|
一级高铝 | 二级高铝 | 三级高铝 | ||||
LZ-75 | LZ-65 | LZ-55 | LZ-48 | ||||
Al2O3,≥ % | 75 | 65 | 55 | 48 | |||
耐火度 Refractoriness,≥,℃ | 1790 | 1770 | 1750 | ||||
0.2Mpa 荷重软化开始温度 RUL, T0.6,℃≥,℃ | 1520 | 1500 | 1470 | 1420 | |||
重烧线变化 Linear change on reheating,% |
1500℃×2h | +0.1 | -0.4 | -0.4 | |||
1450℃×2h | — | — |
+0.1 -0.4 |
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显气孔率 Apparent porosity,≤ % | 23 | 22 | |||||
常温耐压强度 CCS,≥Mpa | ≥53.9 | ≥49.0 | ≥44 | ≥40 |