Description

Name:Aluminum silicate;

Category: Aluminosilicate Minerals;

Density:3.*6g/cm3;

Moth hardness:**7;

Color: colorless, if containing impurities the color is rose or blue;

Shape: a trapezoid system, columnar or needle like crystal;

Refractoriness:it is still very stable at ***0°C; when ***0°C,it will decompose into corundum and liquid phase;

Characteristics: uniform expansion, excellent thermal shock stability, high load softening point, low temperature creep value, large hardness, good chemical corrosion resistance and so on;

Synthetic mullite classification:

1. Classified according to synthetic methods: sintered mullite and electrofusion mullite;

2. Classified according to the chemical compositions of the raw materials:low aluminum mullite, medium aluminum mullite, high aluminum mullite, and zirconium mullite, etc;

3. Classified according to the raw material:calcined kaolin (low aluminum) mullite, calcined kyanite (medium aluminum) mullite, fuel (high aluminum) mullite, high purity mullite.

Application:

1. Refractories:raw materials;

2. Glass kiln lining brick, mullite bricks,hot blast furnace brick for large smelting blast furnace, silicon low creep brick for blast furnace,ceramic kiln, sagger, ceiling panels, petroleum chemical,etc:additive refractory materials, raw materials, etc;

3. Sanitary ware body, precision casting:raw material;

4. Optical materials:raw materials: good infrared and infrared ability;

5. Electrical materials (raw materials: reduce room resistivity, expand the absorbing frequency band of absorbing materials, improve the efficiency of absorbing materials, and reduce the reflection of electromagnetic waves at the interface between air and absorbing layer);

6. Mullite composite material (raw material: high strength, high wear resistance and strong anti erosion performance, favorable dispersion force, the crack is less, the quality of the material is improved performance, can be used in the kiln, low creep brick, masonry in blast furnace, and the burning resistance board).