高铝砖理化指标
Physical and chemical of high alumina brick
项 目
Item |
指 标 Index |
LZ-80 |
LZ-75 |
LZ-65 |
LZ-55 |
LZ-48 |
Al2O3 % 不小于 |
80 |
75 |
65 |
55 |
48 |
Fe2O3 % 不大于 |
1.5 |
1.5 |
1.8 |
1.8 |
2 |
常温耐压强度Mpa CCS |
≥60 |
≥54 |
≥49 |
≥45 |
≥40 |
显气孔率,% Apparent porosity |
≤22 |
≤23 |
≤23 |
≤23 |
≤23 |
0.2Mpa荷重软化开度,℃
Refractoriness under load |
≥1520 |
≥1520 |
≥1500 |
≥1450 |
≥1420 |
重烧线变化率,(1450℃,2h)﹪
Reheating linear change |
+0.1/-0.4 |
+0.1/-0.4 |
+0.1/-0.4 |
+0.1/-0.4 |
--- |
耐火度,℃ Refractoriness |
﹥1790 |
﹥1750 |
﹥1730 |
﹥1710 |
﹥1690 |
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