Lightweight Concretes Rotary Kiln And Expanded Vermiculite Excellent Fire Resistance

Lightweight Concretes

Loosefill vermiculite can be used between joists in lofts for home insulation. The free flowing properties of exfoliated vermiculite make installation very simple. The insulating properties of vermiculite significantly reduce the loss of heat in cold weather and keep the interior cool in hot weather. It also functions as a sound absorbent material.

Other novel insulation uses include incubation of reptile eggs.

Packing Materials

Exfoliated vermiculite is a useful packaging medium. Not only is it lightweight, clean and easily poured around irregular shaped objects, it also provides a good baffle against shocks caused by impact and improper handling. Being highly absorbent, it safely retains leaks from packed materials such as hazardous chemicals. As it is inorganic it does not present any potential fire hazards making it suitable for use in air freight.

Exfoliated vermiculite can also be used as a packing material for storing fruit, bulbs and tubers. Vermiculite degrades naturally, so is easily disposed of. Being soft and non-abrasive it has also been used effectively for insulation and cushioning the base of plastic-lined swimming pools.

Processed Vermiculite

Vermiculite may be milled before or after exfoilation according to the range of particle sizes required. Such milled or ground material may be used for the production of anti-drumming coatings, condensation control paints, high performance gaskets and seals and for upgrading the fire resistance of organic foams and other polymer based systems. Exfoliated vermiculite can be coloured to suit its end use (eg. retail display).

Refractory Products

Vermiculite for refractory and high temperature insulation is normally bonded with alumina cements, fire clays and silicates to produce a wide range of vermiculite products which, depending on type and application can withstand hot face temperatures of up to 1100°C.

The type of refractory products made using vermiculite are:-

pre-fired clay bonded insulation firebricks;

castable high alumina concretes for back up insulation;

high alumina bonded bricks, slabs and special shapes;

silicate bonded insulating shapes and moulded products.

Silicate Bonded Shapes And Blocks

Pressed vermiculite block insulation can be used in high temperature kilns, furnaces, combustion plants, boilers, wood burning stoves and night storage heaters. It is becoming more widely accepted as an alternative for asbestos or man-made mineral fibre insulation. The units can vary from simple blocks to very intricate shapes designed to accommodate electrical elements, fixing screws, etc.

Vermiculite Plasters

Vermiculite plasters can be made with either gypsum or Portland cement. The advantage which all types of vermiculite plasters give over conventional are:

improved coverage;

lighter weight;

improved workability;

excellent fire resistance;

reduced thermal conductivity;

improved adhesion to a wide range of backgrounds;

increased resistance to cracking and shrinkage.

Vermiculite also improves the spall resistance of plasters due to the ability of vermiculite particles to accommodate dimensional change.

Vermiculite plasters, whether gypsum or cement based, can be applied by hand or by spraying machine. Being a non-abrasive aggregate, vermiculite is well suited to spray application and the sprayed plasters can have an attractive decorative appearance.

Crushing and Sorting from Mineral Ores:

	Vibrating Separator and Feeder Capacity: 5-200t/h
	Jaw Crusher Crushing coarse materials into small sizes. Capacity: 0.5-200t/h
	Vertical Sand Crusher Crushing materials into sand, better for future separating. Capacity: 2-180t/h
	Rotary Screen Separating material into different sizes. Capacity: 5-400t/h
	Rod Mill Grinding Material into powder Capacity: 1-60t/h
	Dust collector Recycling and Dust cleaning Capacity: match with the plant
	Rotary Kiln Exfoliation in higher temperature. Capacity: 0.9-70t/h
	Rotary Dryer Dewatering material Capacity: 1-120t/h
	Rotary Cooler Cooling material from higher temperature to normal. Capacity: 1-150t/h