Corundum Brick
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The corundum brick with more than 90% alumina is a refractory material taking corundum as its main crystal phase. The corundum brick features excellent chemical stability, satisfactory resistance to acid or alkali slag, metal and vitreous humor, mainly suitable for iron making blast furnace and blast-furnace hot blast stove, steel-making secondary refining furnace, glass melting furnace, petrochemical furnace, etc.
Technical Indicators of Corundum Brick
| Product number | ||||||
| Properties | ||||||
| Refractoriness (℃) | 1850 | 1850 | 1800 | 1750 | 1700 | 1650 |
| Al2O3 (% )≥ | 99 | 98 | 97 | 95 | 93 | 90 |
| Fe2O3 (% ) ≤ | 0.15 | 0.2 | 0.3 | 0.4 | 0.5 | 0.8 |
| Bulk density (g/cm3) | 3.15 | 3.15 | 3.1 | 3 | 2.95 | 2.9 |
| Apparentporosity (%) ≤ | 20 | 20 | 20 | 20 | 20 | 20 |
| Cold crushing strength (Mpa) ≥ | 90 | 90 | 80 | 80 | 80 | 80 |
| Refractoriness under load 0.2 Mpa (℃ ) ≥ | 1800 | 1800 | 1750 | 1700 | 1700 | 1600 |
| Reheating linear change (%) | ±0.1 (1700℃*2h) | ±0.15 (1700℃*2h) | ±0.2 (1700℃*2h) | ±0.2 (1650℃*2h) | ±0.3 (1650℃*2h) | ±0.3 (1600℃*2h) |
Related Names
Refractory Product | Refractory Brick | High-Temperature Material
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