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1.Product introduction of high alumina refractory bricks:
High alumina brick is a kind of aluminosilicate refractory with alumina content more than 48%. It is calcined from bauxite raw materials or high Al2O3 materials, with high thermal stability and refractoriness above 1770 ℃. It has good slag resistance.
2. Features of high alumina refractory bricks:
High compressive strength, high load softening temperature and strong thermal shock resistance. In addition to ordinary high alumina bricks, high alumina bricks for cement kilns have other requirements, including wear resistance, alkali resistance, high temperature resistance, etc.
3.Parameters of high alumina refractory bricks:
| 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 |
