Sillimanite Brick
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sillimanite-brick-31

Sillimanite Brick

Sillimanite brick is refractory brick with good characteristics, which are prepared from sillimanite minerals by high temperature firing method or slurry casting method.
MOQ:5 tons

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Product Introduction

Description

Sillimanite is converted into mullite and free silica after high temperature calcination. Sillimanite is a natural high-grade refractory mineral, which has the characteristics of low thermal expansion rate, resistance to corrosion from metallurgical slag and various glass liquids, and good high temperature wear resistance. The physical and chemical properties of Sillimanite brick is better than those of high-alumina bricks, with a refractoriness of 1770-1830 °C, and a load softening starting point of 1500-1650 °C. It is mainly used for the molding of liquid hole in glass pool kiln, blast furnace lining, furnace throat and ceramic industrial kiln furniture. The refractory materials based on natural sillimanite also have these advantages.

Features

Sillimanite brick has some features, such as low thermal expansion, with high resistance to molten glass corrosion and to thermal shocks and so on.

Application

Sillimanite brick is mainly used as cover bricks, channels, spouts, plungers, orifice rings and feeder blocks.

Physical And Chemical Indicators

Index		SLLB-60		SLLB-65
Index		Pressing	Slip Casting	Pressing	Slip Casting
Chemical composition	Al2O3 (%)	60	62	65	70
	SiO2 (%)	38	36	33	28
	Fe2O3 (%)	0.5	0.5	0.5	0.5
Physical Properties	Apparent Porosity (%)	17	22	17	22
	Bulk Density (g/cm3)	2.40	2.35	2.50	2.45
	Cold Crushing Strength (Mpa)	70	60	70	60
	Refractoriness Under Load (℃)	1600	1580	1650	1630

Productive Process

1.Raw material quality control including physical and chemical testing.
2.Crushing and grinding of bulk raw materials.
3. According to customer data sheet required to mixing Raw Material.
Pressing or shaping the green brick depend on different raw material and brick shape.
4.Dry the bricks at dryer kiln.
5.Put the bricks into the tunnel kiln to burning by higher temp from 1300-1800 deg.
6.The quality control department will inspect the finished refractory bricks random.

product-750-487

Packing And Shipping

Packaging  according to safety sea-exporting packing Standard
Dispatch : loading the finished packing material at factory by container Door toDoor
By sea fumigated wooden pallet + plastic belt  + plastic film wrap.

product-750-591

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