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Brief description of high alumina brick
High alumina brick is an aluminosilicate based refractory with alumina content of more than 48%. It is calcined from raw bauxite or materials with high Al2O3 content, which is thermally stable and has a refractoriness of more than 1770 ° C. It has good anti scouring ability.
Features of high alumina brick
- High temperature resistance.
- Resistance to chemical attack.
- Thermal stability.
- Slag resistance.
Applications of high alumina brick
High alumina bricks are characterized by high temperature resistance, internal chemical corrosion resistance, good thermal shock resistance, etc. High performance bricks are widely used in cement, glass building materials, steel smelting, petrochemical and other industries.
More relevant refractory products: Ceramic fiber paper
Parameters of high alumina brick
| Item/Grade | SK-36 | SK-37 | SK-38 | SK-40 |
| AL2O3% (≥) | 55 | 65 | 70 | 82 |
| Fe2O3% (≤) | 2 | 2 | 2 | 2 |
| Refractoriness(SK) | 36 | 37 | 38 | 40 |
| Refractoriness underload, 0.2MPa, °C (≥) | 1450 | 1480 | 1530 | 1600 |
| Apparent porosity (%) | 20-23 | 20-23 | 20-22 | 18-20 |
| Bulk density (g/cm³) | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
| Cold crushing strength ,MPa (≥) | 45 | 50 | 60 | 70 |
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