指标 | 黏土质 | 高铝质 | 刚玉质 | |
ω(Al2O3)/% | 45 | 75 | 92 | |
ω(SiO2)/% | 50 | 12 | 5 | |
ω(CaO)/% | <1.8 | <1.5 | <1.5 | |
体积密度/g·cm3 | 110℃,24h | 2.3 | 2.60 | 3.00 |
1350℃,3h | 2.26 | 2.61 | 3.10 | |
冷态耐压强度/MPa | 110℃,24h | 72 | 75 | 85 |
1350℃,3h | 90 | 115 | 125 | |
烧后线变化率/% | 1000℃,3h | -0.3 | -0.2 | -0.2 |
1350℃,24h | ±0.3 | ±0.5 | ±0.5 | |
最高使用温度/℃ | 1450 | 1600 | 1700 | |
拌合需水量/% | 6.0~6.5 | 6.0~6.5 | 4~5 |
指标 | A | B | C | |
ω(Al2O3)/% | 90 | 88 | 85 | |
ω(MgO)/% | 6 | 6 | 6 | |
ω(CaO)/% | 3 | 5 | 8 | |
烧后体积密度/g·cm3 | 110℃,24h | 3.20 | 3.10 | 3.05 |
1000℃,3h | 3.10 | 3.08 | 2.92 | |
1600℃,3h | 3.15 | 2.95 | 2.86 | |
烧后抗折强度/MPa | 110℃,24h | 6.5 | 9.5 | 10.0 |
1000℃,3h | 5.5 | 7.6 | 7.8 | |
1600℃,3h | 30.0 | 21.5 | 20.5 | |
烧后线变化率/% | 110℃,24h | — | — | — |
1000℃,3h | 0.1 | 0 | 0 | |
1600℃,3h | -0.1 | +0.8 | +0.9 | |
加水量/% | 4.8~5.4 | 5.4~5.8 | 5.5~6.5 | |
自流值/㎜ | >185 | >185 | >185 |