| Shape |
Brick |
| Place of Origin |
China (Mainland) |
| Al2O3 Content (%) |
45%-80% |
High alumina brick Item: LZ-85LZ-80LZ-75LZ-65LZ-55LZ-48Al2O3 oC≥85≥80≥75≥65≥55≥48Apparent porosity oC≤23≤22≤23≤23≤22≤22Cold crushing strength MPa≥55≥55≥50≥45≥40≥35Refractoriness under loadin 0.2MPa≥1550≥1530≥1520≥1500≥1450≥1420Permanent linear change1500oC×2h-0.4 0.1-0.4 0.10.4 0.1-0.4 0.10.4 0.11450oC×2h-0.4 0.1