1.Low thermal conductivity
2.High mechanical strength
3.High hardness, high RUL
4.Excellent in abrasion resistance, and oxidation resistance
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Liuzhai Town, Xinmi City, Henan, China, 452370
Description of Corundum Brick
Corundum brick is a kind of aluminum silicate refractory products with corundum to be main crystal phase. Corundum bricks have excellent high temperature mechanical behavior which also can stand corrosion and abrasion. The brick, contains more than 90% Al2O3, has the compressive strength (under normal temperature) up to 340MPa. Its refractoriness under load can reach more than 1700℃.
Corundum bricks are widely applied in extremely high temperature environment, such as pyrolyzer or reformer in petrochemical industry and chemical fertilizer industry, or all kinds of high temperature furnace lining and kiln furniture in metallurgical industry.
Technical Dates of Corundum Brick
Items | High Purity Corundum Brick | Sintered Corundum Brick | Electro-Melting Corundum Brick | Fused Cast Corundum Brick |
Al2O3 (%)≥ | 99 | 98.5 | 98 | 93 |
SiO2 (%)≤ | 0.3 | 0.5 | 0.5 | 2.5 |
Fe2O3 (%)≤ | 0.2 | 0.5 | 0.7 | 0.5 |
RO (%)≤ | 0.3 | 0.2 | 0.6 | 4 |
Bulk Density (%)≥ | 3 | 2.95 | 2.95 | 3.54 |
Refractoriness | 1790 | 1790 | 1790 | 1790 |
RUL℃（0.2Mpa）≥ | 1700 | 1700 | 1700 | 1650 |
Linear Change On Reheating(%)1600*3h | 0.2 | 0.5 | 0.2 | 0.3 |
Compressive Strength (Mpa) | 75 | ≥80 | ≥60 | 200 |
Thermal Stability(times)1100℃ Water Cooler | 6 | 10 | 10 | 10 |
