Al2O3: 55-70%
Erosion resistance
High strength
Good thermal stability
Mullite Castable
Description
Mullite castable is a refractory castable made of mullite as aggregate, powder and certain binder.
Features
low thermal conductivity.
Good insulation performance.
Can be baked quickly, shortening the duration of the oven.
Specification
| Product Grade | KRMJ55 | KRMJ60 | KRMJ65 | KRMJ70 |
|---|---|---|---|---|
| Al2O3 content (%) | ≥55 | ≥60 | ≥65 | ≥70 |
| Bulk density, g/cm3 | ≥22 | ≥2.3 | ≥2.4 | ≥2.5 |
| Flexural strength, MPa | ≥7 | ≥7 | ≥8 | ≥9 |
| Compressive strength, MPa | ≥30 | ≥35 | ≥40 | ≥45 |
| inear variation(%) | ≤±0.5 | ≤±0.5 | ≤±0.5 | ≤±0.5 |
| Maximum use temperature, (℃ ) | 1450 | 1500 | 1550 | 1600 |
Application
Mullite castables are used in petrochemical industry tubular heating furnaces, light diesel oil, ethane cracking furnace linings, atmospheric and vacuum furnaces, sulfur recovery devices, steam boilers, tortoise shell net insulation layers, two cylinders and pipe insulation units Floor, other industrial furnace doors, fire viewing holes, lining of observation hole doors, etc.
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