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Product introduction of high alumina fire bricks
High aluminum brick is a kind of refractory material, the main component of this refractory brick is Al2O3.
High alumina brick is a neutral refractory containing more than 48% alumina. It is made of bauxite or other raw materials with higher alumina content by molding and calcination. High thermal stability, refractories above 1770℃. Good slag resistance, used in the lining of steel furnace, glass furnace, cement converter, etc.
Application of high alumina fire bricks
The characteristics of high alumina brick are mainly reflected in high temperature resistance, chemical internal erosion resistance, thermal shock resistance and so on. High-quality performance is widely used in various industries such as cement, glass building materials industry, iron and steel smelting industry, petrochemical industry, etc.
More relevant refractory products: Ceramic fiber paper
Parameters of high alumina fire 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 |
Also, we have SK30, SK32, SK34, SK35 refractory clay bricks to choose. Their aluminum content is lower than high alumina bricks, and the use temperature is lower, but the price is cheaper. If your kiln is not demanding, you can also choose refractory clay bricks.