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Product introduction of mullite castable
Mullite castable is a refractory castable made of mullite aggregate, powder and certain binder. It has high mechanical strength and good thermal shock resistance, abrasion resistance and other properties. It is mainly used as the lining of boiler, blast furnace hot blast furnace, heating furnace, ceramic kiln and other furnaces.
Advantages of mullite castable
High strength
Good volume stability
Excellent thermal shock resistance
Application of mullite castable
Mullite castable has high temperature and can be used as working lining directly in contact with flame. It is suitable for tubular heating furnace, light diesel, ethane cracking furnace lining, atmospheric and decompression furnace, sulfur recovery device, steam boiler, turtleshell mesh insulation layer, two cylinders and pipe insulation single layer, other industrial furnace door, fire viewing hole, observation hole door lining, etc.
Parameters of mullite castable
| Product Grade | MJ55 | MJ60 | MJ65 | MJ70 |
| Al2O3 content, % ≥ | 55 | 60 | 65 | 70 |
| Bulk density, g/cm3 ≥ | 2.2 | 2.3 | 2.4 | 2.5 |
| Flexural strength, MPa ≥ | 7 | 7 | 8 | 9 |
| Compressive strength, MPa ≥ | 30 | 35 | 40 | 45 |
| Linear variation(%) ≤ | ±0.5 | ±0.5 | ±0.5 | ±0.5 |
| Maximum use temperature, ℃ | 1450 | 1500 | 1550 | 1600 |