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Product description of Mullite castable
Mullite castable is a kind of refractory material secretly made of stone, aggregate and powder with a certain binder. It has high mechanical strength, thermal shock resistance, abrasion resistance and other properties, and is mainly used for lining of boilers, blast furnaces, heating furnaces, ceramic kilns and other kilns.
Features of mullite castable
The mullite castable main material has the characteristics of large strength, good volume stability, good heat resistance and seismic resistance, and is resistant to erosion, corrosion and abrasion during use.
Parameters of Mullite castables
| 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 |