ISO9001 Silica Sand Processing Plant Equipment

WHAT IS SILICA SAND USED FOR?
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.
How is silica sand processed?
The production process for silica sand consists of crushing, grinding, sizing, beneficiation, dewatering and drying. Hengyang can supply complete flowsheets using its own equipment and that of partners. Our planet positive portfolio helps reduce energy consumption and emissions, improve water efficiency, supports circularity and is designed to offer market leading safe operation.
Silica sand crushing and sizing process
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 offers the following products for crushing and sizing silica sand

Feeders
Jaw crushers
Cone crushers
Multi-deck screens
Single deck screens

Silica sand grinding process
The second stage of the production process is to further reduce the particle size so it is ready for the beneficiation stage where impurities are removed. Particles are first fed through a grinding stage which can use any combination of an HPGR, ball mill or rod mill. The particles are then fed through a desliming hydrocyclone and a screen before being fed either back in to the grinding stage or towards the beneficiation stage.

Hengyang offers the following products for this process stage:

High Pressure Grinding Rolls – HPGR
Ball/Rod Mills
Hydrocyclones
Single deck screens
Slurry pumps

Silica sand beneficiation process
The third stage of the production process is to separate impurities such as mica, feldspar, oxides and heavy minerals. This is achieved by passing the material to be processed through multiple stages of flotation cells and separation.

Hengyang offers the following products for this process stage:

Flotation cells - we can provide Metso cells as well as partner cells to provide the optimum solution for your process
Hydrocyclones
Humphreys spiral – We work with partners to deliver this element
Low Intensity Magnetic Separators
High Gradient Magnetic Separators
Slurry pumps

Silica sand dewatering and drying
The fourth stage of the production process is to remove fluids from the silica sand. This can be done using a combination of hydrocyclones, filters, inclined plate settlers and spiral dewaterers with the exact choice dependent on the process. This is then followed by a final drying stage.

Hengyang offers the following products for this process stage:

Hydrocyclones
pressure filter
vacuum belt filters
Spiral Dewaterers - we work with partners to provide this component.
Rotary Dryers