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项目 item | 单位 unit | 指标 index |
LZ-75 | LZ-65 | LZ-55 | LZ-48 |
AI2O3≥ | % | 75 | 65 | 55 | 48 |
耐火度≥ refractoriness | oC | 1790 | 1790 | 1770 | 1750 |
0.2MPa荷重软化开始温度≥ softening temp under 0.2MPaload | oC | 1520 | 1500 | 1470 | 1420 |
重烧线变化 linear change of-heating | 1500oC,2h | % | +0.1 -0.4 | |
1450oC,2h | | +0.1 -0.4 |
显气孔率≤ porosity | % | 23 | 22 |
常温耐压温度≥ pressure resistance at normal temp | Mpa | 53.9 | 49.0 | 44.1 | 39.2 |