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Product description of corundum mullite brick
Corundum mullite brick is a high alumina refractory consisting of the main crystal phases of corundum and mullite. Mullite corundum bricks are refractory products made of high purity or purer raw materials. Among them, the existence of low melting point oxide impurities will reduce its high temperature performance.
Features of corundum mullite brick
High temperature creep resistance
Better high temperature resistance
Resistance to thermal shock and erosion
Applications of corundum mullite brick
Corundum mullite bricks are mainly used in petrochemical industry, large and medium-sized synthetic ammonia gasifiers, magnetic materials for gas furnace materials, high-temperature hot blast furnaces, glass smelting furnaces, ceramic baking furnaces, etc.
Parameters of corundum mullite brick
| Item/Index | Mullite Bricks | Resintering Fused Mullite Bricks | Mullite-Corundum Bricks | Corundum-Mullite Bricks |
| Al2O3 | ≥70% | ≥75% | ≥80% | ≥90% |
| SiO2 | ≤25% | ≤23% | ≤18% | ≤8% |
| Fe2O3 | ≤0.5% | ≤0.5% | ≤0.5% | ≤0.3% |
| Apparent Porosity | ≤17% | ≤14% | ≤19% | ≤18% |
| Bulk Density | ≥2.55g/cm | ≥2.65g/cm | ≥2.70g/cm | ≥2.90g/cm |
| Cold Crushing Strength | ≥90MPa | ≥100MPa | ≥80MPa | ≥100MPa |
| Initial Refractoriness Under Load | ≥1630℃ | ≥1700℃ | ≥1650℃ | ≥1700℃ |