Brief Introduction Of High Alumina Brick
High alumina brick is a kind of alumina-silicate refractory material with content of alumina oxide more than 48%. It is calcined and formed by the raw material of banxite or the material with high content of AL2O3. High thermal stability, the refractoriness is more than 1770℃.
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Technical Datas Of High Alumina Brick
| High Alumina Refractory Brick Physical and Chemical Index: | ||||||
| Item | Properties | |||||
| RS-80 | RS-75 | RS-65 | RS-55 | RS-48 | ||
| Al2O3 (%) | 80 | ≥75 | ≥65 | ≥55 | ≥48 | |
| Refractoriness (°C ) | ≥1790 | ≥1790 | ≥1790 | ≥1770 | ≥1750 | |
| Bulk density (g/cm3) | 2.65 | 2.5 | 2.45 | 2.4 | 2.3 | |
| Softening temperature under load (°C ) | 1530 | ≥1520 | ≥1500 | ≥1470 | ≥1420 | |
| Reheating Linear changes Rate (%) | 1500°CX2H | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| 1450°CX2H | -0.4 | -0.4 | -0.4 | -0.4 | -0.4 | |
| Apparent porosity (%) | 22 | ≤23 | ≤23 | ≤22 | ≤22 | |
| Cold crushing strength (Mpa) | 55 | ≥50 | ≥45 | ≥40 | ≥35 | |
| Application | steel furnace, glass furnace, sodium silicate furnace, ceramic shuttle kiln, cement rotary kiln, blast furnace, electric furnace, blast furnace and reverberatory furnace. | |||||
Application Of High Alumina Brick
High alumina brick is widely used for blast furnaces, hot blast stove,steel ladle lining, reheating furnace, cement kiln, tunnel kiln,boiler, coke oven, carbon furnace, glass kiln , steel smelting furnace and various kiln lining and thermotechnical equipment, etc.
