Andalusite
Andalusite mineral is a new kind of high-alumina refractory material. It has the characteristics of high-temperature resistance, heat resistance, chemical corrosion resistance, high-impact resistance and high thermal mechanical strength. It has a wide range of application and high economic value. Andalusite mineral is mainly used in steel, ceramics, cement, glass and other industries. 
2. Size and Specification of Andalusite Mineral:
| Grade | Al2O3 | SiO2 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | Size |
| 55% | 55.0 | 42.5 | 1.20 | 0.30 | 0.50 | 0-1mm,1-3mm,200mesh | |||
| 56% | 56.0 | 41.5 | 1.20 | 0.30 | 0.50 | 0-1mm,1-3mm,3-5mm,200mesh | |||
| 57% | 57.6 | 40.3 | 0.80 | 0.25 | 0.10 | 0.15 | 0.10 | 0.20 | 0-1mm,1-3mm,3-5mm,200mesh |
| 58% | 58.3 | 38.5 | 0.80 | 0.15 | 0.20 | 0.10 | 0.10 | 0.35 | 0-1mm,1-3mm, 200mesh |
Product features of refractory grade andalusite mineral:
1.Control expansion
2.No shrinkage
3.High thermal shock resistance
4.High mechanical strength
5.Andalusite transforms into mullite at low temperature, between 1200 and 1550 ℃
Application of Andalusite Mineral:
Andalusite is mainly used in Steel, ceramics, cement, glass and other industries. The main application is as follows: ceramic kiln furniture, fixed refractory bricks, refractory castables products
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