years, the shortage of expensive melting scrap has made sponge iron a significant raw material for manufacturing high quality steel.  This process is one of the oldest direct reduction methods, and its structure is based on a horizontal cement kiln. In this method, heat coal (as a reducing agent) is mixed with iron ore and sponge iron is produced in a horizontal furnace. Input iron ore: In the Midrex or HYL process, it is generally recommended to use high-quality cooked pellets with a maximum of about 30% iron ore lumps. Up to 100% of the lumps can be used in this process, and some types of raw pellets will also be used. The use of magnetite rock is not recommended as it requires high-grade hematite iron ore. Reducing agent: The advantage of this method is the possibility of using relatively low-quality thermal coal as the reducing agent. Coal in the furnace produces carbon monoxide gas, which reduces iron oxide. Despite the relatively high temperature in the furnace, the reaction rate is relatively low, and the furnace will have low capacity. There is no hydrogen gas in this process. Type of Reduction Furnace: Rotary Horizontal Furnace that operates at slightly above atmospheric pressure. The main rotary furnace consists of the preheating section, and the reduction area, with the gases caused by the reaction being discharged at a temperature of about 1000 °C and recycling systems are not anticipated, which is why this energy is generally used to generate electricity. The cooling part of the furnace is a completely separate chamber that is cooled by water from the outside. Reduction temperature: about 1000 to 1100 °C. Process history: since 1980. Process position: Stabilized and commercialized. Optimum Capacity: Approximately 100 to 150 thousand tons per module. Market share: About 23% of sponge iron total production.

Iron oxide ores taken out from the Earth are allowed to absorb carbon by a reduction process. In this natural reduction, as the iron ore is warmed up with carbon, it results in a surface with hole marks, hence the name “Sponge Iron”. The commercial process is a solid solution reduction, also called Direct-Reduced Iron (DRI). It is a different route of iron making that has been started to stop some of these problems shown by conventional blast furnaces. DRI is successfully made through coal-based systems.  HOW IS SPONGE IRON MADE? Straight reduction refers to solid-state processes which lessen iron oxides to metallic iron at temperatures below the melting point of iron. Removing oxygen from the ore by a natural process produces a relatively small percentage of steel in the world. This process uses less energy and is a natural chemical reaction process. The process includes warming the normally occurring iron oxide in the presence of carbon, which produces “sponge iron.” In this process, the oxygen is taken out without melting the ore. ●    Chemical Specifications of the direct reduction of are given below: – 3Fe2O3 + CO →2Fe3O4 + CO Fe3O4+ CO → 3 FeO + CO2 FeO + CO → Fe +CO2 ●   With Solid Carbon in reaction        CO2 + C → 2CO It is the result of the direct reduction of Iron Ore in solid form by using Carbon Monoxide (CO) derived from coal at 800-1050°C The direct reduction process uses palletized iron or natural lump ore. The raw materials that are required for the manufacture of DRI are mainly Iron ore and Coal. They are procured by our Group from the best mines in the country which gives us an edge to ensure better quality with high Fe metallic content. The DRI manufactured at our units is distinct due to its high metallic content (Fe 82% ) and consistent chemical and physical characteristics. Contact us to know more about or purchase sponge iron:+8615617816797

Sponge iron, also called direct reduced iron (DRI), is made from directly changing iron ore (in any form whatsoever) to iron by a cutback gas or carbon, produced from natural gas or coal. It is one of the many raw materials used in sponge iron. Thank you for reading this post, don't forget to contact with me if need: +8615617816797 Specifications Characteristic Requirement % Non-Magnetic 1.0 Max. % Metallic Fe 81 Min. % Total Fe 91 Min. Metallization 88 Min. %Phosphorous 0.07 Max. % Sulphur 0.03 Max % Carbon 0.1 Max. % SiO2+ Al2O3 5 Max Size A-grade lumps 3-20 mm (-3 mm 5% Max.) A-grade fines 0-6 mm (+6 mm 5% Max.)

Our Machining Division operates from an independent 25,000-square foot enclosed facility wherestate of the art machinery, systems and unimaginable capabilities are housed. All of our engineeringand machining is done in house and is meticulously handled by an expert team of seasoned engineers that produce grandiose final products around the clock,24/7. OUR SERVICES INCLUDE:.Precision Machining and Grinding.Production Machining.Large Capacity, Gear and Spline Machining. Portable Machining.Heat Treating ServicesMetalizing Services.Plating and Coating Services Our department has all types of measuring instruments complete with a Surface Plate MeasuringMachine to ensure consistent quality control. We have portable machine equipment that includes Boring Bars, Portable Miling and Turning Machinery, Portable Key Way Mills and Portable Pressing Equipment. Internal Grinding is available along with Cylindrical Grinding and Surface Grinding andour handling equipment includes overhead cranes that handle up to 100 tons. 

The first stage of the production process is to reduce the size of the quartz so it can be effectively processed to remove impurities. The raw material is fed into crushers and screened to ensure that particles are the correct size for the grinding stage. Particles not the correct size are then fed back to the crushing process. Hengyang Industry offers the following products for crushing and sizing silica sand Feeders Jaw crushers Cone crushers Multi-deck screens Single deck screens Rotary Screen

Silica Minerals represent the group of minerals being composed of silicon and oxygen forming the chemical formula SiO2. Silica can occur in macrocrystalline, crytocrystaline and amorphous form. Industry predominantly uses the crystalline form of silica, i.e. quartz. Silica is used as granular products containing the particle size range >63 µm. Fine grained silica is used as functional fillers in various applications.  Silicadioxide appears in almost 10 different crystal forms, with quartz, the most abundant representative, crystallizing in the trigonal crystal system. Quartz is mined from hard rock deposits with the most important representatives being vein deposits or pegmatitic deposits and alluvial deposits. The mineralisation respectively the deposit type, the accessory minerals, impurities occurring together with the quartz in the deposit as well as the intergrowth of the minerals in the ore matrix define the process route.    It is chemically inert, chemically resistant to almost all acids with the exception of hydroflouric acid and soluble in alkaline fluxes. Silica sand is used in paints & plastics, abrasives, ceramics, glass, filtration, surface treatment in sports & leisure facilities, construction, in sealants & adhesives, chemicals production, in foundries, in oil production, metallurgical applications and agriculture.

HENGYANG INDUSTRIAL is highly experienced in the fabrication of spray dryers and associated equipment. Over the past 20 years, we have fabricated and installed hundreds of spray dryers throughout the country. We partner with spray drying firms that provide the engineering and system design and perform the fabrication and installation portion of the project. We also fabricate and install the ancillary associated equipment such as cyclones, bustles, penthouses, ducting, platforms and stacks. Complete installation services are also provided. We have installed spray dryers throughout the country. HENGYANG INDUSTRIAL also has experience in disassembling, packaging and moving and reinstalling existing spray dryers. Spray Dryer Repair HENGYANG INDUSTRIAL inspects and repairs existing dryers. Inspections are typically done via dye penetrant to locate smaller cracks invisible to the naked eye. We are then able to remove, fabricate and reinstall entire spray dryer sections or small portions. For continuous operation plants with tight production schedules, we can rebuild entire dryers over defined timelines.

Hengyang Industry Mechanical maintenance  is a vital company in China, as it ensures the optimal performance, safety and reliability of the equipment and machinery used in mining operations. Engineers are responsible for designing, installing, inspecting, repairing and maintaining the mechanical systems and components that are essential for the extraction, processing and transportation of minerals and metals. Some of the tasks that mechanical maintenance engineers perform include: - Conducting regular preventive and corrective maintenance on mining equipment such as crushers, conveyors, pumps, fans, drills, loaders and trucks. - Troubleshooting and diagnosing mechanical problems and failures using various tools and techniques such as vibration analysis, thermography, lubrication analysis and root cause analysis. - Implementing and following maintenance standards, procedures and best practices to ensure compliance with safety, environmental and quality regulations and requirements. - Developing and updating maintenance plans, schedules and budgets to optimize the availability and efficiency of mining equipment and machinery. - Supervising and training maintenance technicians and operators on the proper use and care of mining equipment and machinery. - Evaluating and recommending new technologies, innovations and improvements to enhance the performance, safety and reliability of mining equipment and machinery. Hengyang Industry is a crucial factor in the profitability and sustainability of the mining industry, as it reduces downtime, increases productivity, lowers operating costs, extends equipment life span, minimizes environmental impact and ensures worker safety. Mechanical maintenance engineers play a key role in ensuring the smooth operation and success of mining projects.

About the program In the course of training in this specialization, students get acquainted with the basics of mining, including methods of mining and processing of minerals. They receive universal knowledge and skills in the field of design, creation and operation of machines and complexes designed for the extraction of mineral raw materials by underground and open methods, grinding and processing of minerals, construction of collectors and subway tunnels in various mining, geological and climatic conditions. Learning outcomes The opportunity to work in companies engaged in the design, modernization, operation and sale of machines and complexes; The opportunity to engage in scientific activities during training; The opportunity to work in companies engaged in the design, modernization, operation and sale of machines and complexes. Career opportunities Graduates of this specialization have the opportunity to get a job in their specialty:1. Mechanical engineer, mechanic, site mechanic, chief mechanic in leading Russian and foreign companies of the mineral and fuel and energy complex.2. Research engineer, design engineer, design engineer, process engineer in research and design institutes.3. Design engineer, research engineer in Russian and international mining and civil engineering corporations.4. Mechanical engineer, mechanic in construction companies.Graduates of this specialization have knowledge and skills that allow them to work at enterprises of both mining and civil industries.

The conventional process for extracting lithium from spodumene involves the following steps: Mining and Crushing: Spodumene ore is mined from pegmatite deposits and then crushed to reduce its particle size. Concentration: The crushed ore is subjected to gravity concentration, froth flotation, or a combination of both to separate spodumene from other minerals present in the ore. Calcination: The spodumene concentrate is heated in a rotary kiln or fluidized bed calciner at temperatures between 1000-1100°C to convert the alpha-spodumene to beta-spodumene, a more reactive form that facilitates lithium extraction. Leaching: The calcined spodumene is mixed with sulfuric acid (H2SO4) to form lithium sulfate (Li2SO4) and other byproducts. The slurry is then subjected to a solid-liquid separation process. Purification: Impurities, such as aluminum and iron, are removed from the lithium sulfate solution using various techniques, including precipitation, solvent extraction, or ion exchange. Precipitation: Lithium carbonate (Li2CO3) is precipitated from the purified lithium sulfate solution by adding sodium carbonate (Na2CO3) or another suitable reagent. Drying and Packaging: The lithium carbonate precipitate is filtered, dried, and packaged for sale or further processing into lithium hydroxide, metal, or other lithium compounds.

A rotary kiln stands as a versatile and indispensable tool. These cylindrical vessels play a crucial role in various applications, from cement production to waste incineration. Behind the seamless functioning of these kilns lie the innovations and custom solutions crafted by top rotary kiln manufacturers. Understanding the Rotary KilnA rotary kiln is a device to raise materials to high temperatures. Its name comes from its rotating cylindrical structure, which facilitates a steady flow of materials through the kiln.  The primary purpose of this kiln is to cause a physical and chemical change in the material. It can range from the simple heating of raw materials to complex reactions leading to the formation of new compounds. Industries Utilizing Rotary Type KilnsCement ProductionThe kiln is integral to cement production, serving as the heart of the clinker manufacturing process. In this application, raw materials such as limestone, clay, and silica are heated to high temperatures to form a clinker, which is then ground into cement. Lime CalcinationThe production of lime involves the calcination of limestone in the kilns. This process transforms calcium carbonate into calcium oxide, a key ingredient in various industries, including steel manufacturing and water treatment. Metallurgical ProcessesThese kilns are employed in metallurgical applications for processes like roasting, smelting, and refining. These kilns facilitate the extraction of metals from ores and the production of alloys. Waste IncinerationIn the realm of environmental sustainability, these kilns play a vital role in waste incineration. The controlled combustion of waste materials in the kilns helps minimize environmental impact and recover energy. The Role of Rotary Kiln ManufacturersTop rotary kiln manufacturers play a pivotal role in advancing industrial processes by designing and fabricating kilns tailored to the specific needs of their clients.  These manufacturers bring a wealth of expertise, technological innovation, and engineering prowess to the table, ensuring that their kilns meet and exceed industry standards. Let’s explore the key attributes that set these manufacturers apart: Expertise and ExperienceEstablished kiln manufacturers boast a wealth of experience designing and constructing kilns for diverse industries. Their expertise enables them to understand the unique challenges posed by different applications and provide effective solutions. Innovative DesignCutting-edge design is a hallmark of top kiln manufacturers. They leverage the latest advancements in materials and engineering to create kilns that are not only efficient but also environmentally friendly. Innovative design contributes to higher energy efficiency, reduced emissions, and overall improved performance. Customization CapabilitiesThe one-size-fits-all approach doesn’t work in the realm of these kilns. Leading manufacturers recognize this and offer customization options to meet the specific requirements of their clients. Whether adjusting dimensions and materials or incorporating special features, customization ensures optimal performance for diverse applications. Quality Materials and ConstructionThe durability and reliability of a rotary kiln are directly tied to the quality of materials used in its construction. Top manufacturers source and utilize high-grade materials, employing precision engineering and robust construction techniques to ensure longevity and operational stability. Energy EfficiencyIn an era where sustainability is paramount, energy efficiency is a key consideration in kiln design. Leading manufacturers focus on incorporating features that enhance energy efficiency, reducing operational costs and environmental impact. Comprehensive Support and ServiceBeyond the initial sale, top manufacturers provide comprehensive support and service packages. This includes installation assistance, maintenance support, and timely availability of spare parts. This commitment to customer satisfaction ensures the longevity and optimal performance of the kilns throughout their operational life.

The Critical Role of Acid RoastingThe conversion of spodumene ore into a usable lithium compound is a multi-step thermal and chemical process. The acid roasting stage is one of the most important and technically demanding parts of this chain. What is Beta Spodumene Conversion?After raw spodumene is heated to convert it from its alpha to beta phase (a process called calcination), it is mixed with sulfuric acid. The purpose of the indirectly heated rotary kiln is to heat this mixture in a controlled manner. This "acid roasting" step transforms the lithium within the beta spodumene into lithium sulphate (Li₂SO₄), which is soluble in water. This allows the lithium to be easily leached out in a subsequent step, separating it from the rest of the solid mineral waste. Why a Controlled Atmosphere is EssentialThe chemical reaction during acid roasting is sensitive. Introducing external gases, such as those from direct fuel combustion, would contaminate the process. This contamination can lead to undesirable side reactions, reduced conversion efficiency, and lower final product purity. An indirectly heated design is therefore not just a preference, but a necessity for this application. Why Indirect Kilns are the Ideal ToolAn indirectly heated rotary kiln works by heating the exterior of a rotating steel cylinder. The heat transfers through the cylinder wall to the material tumbling inside, without any direct contact between the material and the heat source's flame or exhaust. Enabling High-Purity ConversionBy separating the heating source from the internal process atmosphere, the kiln allows engineers to maintain the exact chemical environment needed for the acid roast. This precision is the key to achieving high lithium recovery rates. Continuous, High-Throughput ProcessingUnlike batch-style furnaces, a rotary kiln is a continuous system. Material is constantly fed into one end and discharged from the other, making it ideal for the high-volume throughput required in commercial mining operations. Robust and Reliable OperationRotary kilns are known for their heavy-duty construction and long service life. This durability is essential for handling abrasive and corrosive materials like the acid-spodumene mixture in a demanding, 24/7 industrial environment. Understanding the Broader ContextWhile vital for lithium, rotary kilns are a foundational technology used across many industries for their versatility. However, the choice between an indirect and direct heating design involves clear trade-offs. The Direct vs. Indirect Trade-offDirectly heated kilns are generally more energy-efficient, as the hot combustion gases transfer heat directly to the material. They are used for processes like cement production or simple calcination where the material is not sensitive to the exhaust gases. Indirectly heated kilns trade some of this thermal efficiency for absolute control over the process atmosphere. This makes them essential for applications like acid roasting, pyrolysis, or thermal desorption, where purity is the primary goal. General Advantages of Rotary KilnsBeyond the heating method, the rotary kiln design itself offers significant benefits. Its ability to handle a wide variety of feedstock sizes and types, combined with relatively simple operation, makes it a powerful and flexible tool for thermal processing.

Due to the complicated mineralogy and decreasing quality of many precious metal projects, the engineering design behind gold, silver, and PGM deposits continues to demand innovation and reductions in cost. Having the experience to match the right technology to the right project has never been more important. Hengyang's track record and subject matter experts are well equipped to tackle the demands of these complex deposits. Our team can help with: ​ Scoping and feasibility studies Metallurgical test programs Process flowsheet development Debottlenecking reviews Heap leach CIP and CIL Electrowinning and ADR Refractory deposits

During the typical design process each step of the project flowsheet from the mine to refining is designed independently with no consideration given to the impacts on other downstream processes. This leaves a substantial amount of synergistic value unrealized. Through our proprietary optimization software, Hengyang Industrial has been able to generate improvements of up to 40%. This can be achieved through simultaneous optimization of all aspects of the flowsheet, such as: ​​ Cutoff and head grades Stockpiling and/or blending Mine capacity Mill capacity Grinding targets and other fine tuning

Growing urban populations continue to push the demand for physical products and infrastructure. This leads to significantly increased demand for base metals such as cobalt, copper, nickel, and zinc. A transition to a green economy would further increase this demand for years to come. At Hengyang, our experience in the design of base metal processing facilities allows us to provide superior results for our clients. Our team can help with: ​ Scoping and feasibility studies Metallurgical test programs Process flowsheet development Debottlenecking reviews Flotation and grinding optimization

Wet material enter the inner cylinder, propelled through the system via a hot gas air stream. The material is continuously lifted by the cylinder flights and showered through the concurrent stream of hot gases. The three full-length interlocked concentric cylinders rotate together design for the highest velocity in the inner-pass. As lighter particles quickly lose 60% of their moisture and move out of the cylinder, heavier/denser particles are retained until they also lose 60% of their moisture. Particles graduate to the next cylinder only when they have shed enough of their moisture to be carried out. Progressively larger diameters of the cylinders cause the velocity to decrease with each subsequent pass. In this section, the partially evaporated particles are handled more gently, again only graduating to the next pass when they have shed the proper amount of moisture   Because of the earlier retention time in the first two passes, material is relatively uniform by the time it makes it into the gentle third pass. This means the product is guarded against over-drying or under-drying and ensures the optimum use of heat while producing a consistently high quality end product.

The type of rotary dryer you need depends on the qualities you want for your final product. However, the benefits of single pass rotary dryers include: Reliable use for decades if properly maintained. This style drum is best at handling larger volumes of product and dense material. Better performance with particles one inch or larger Greater flexibility in flight design helps optimize shower pattern to spread material more evenly across the air stream. Are you ready to recycle your livestock bedding or turn your waste into fertilizer? Talk to one of our knowledgeable rotary dryer specialists to find out how to get started.

Single pass rotary dryers use heated gas to dry moist material circulated through a rotating drum. Inwardly extending flights mix particles so that they move around, facilitating the evaporation process. These dryers tilt, putting gravity to work moving the materials as the drum spins.   Materials move unidirectionally through the single cylinder and are blasted by gas to reduce moisture content. In addition, single pass dryers optimize the airstream. They typically include spiral flights to speed up or slow down motion, giving you greater control over moisture removal or retention. To achieve this, we can add different patterns of spiral flights throughout the drum. These flights act like a screw conveyor. Depending on the configuration, this increases or decreases retention time.

Rotary dryers have high capacity and low maintenance costs. They provide a unique way to reduce moisture in a wide variety of materials. That’s what makes them so useful across agricultural and other industries. Here are just a few uses of rotary dryers: Transform poultry bedding or sewage sludge into nutrient-rich fertilizer Sterilize dairy bedding and recycle it Dry hemp to increase its shelf life Rotary dryers are a sustainable solution to recycling waste. At Hengyang Industries, we offer two kinds of rotary dryers, single pass and triple pass, that help customers choose the best solutions for their business or organization.

Rotary dryers are a versatile option for reducing moisture in a product. They are used with a variety of materials across a wide range of industries. Some of the novel ways our customers use rotary dryers to help repurpose materials that used to go to waste, include:   Turning poultry bedding into fertilizer Turning municipal sludge into fertilizer Drying and sterilizing dairy bedding for reuse Drying hemp to prolong storage life   Hengyang Industry produces two types of rotary drums for our rotary drying systems—single pass and triple pass. In this blog post, we will explain the differences between the two to help you decide which type will work better for your drying requirements.   Single Pass Drum for Rotary Dryer   Single pass drums consist of one cylinder internally flighted. The drum rotates at a constant speed and product moves in one direction along the drum from inlet end to outlet end while being showered through an air steam with a large cross-sectional area. This drum mechanism is better at handling larger volumes of product without choking out the airflow. If you need to dry dense material, the single pass rotary dyer is the right choice.   Single pass drums have greater flexibility in flight design, helping us optimize shower pattern to spread material more evenly across the air stream. Another option we have in flight configuration for single pass drums is adding spiral flights in different patterns throughout the drum. These flights act like a screw conveyor and, depending on the orientation, can be used to either increase or decrease retention time.   Triple Pass Drum for Rotary Dryer Triple pass drums consist of three concentric flighted cylinders nested inside of each other. The drum rotates at a constant speed and product moves in a serpentine path through the three cylinders. Product enters the inside of the inner cylinder and travels from inlet end to outlet end. When it gets close to the outlet end, the product hits the headplate at the end of the intermediate cylinder and changes direction, passing between the inner cylinder and intermediate cylinder and travels back toward the inlet end. Once it gets to the inlet end, product hits the headplate at the end of the outer cylinder, changes direction, and travels back toward the outlet end, between the intermediate cylinder and outer cylinder.   Triple pass drums are ideal for handling light materials and products that are sensitive to higher temperatures. This dryer mechanism can run at a lower temperature and has a higher air velocity due to the reduced cross-sectional area between the cylinders. Triple pass drums are more expensive up front but are more efficient and tend to have a lower cost of operation. This is because these drums run at a lower temperature, leading to less fuel consumption, and typically have a smaller drum drive since product is evenly dispersed between the three cylinders.   Another benefit to triple pass drums is that they have a smaller footprint, usually around 20% shorter than the equivalent sized single pass drum. If space is very limited, we also offer a shorter, larger diameter version of most single and triple pass drums, called a big belly drum. Big belly drums allow for an increase in drum volume without an increase in length.   When you need a reliable drying solution, our rotary dryers get the job done. We serve customers in many industries. Talk to us about your requirements and we can guide you to choose between single pass and triple pass rotary dryers. Contact us online or send us an email.sell@chinadjks.com    or   whatsapp:+8615617816797

The feldspars are by far the most abundant group of minerals and are found in igneous, metamorphic and many sedimentary rocks. Felsdpars are framework silicates where each silica tetrahedra share all corners with its four neighbouring tetrahedra. There are two types of feldspar:Soda peldspar(7 percent or higher Na2O) and Potash feldspar(8 percent or K2O).Feldspar- silica mixtures can occur naturally, such as in sand deposits, or can be obtaied from flotation of mined and crushed rock. Feldspar is a common raw material int he production of ceramics.It is used for thermoluminescence and optical dating in earth sciences and archaeology.It is an ingredient in Bon Ami brand cleaner.It is used as a glazing material. In the flooring sector, feldspar is the main constituent in the body composition. It is used as a flux, lowering the vitrifying temperature of a ceramic body during firing and forming a glassy phase. Surface tension pull the remaining solid particles together, giving a densification of the ceramic body. In tableware, feldspar gives a good fusibility for a product without defects.In sanitaryware, the use of feldspar within vitreous ceramic bodies is used to facilitate the optimization process. Basically, the two properties which make feldspars useful for downstream industries are their alkali and alumina content. Feldspars play an important role as fluxing agents in ceramics and glass applications, and are also used as functional fillers in the paint, plastic, rubber and adhesive industries. The initial production of feldspar was from pegmatite bodies. Pegmatites are bodies of rock commonly of granitic composition that consist mainly of unusually large crystals or masses of quartz, feldspar, and mica. Pegmatites crystallize during the last stages of injection of granitic magma. Feldspar is currently produced as a by-product of mining mica from pegmatites and other rocks associated with the Cherryville quartz monzonite rock (a type of granitic rock) in Cleveland County. Until recently, feldspar was also recovered from the Kings Mountain district in Cleveland and Gaston counties as a by-product of mining spodumene (source of lithium) from pegmatites. Feldspar is ground to about 20 mesh for glassmaking and to 200 mesh or finer for most ceramic and filler applications Glass, including beverage containers and insulation for housing and building construction, continued to be the leading end use of feldspar Feldspar consumption has been gradually shifting from ceramics toward glass markets. Another growing segment in the glass industry was solar glass, used in the production of solar cells. Feldspar also can be replaced in some of its end uses by clays, electric furnace slag, feldspar-silica mixtures, pyrophyllite, spodumene, or talc

Feldspar is by far the most abundant group of minerals in the earth's crust, forming about 60% of terrestrial rocks. Most deposits offer sodium feldspar as well as potassium feldspar and mixed feldspars. Feldspars are primarily used in industrial applications for their alumina and alkali content. The term feldspar encompasses a whole range of materials. Most of the products we use on a daily basis are made with feldspar: glass for drinking, glass for protection, fiberglass for insulation, the floor tiles and shower basins in our bathrooms, and the tableware from which we eat. Feldspar is part of our daily life.   Feldspar minerals are essential components in igneous, metamorphic and sedimentary rocks, to such an extent that the classification of a number of rocks is based upon feldspar content. The mineralogical composition of most feldspars can be expressed in terms of the ternary system Orthoclase (KAlSi3O8), Albite (NaAlSi3O8) and Anorthite (CaAl2Si2O8). Chemically, the feldspars are silicates of aluminium, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.   The minerals of which the composition is comprised between Albite and Anorthite are known as the plagioclase feldspars, while those comprised between Albite and Orthoclase are called the alkali feldspars due to the presence of alkali metals sodium and potassium. The alkali feldspars are of particular interest in terms of industrial use of feldspars. Amongst the numerous rocks in which they are present, feldspars are particularly abundant in igneous rocks like granite, which contains up to 50% or 70% of alkaline feldspar.   Granite, however, rarely is used for its feldspatic content. Rather, a whole range of rocks geologically connected to granite are used. Most often, commercial feldspar is mined from pegmatite or feldspathic sand deposits. Aplite, which is a fine-grained igneous rock with the same mineralogical composition as granite, also is mined frequently for its feldspar content.   Basically, the two properties which make feldspars useful for downstream industries are their alkali and alumina content. On those elements we can distinguish three families: Feldspathic sand, Pegmatite and Feldspar. A further distinction can be made between sodium, potassium and mixed feldspars, depending on the type of alkali they contain. Feldspars play an important role as fluxing agents in ceramics and glass applications, and also are used as functional fillers in the paint, plastic, rubber and adhesive industries.   Glass: Feldspar is an important ingredient in the manufacture of glass and an important raw material as well, because it acts as a fluxing agent, reducing the melting temperature of quartz and helping to control the viscosity of glass. The alkali content in feldspar acts as flux, lowering the glass batch melting temperature and thus reducing production costs.   Ceramics: In the manufacture of ceramics, feldspar is the second most important ingredient after clay. Feldspar does not have a strict melting point, since it melts gradually over a range of temperatures. This greatly facilitates the melting of quartz and clays and, through appropriate mixing, allows modulations of this important step of ceramic making. Feldspars are used as fluxing agents to form a glassy phase at low temperatures and as a source of alkalies and alumina in glazes. They improve the strength, toughness, and durability of the ceramic body, and cement the crystalline phase of other ingredients, softening, melting and wetting other batch constituents.   Fillers: Feldspars also are used as fillers and extenders in applications such as paints, plastics and rubber. Beneficial properties of feldspars include good dispersability, high chemical inertness, stable pH, high resistance to abrasion, low viscosity at high filler loading, interesting refractive index and resistance to frosting. The products used in such applications are generally fine-milled grades.   Enamel frits and glazes: Feldspar assists the enamel composition, assuring the absence of defects and the neatness of the end product: e.g. enamel frits, ceramic glazes, ceramic tile glazes, sanitaryware, tableware, electrical porcelain and giftware.   And many other end-uses: paint, mild abrasives, urethane, welding electrodes (production of steel), latex foam, the welding of rod coating, and road aggregate.

Building Products Fiberglass Grout Cement/Concrete Glass Container Flat Glass Automotive Foundry Molding Round & Sub-Round Grains Custom Foundry Blends

Crystalline silica is a substance of concern for human health. Dust sized silica particles, invisible to the naked eye, are generated during a variety of activities and can be breathed into the body where they reach deep into the lungs. Once in the lungs, these particles can be coughed up, or pass from the lungs to other organs in the body through the blood stream, or stay stuck in the lungs. Breathing crystalline silica repeatedly over many years is a well-known cause of health problems. Silica is a "building block" material that forms rocks, soil, sand, and other parts of the earth. A large amount of the earth is made up of silica. Silica occurs in either a crystalline or an amorphous structure. Over many years, silica in the soil can form into crystalline silica due to natural heat and pressure. Crystalline silica is very commonly found throughout the Midwest, and is more toxic to human health than amorphous silica. Many industrial and commercial processes require crystalline silica. Some of the more notable uses for crystalline silica include glassmaking, road-building, molds for molten metals poured at foundries, hydraulic fracturing, or "fracking," for oil and gas production, water filtration, and even electronics. Crystalline silica can be released into the air from cutting, grinding, drilling, crushing, sanding, or breaking apart many different materials. Silica is a well-known occupational hazard and has also been recently examined for its environmental concentrations near silica sand mines and transport terminals.

Silica sand is the most common chemical form of the fine granular material, made up of small rocky particles and minerals, which we call sand.   Uses of silica sand The uses of silica sand are varied because silica is a fundamental component in the manufacture of artificial glass, ceramics and concrete.   Silica sand uses Below, we mention the main areas and construction activities in which silica sand is usually used: Buildings in general, forming part of mortars, formwork, granite, brick, slate, porcelain, plaster, concrete, ceramic, vitreous fibres, among others. Construction of public works, especially in tunnels, mainly encompassing the use of excavation machinery, pneumatic and electric tools, and concrete pouring. Manual and mechanical demolition of masonry and reinforced concrete structures. Non-slip flooring for industrial use, used in environments with a high risk of chemical spillage. Rehabilitation and maintenance of industrial warehouses, buildings in general and floors. Abrasive cleaning of concrete and other materials through pressurized ejection. Refurbishment work in railway facilities. Transport and unloading coarse and fine aggregates, concrete, among others

Hengyang designs and manufactures stationary and mobile crushing and screening equipment and installations for the recycling of inert materials such as glass, plastic, metal, ferrous scrap, cement, asphalt, urban waste from road sweeping, marble processing waste, construction demolition waste (debris). Construction and Demolition (C&D) waste generally derives from construction and demolition operations, including reclaimed soil from contaminated sites that, properly processed and managed, can give life to so-called recycled aggregate which, in most cases, can be reused as concrete aggregate, especially for road sub-bases, industrial structures, foundation layers (of transport infrastructures and of yards) and environmental recovery and filling operations (substrates, embankments). The sectors of use range from recycling to crushing, from shredding to the recovery and processing of inert materials. The process for the reuse of C&D waste is carried out by stationary or mobile plants. C&D Hengyang plants guarantee a quality final product in different stages of the manufacturing process.

Sand and Gravel, known as indispensable aggregates for the construction sector, must be crushed to obtain the optimal size in relation to their specific uses. We distinguish two categories: Primary inert materials Natural inert materials such as sand, gravel, pebbles and their mixtures, coming from quarries, deposits, rivers or lakes or deriving from the processing (crushing, screening and / or washing) of excavation material. This category also includes gravel produced with quarry waste (gneiss, marble, etc.). Excavated material Material resulting from excavation of the soil of construction works as well as from excavation of tunnels. This category includes loose stone as gravel, sand, silt and clay or their mixtures, broken rock, material from previous construction operations. Hengyang aggregates processing plants for the production of sand and gravel are designed to deliver custom equipment capable of adding the maximum value and meeting the needs of each specific site in terms of quantity and granulometry.

Mineral processing refers to the practice of processing ores and minerals in order to separate valuable minerals from waste materials. Generally, minerals are extracted and then recovered using several operations, including crushing, sizing, concentration and dewatering. The term “mineral processing” can be applied to a wide array of industries, such as gold, coal, nickel, aluminum, bauxite, oil sands, phosphate, potash, copper, iron ore and many others.   Why choose Hengyang? *precision in the mining process *reliable throughout the whole purchasing process *knowledge of minerals *advanced and targeted technique

Hengyang owns mobile and fixed units which can be integrated to treat cuttings, wastes and residues resulted from drilling operations, based on requirement and location. The water from the treatment process will be analyzed in the laboratory and the lab results report will be used to determine the optimum removal methods, based on the conditions existing on site, on the laws of the respective country and taking into account the cost optimization through the following: vaporization, injection into the well, discharge into available sewers or into natural emissaries. The solid fraction remaining in the sludge pit after fluid extraction and treatment, depending on the contaminant found by lab analyses, will be disposed in accordance with the local applicable law and with the best techniques available: screening, washing, solidification, stabilization, disposal, etc. At the end of the drilling fluids and sludge treatment operations, at the beneficiary`s request, the site can be restored to the natural circuit.

Hengyang Industry carries out all necessary steps for site rehabilitation. Soil remediation is a complex process which requires careful attention in investigation, expertise in identification of the optimal method, and correct application of the mechanical, physiochemical, thermal, or biological remediation procedures. Remediation can be done on-site or off-site and is adaptable to every type of contamination.   Remediation of soil contaminated by oil, chemicals, acid tars & mercury using methods like:   Soil washing Stabilization Solidification Bioremediation Ecological restoration   The selection process must consider many inputs and depends on several factors that are carefully analyzed by our experts. Selection process is especially important because for a given soil contamination scenario, there often is no single remediation technology that is the obvious choice. In general, several technologies may be applicable. The challenge is to choose the best applicable technology, the one that offers the required clean-up effectiveness at the lowest cost. Laboratory or field treatability studies of the most applicable technologies are often performed as part of the selection process. If multiple contaminants are present (e.g., metals and hydrocarbon), more than one remediation technology may be required. For example, while bioremediation or thermal desorption will remove hydrocarbon contamination, they do not impact metals. Soil washing does not do as well in removing hydrocarbon, but does remove metals. When clean-up units are run in series, this arrangement is referred to as a treatment train.   In most cases soil contamination occurs at manufacturing sites; that is mainly, refineries and petrochemical plants. At these sites, much of the impacted soil will be contaminated with aged heavy petroleum hydrocarbons and byproducts. Also occasionally soil contamination with lighter products (e.g., gasoline, diesel), is found in manufacturing sites.

Recently, a lot of wastes appear at the streets of Ottawa, the Capital of Canada, which appeal to the tidy Canadians and attract the attention of many visitors. What kind of “wastes” has such magic? How to solve the increasing waste generation? On one hand, we must follow the good habit to protect our living environment; on the other hand, we need to develop advanced waste treatment technologies and realize green recycling of various wastes. What is pyrolysis technology? “Pyrolysis technology is one of the leading technologies in the world of high molecular weight polymers, which can covert polymer wastes (end-of-life tires, waste plastics, oil sludge, biomass etc.) into liquid pyro oil with high added values in the industrial and continuous production process.”   Currently, pyrolysis technology represents an important direction of waste resource recycling. Compared with waste treatment technologies such as landfill and incineration, pyrolysis has the great advantages of large processing capacity, high efficiency and no secondary pollution, in compliance with the principles of massive reduction, harmless treatment and resourceful utilization. We cannot live in the planet full of wastes. Let’s join hands to properly treat the wastes and return the green environment.

Here you can learn more about waste recycling and biodiesel production with our equipment     Solid waste materials pyrolysis plants Household waste recycling Used tires recycling Medical waste recycling Oil sludge recycling Wood waste recycling Waste plastic recycling Electronic waste recycling Mazut recycling Peat recycling Brown coal recyling Hydrolysis lignin recycling Soil contaminated with oil recycling   Hengyang distillation column Pyrolysis oil processing Oil processing Processing of glycerol containing mixtures Processing of waste motor oil Processing of mixtures of alcohols and their aqueous solutions Processing of waste solvents   biodiesel plant Processing of vegetable fats: - processing of sunflower-seed oil - processing of rapeseed oil - processing of other vegetable fats Processing of seaweed oil Processing of waste deep-fat frying oils  

Equipment for production of biodiesel We manufacture BIODIESEL PLANTS for the production of biofuel in stream from any vegetable oil (including used ones) or animal fats on ANY set productivity. Biodiesel plant is intended for the production of biofuel from vegetable oils (sunflower-seed oil, rapeseed oil, corn oil, mustard oil, seaweed oil, etc.), cod-liver oil, animal fats. Do you have some questions? Do not hesitate! Write to us right now! Biodiesel fuel is made through a process called transesterfication. This process involves removing the glycerin from the vegetable oil or animal fat. During the process byproducts are left behind, including methyl esters and glycerin. To receive a necessary speed of the reaction, use the catalysts (NAOH, KOH). Biodiesel is free from such substances as sulphur and aromatics which are found in traditional fuels.

Oil sludge is loaded into a retort (a container of heat-resistant metal). The retort is located in the pyrolysis module. The pyrolysis module is lined with high-temperature thermal insulation on the basis of ceramic fiber and refractory concrete, so during operation the temperature of the outer wall of the module is safe for service personnel. Raw materials are not exposed to direct fire; heat transfer is carried out through the walls of the retort. The maximum operating temperatures are 450-520 °C. The retort cover is manufactured with a special design closure, which ensures complete sealing of the space within the retort and eliminates the possibility of smoke. The steam-gas mixture comes out from the retort through a pipeline, and then it is cooled in a condenser-fridge. The vapor condenses and the resulting liquid separates from non-condensable gases. The liquid accumulates in the liquid product collector. The gas is used to maintain the pyrolysis process - it is sent to the burner and then it burned in the furnace. Hengyang Industry Pil sludge Recycling plants are designed for flexible use: they have standard dimensions for transportation by any means of transport, flanged connections throughout the structure (due to it the installation-dismantling process takes a minimum amount of time) and a stand for transportation. Result 1: oil sludge recycling business Our company offers you to start your own oil sludge recycling business. The bulk of the oil contaminated wastes are located in the slag storage of oil barns, which contain a wide range of contaminants in the mineral and organic environment. As the result, enterprises are looking for ecological and legal ways of oil sludge disposal. And it is you who can offer them your service. In addition, the advantage of the plants is that they can also recycle your own household waste.   Result 2: obtaining commercial products Besides the developing of your own business, you can also get such commercial products as: Black carbon – 40% It can be used as solid fuel, sorbent in disposal facilities, in manufacture of tires, hoses and cables. Liquid heating oil – 35-45% It can be used as boiler fuel. Then it is recycled in refinery for obtaining oil fractions, such as petrol, diesel fractions and fuel oil. Gas – 10-12% It is used to maintain the pyrolysis process inside the furnace and for space heating. Metal cord – 8-10% It can be melted down. Heat Thermal energy is accumulated in exhaust-heat boilers for water heating and central heating.   Result 3: environment protection Today environmentally friendly way of waste recycling has become a reality, and we are happy to share with you a new development of oil sludge recycling. Our equipment makes it possible to eliminate oil sludge lakes and barns, to clean oil contaminated soil, to recycle drilling waste in any place of oil production and recycling. Modern pyrolysis equipment is in demand at oil and gas fields, enterprises, solid waste landfills and waste sorting stations. The equipment has no negative impact on the environment, and there are practically no emissions to the atmosphere.

Rubber and composite mill lining systems In the past, grinding mills were typically lined with cast metal linings of varying steel or iron alloys, and lining system selection was typically driven by level of wear protection and cost. As materials technology and design technique has advanced, today many superior alternatives exist to metal linings.   Rubber compounds have been developed to protect mill shells from wear, while new cast alloys and wear resistant plates can be bonded into rubber to withstand high impact abrasiveness. There is a greater understanding of how mill lining systems influence mill performance. Operators now select mill lining systems on more criteria including ability to deliver mill process performance, wear resistance, ease of installation and safety. Furthermore, return on investment and total cost of ownership models are important factors in the decision making process, rather than cost alone.

Recycled Materials Usages Local examples Aggregate Sub-base material for road construction,hardcore for foundation works, base/fill for drainage,aggregate for concrete manufacture and general bulk fill Pilot studies carried out by works departments Asphalt Aggregate fill and sub-base fill Under investigation by Highways Department Excavated materials Filling materials Housing Department's building projects Public fill Land reclamation Land formation at Public Filling Areas Pulverized fuel ash Manufacture of concrete products, uses in fill and reclamation, highway construction and reinforced soil structures Construction of Chek Lap Kok Airport, use in structural concrete for foundation works in the Housing Department's building projects Metals Manufacture of new metals Widely practised in local construction industry Glass Manufacture of eco-pavers, eco-partition blocks and glassphalt, substitute for sand and aggregates as mortar, backfilling and reclamation materials Use of eco-pavers by Works Departments for road paving. Studies and trial uses are being carried out by Works Departments for other applications Plastic Synthetic materials in form of plastic lumber for landscaping, horticulture and hydraulic engineering Use at some public recreational facilities as garden furniture Rubber Manufacture of rubber slate tile use in roofing and sport / playground surface mat Use at some public recreational facilities as playground surface mat Expanded polystyrene Manufacture of lightweight concrete for non-structural works Use in manufacturing lightweight concrete in Housing Department's building projects

Recovery and manufacture of valuable products from mixed demolition waste According to Environment Agency’s report, million tonnes of demolition scrap were created every year, where this figure represented the total of demolition waste, construction waste and broken road surface materials. Owing to increasing landfill costs and the requirements on sedimentation ability together with a high demand for high-quality secondary raw materials, alternative recovery or disposal methods to conventional landfill are of growing interest to businesses. But sorting and recycling use of construction waste, better for whole world.   The recyclable elements of construction waste or demolition waste such as inert materials, metals, wood, paper and plastics . Those materials can be recovered using the conventional magnet technology plus sensor-based sorting systems from Hengyang Industry (Tel: +8615617816797). Larger amount of construction waste will crushing and separating as aggregates or re-make into bricks, widely use for construction.   Inert mineral material such as brick or concrete can be sorted very effectively using the Hengyang combination sorting system in order to reduce your disposal volume or to increase your product yield from brick or recycled concrete (RC concrete). Using a variety of sensors, the machine uses the metal, color and shape properties of the material and links these in order to separate, for example, red brick from grey concrete. The brick is then typically pre-crushed, sieved and sorted in the size range 30 – 90 mm automatically with the sensor machine, achieving qualities of >95%. Next the material is further broken to create the correct size for the secondary raw materials purchaser.   Hengyang Industry will provide you full solution of construction waste or demolition waste Solution: • Crushing plant, mobile crushing and separating system • Sorting of Fe metal, non-Fe metals, wood/card/paper, plastics, brick, concrete • Valuable residues/secondary raw materials and contaminants • Landfill/landfill

China possesses rich copper ores. There are sixty two million four hundred and thirty-three thousand tons.   Copper ore dressing equipments include: jaw crusher, vibrating screen (optional), ball mill, spiral grading machine, magnetic separator, floatation machine, concentrated barrel and dryer.   Copper ore dressing processes can be divided into three parts: 1, crushing part: basic procedures for crushing iron ore. The purpose is to crush the raw ore into appropriate size which is suitable for grinding. 2, grinding part: to grind crushed part, further process the ore to get smaller size, in order to match up with floatation separation materials. 3, floatation part: the floatation procedure is an important process for upgrading copper ore. Chemical reagent is added into mixer.   The ores will be processed for primary crushing by jaw crusher, it will be delivered into ball mill by elevator and vibrating feeder after it is crushed into reasonable size, the ball mill will crush and grind the ores.   The fine material grinded by the ball mill will go into the next process: grading. By virtue of the principle that the difference of specific gravity of solid particle would lead to difference of precipitation speed in liquid, the spiral grading machine will clean and grade the ore mixture. When the ore mixture after washing and grading go through magnetic separator, magnetic substance is extracted from the mixture by magnetic force and machinery force due to difference of specific susceptibility of varied ores, the ore particles after separated by magnetic separator will be delivered into floatation machine, the different medicines will be added according to different ore properties, which will make the acquired ore be separated from other substances.   The acquired ore substances after being separated must be concentrated by thickener due to large content of waste, and then be dried; the dry ore will be acquired. Grade of copper flavor powder reaches 45%.

Lead zinc ore has a rich content of metallic element lead and zinc. Lead zinc ore has a wide application in electric industry, machinery industry, military industry, metallurgy industry, chemical industry, light industry and medical industry. Besides, lead metal has multiple purposes in oil industry. Lead is one of the metals extracted from lead zinc ore. It is one of the most soft heavy metal, and also with big specific gravity, blue-grey, hardness is 1.5, specific gravity is 11.34, melting point is 327.4℃, boiling point is 1750℃, with excellent malleability, it is easy to be made into alloy with other metal (such as zinc, tin, antimony, arsenic, etc). Complete set of equipment for lead-zinc ore dressing include: jaw crusher, hammer crusher, impact crusher, vertical shaft impact crusher, high efficient cone bearing ball mill, vibrating feeder, auto spiral grading machine, high efficient energy conservation floatation machine, mining agitation tank, vibrating feeder, thickener, mining elevator, mining conveyor machine, spiral chute, ore washer, etc. Generally, there are three kinds of technological process for lead zinc ore dressing: 1, crushing, grinding, grading, floatation; 2, crushing, grinding, re-selection; 3, crushing, screening, roasting.

What is the Primary Crusher? It was formerly the custom to consider one set of product gradation, or screen analysis, curves as being suitable to represent the products of both primary (unscreened) and secondary (screened) feeds... What does sand making plant include? Sand making plant usually includes vibrating feeder, jaw crusher,impact crusher or cone crusher, vibrating screen, sand making machine, sand washer and sand collecting equipment. Composition and structure of Construction Waste Crusher The track-mounted mobile crushing plant made by Zhenghou Hengyany Industry Co., Ltd is a wholly new kind of high efficient crushing equipment in China, which has reached advanced world levels. What is the advantage of mobile crushing plant The track-mounted mobile crushing plant is a mobile crushing and screening equipment totally hydraulic and crawls with pedrail and classis. Application of track-mounted mobile crushing plants Sanme Track-mounted mobile crushing plants features high performance, high reliability, elegant design and top international techniques. Track-mounted mobile crusher features and benefits Sanme track-mounted mobile crushing plant main features and benefits The factors can enhance crusher capacity The capacity charts is a reference for properly using VSI cone crusher and getting to its capacity. How to approach commonly used in mineral processing Flotation separation process is to separate minerals by the variety of surface chemical and physical properties.

Hengyang Industry can help you to convert unwanted poultry litter to create heat and electricity to manage your business more efficiently and generate income through the Renewable Heat Incentive (RHI) and by exporting excess electricity to the grid. Innovative and efficient Biomass CHP System Poultry manure is a fuel, not a waste Heating chicken sheds and site buildings Off-set site electrical loads Future proof of electricity and heating costs RHI Income from qualifying heat Off-set fuel consumption costs (gas, oil, LPG or woody biomass) Reduction in odours Avoidance of spreading poultry manure on land Enhanced bird health, better ventilation, dryer air and improved biosecurity Less humidity in poultry shed (replacing LPG) Reduced potential for watercourse pollution Fewer vehicle movements on and off-site Reduced carbon footprint and Green House Gas emissions By-product (ash) as a fertiliser Fully automated operation     Poultry manure is an abundant fuel that can be combusted in an IED compliant system. Typically, the litter is removed from the chicken sheds at the end of each growing cycle.   The manure is delivered to the fuel store where a feed system transports the manure under negative pressure to a conveyor for delivery to the combustor auger feed system. The auger moves the manure (fuel) into the primary combustion chamber for the complete combustion the process to begin. The combustion gas at around 900°c is diluted through a series of filters delivering 530°c gas to the Organic.   The heat extracted from the filtered combustion gas converts the ORC working fluid from a liquid to a gas, this change in state spins a turbine which is linked to an electrical generator. The working fluid is then cooled and the resulting heat can be used in a downstream heating process such as poultry sheds, dryer, offices and homes.   The working fluid is then pumped back to the heat source and the cycle repeats.

Hengyang use remote monitoring and fleet management system that combines your machines' inbuilt control system with computers positioning and telematics software. From the fleet management fundamentals of knowing the hours and location of your machine to sending machine specific alerts and tracking machine production, Hengyang can help you remotely monitor and manage your Hengyang |Finlay fleet and grow your business. We help you connect with and keep track of your equipment, monitor work progress, manage logistics, access critical machine information, analyse and optimise machine performance and perform remote operator support. Every one of our new build crushers, waste handling machine and screeners is covered with an industry leading 7-Year Data Subscription as standard. You can also pass it on: sell your machine within the subscription period and it can be transferred to the new owner enabling them to benefit from the system during the remaining time.

Solid waste management refers to the process of sorting and turning solid waste into valuable resources. Since the urban area increases rapidly, the amount of solid waste has jumped. And the sources of solid waste is diversified. Therefore, finding an effect way to handle these waste has become a pressing problem. Collection and classification are the best way to improve the utilization of these waste. If we recycle these garbage by manual, such as small-scale recycling station, a large of time and money will be wasted. Currently, Hengyang Industry provides waste recycling machine for customers. This machine is able to sort the waste into various types. According to customers’ specific requirements, we can customize the configuration of garbage sorting plant. Thus, it is available for you to make full advantage of materials which you wanna recycle.