项目(Item) | 指标(Index) | |||||
LZ-48 | LZ-55 | LZ-65 | LZ-75 | LZ-80 | ||
AL2O3 ,%≥ | 48 | 55 | 65 | 75 | 80 | |
耐火度,℃≥ Refractoriness | 1750 | 1770 | 1790 | 1790 | 1820 | |
0.2Mpa荷重软化开始温度,°C≥ Refractoriness under load, 0.2MPa, | 1420 | 1450 | 1500 | 1520 | 1530 | |
加热**线变化,% Permanent linear Change | 1500℃,2h | 0.1-0.4 | ||||
1450℃,2h | 0.1-0.4 | |||||
显气孔率,%≤ Apparent porosity | 22 | 22 | 23 | 23 | 22 | |
常温耐压强度,Mpa≥ Cold crushing strength | 35 | 40 | 45 | 50 | 55 |