High Alumina Brick
Application:
High alumina brick is used for lining steel – making electric furnaces, glass melting furnaces, and cement rotary furnaces.
High Working Temperature
Good Thermal Stability
Strong Slag Resistance
Good Erosion and Corrosion Resistance
Technical Data:
| Item | LZ – 80 | LZ – 75 | LZ – 70 | LZ – 65 | LZ – 60 | LZ – 55 | LZ – 48 | |
|---|---|---|---|---|---|---|---|---|
| Al₂O₃, % | ≥ | 80 | 75 | 70 | 65 | 60 | 55 | 48 |
| Apparent Porosity, % | ≤ | 21 | 24 | 24 | 24 | 26 | 22 | 22 |
| Cold Crushing Strength, MPa | ≥ | 70 | 60 | 55 | 50 | 45 | 45 | 40 |
| 0.2MPa Refractoriness Under Load, °C | ≥ | 1530 | 1520 | 1510 | 1500 | 1430 | 1450 | 1420 |
| Permanent Linear Change, % | 1500°C*2h – 0.4~0.2 | 1450°C*2h – 0.4~0.1 |
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