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1.Product introduction of Alumina corundum mullite bricks
Mullite brick is a kind of high quality aluminum refractory products, alumina content of about 65% ~ 75%. Mullite brick is mullite as the main raw material, through high temperature burning, high pressure molding. Mullite bricks have the advantages of high temperature resistance, chemical and mechanical corrosion resistance and thermal shock resistance in kiln applications.
Longer service life, reliable quality.
2.Advantages of Alumina corundum mullite bricks
1. Corundum mullite brick has high temperature resistance and high load softening temperature, up to 1700 ℃.
2. It is resistant to chemical corrosion and acid solution or slag. Good thermal stability, stable volume at high temperature, not easy to expand or contract.
3. Good thermal shock resistance, 1100 ℃ water cooling ≥ 30 times, fast cold and hot resistance, not easy to peel off. The compressive strength at room temperature is high, ≥ 85Mpa, and it is not easy to wear during loading and unloading.
4. Corundum mullite bricks can be directly contacted with the flame, resistant to peeling and high temperature, and can be used as the thermal insulation lining of high-temperature industrial furnaces.
Corundum mullite bricks are mainly used in petrochemical industry, large and medium-sized synthetic ammonia gasifiers, magnetic material gasifier materials, high-temperature industrial kiln supporting facilities materials, etc.
3.Application of Alumina corundum mullite bricks
Due to its excellent characteristics, Alumina corundum mullite bricks is often used in petrochemical industrial furnaces, gasifiers and large chemical fertilizer equipment, as well as over 1600℃ ultra-high temperature furnace, furnace lining.
4. Parameters of Alumina corundum mullite bricks
| Item | Corundum Brick 99 | Corundum Brick 90 | Mullite Corundum Brick |
| Al2O3 % | ≥99 | ≥90 | ≥80 |
| SiO2 % | ≤0.2 | ≤8 | ≤18 |
| Fe2O3 % | ≤0.2 | ≤0.2 | ≤0.3 |
| Bulk Density g/cm3 | ≥3.2 | ≥3.0 | ≥2.8 |
| Apparent porosity % | ≤19 | ≤18 | ≤18 |
| Cold compressive strength MPa | ≥100 | ≥100 | ≥100 |
| (0.2Mpa,0.6%)Load softening began to temperature °C | ≥1700 | ≥1700 | ≥1700 |
