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Product introduction of high alumina brick
High alumina brick usually refers to the refractory brick with the Al2O3 content of more than 48%. It is mainly a kind of refractory brick made from natural high-grade bauxite clinker, adding soft or semi soft clay as the binder to prepare mud, and then shaping, drying and firing.
Features of high alumina brick
Anti dross
High temperature resistance
Resistance to chemical attack
Thermal stability
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 |