Corundum Brick
Corundum bricks, as a high-quality refractory material, are mainly made of corundum. They have remarkable characteristics, including excellent high-temperature resistance, capable of withstanding extreme temperatures while maintaining structural integrity and stable performance; high hardness provides outstanding wear resistance against solid particles, molten substances, and high-speed airflow; additionally, they possess good chemical stability, able to resist various chemical corrosions in different media and are not easily degraded.
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Aluminum
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| Item | High purity corundum brick | Sintered corundum brick | |
| Al2O3 % | ≥99 | ≥95 | ≥90 |
| SiO2 % | ≤0.3 | ≤4 | ≤9 |
| Fe2O3 % | ≤0.15 | ≤0.4 | ≤0.5 |
| Bulk density g/cm³ 3 Bulk density | ≤3.2 | 3.1 | 3.0 |
| Cold compression strength MPa | ≥100 | ≥100 | ≥100 |
| Load softening start temperature ℃ (0.2MPa,0.6%) Refractoriness under load |
≥1700 | ≥1700 | ≥1700 |
| Reheating linear change rate % (1600℃×3h) Reheating linear change |
±0.2 | ±0.2 | ±0.3 |
Performance: Corundum brick, as a high-quality refractory material, is mainly made of corundum. It has remarkable characteristics, with excellent high-temperature resistance, able to withstand extreme high temperatures while maintaining structural integrity and stable performance; its high hardness provides excellent wear resistance against solid particles, molten substances, and high-speed airflow; meanwhile, it also has good chemical stability, resisting various chemical substances in different media and is not easily degraded.
Application: Corundum bricks have wide applications in many fields. In the metallurgical industry, they are extensively used in steelmaking furnaces and blast furnaces to protect furnace linings and extend equipment service life; in the building materials industry, they are ideal for glass kilns and cement kilns, capable of withstanding high temperatures and corrosive environments, ensuring product quality and production efficiency; in the power generation industry, especially under high-temperature and high-pressure boiler conditions, they are used to construct furnace walls and other components, helping to improve boiler thermal efficiency and ensure stable operation of power generation equipment.
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