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Product introduction of corundum mullite brick
Corundum mullite brick adopts pure mullite raw materials synthesized from industrial aluminum oxide powder and pure clay, bauxite or silica, especially the alkali metal oxide content should be as low as possible.
Features of corundum mullite brick
- High temperature creep resistance
- Good high temperature strength
- Thermal shock resistance and corrosion resistance
Applications of corundum mullite brick
Corundum mullite bricks are mainly used in petrochemical industry, large and medium-sized synthetic ammonia gasifiers, materials for magnetic material gas furnaces, high-temperature hot air furnaces, glass furnaces and ceramic firing kilns.
For more refractory materials welcome to consult: Ceramic fiber board
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℃ |