Description
| Item | LZ-75 | LZ-65 | LZ-55 | LZ-48 | |
|---|---|---|---|---|---|
| Al2O3 | ≥ | 75 | 65 | 55 | 48 |
| Refractoriness | ≥ | 1790 | 1790 | 1770 | 1750 |
| Refractoriness under load 0.2Mpa ℃ | ≥ | 1520 | 1500 | 1470 | 1420 |
| Permanent linear change, % | 1550℃×5h | +0.1 -0.4 | +0.1 -0.4 | +0.1 -0.4 | - |
| Permanent linear change, % | 1450℃×2h | - | - | - | +0.1 -0.4 |
| Apparent porisity, % | 23 | 23 | 22 | 22 | |
| Cold crushing strength, MPa | 53.9 | 49.0 | 44.1 | 39.2 | |
