| ITEMS | Specification |
| Al2O3 (%) | ≥55 |
| Fe2O3 (%) | ≤1.5 |
| Bulk density (g/cm3) | ≥2.15 |
| AP (%) | ≤25 |
| CCS (Mpa) | ≥40 |
| RUL°C (0.2MPa) | ≥1450 |
| PLC(%)(1450°C×2h) | -0.2%~+0.2% |
| Thermal shock resistance(1100°C,water cooling)/cycles | ≥100 |
Application:
Mullite refractory fire brick mainly used in lining of blast furnace, hot blast stove, electric furnace roof, reverberatory furnace and rotary kiln etc.