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高炉用耐火材料
| 项目 牌号 |
刚玉莫来石 |
复合棕刚玉砖 |
黄刚玉砖 |
GL-65 |
GL-55 |
ZGN-48 |
ZGN-42 |
GN-42 |
| AL2O3 % |
≥88 |
≥78 |
≥86 |
≥65 |
≥55 |
≥48 |
≥42 |
≥42 |
| Fe2O3 % |
≤0.5 |
|
≤1.5 |
≤2.0 |
≤2.0 |
≤1.6 |
≤1.6 |
≤1.7 |
| SiC % |
|
≥12 |
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| 耐火度 ℃ |
>1790 |
>1790 |
>1790 |
>1790 |
≥1770 |
≥1750 |
≥1750 |
≥1750 |
| 显气孔率 % |
≤16 |
≤16 |
≤18 |
≤19 |
≤19 |
≤16 |
≤15 |
≤16 |
| 体积密度 g/cm3 |
≥3.0 |
≥2.95 |
≥2.9 |
≥2.8 |
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| 常温耐压高强度 MPa |
≥100 |
≥100 |
≥80 |
≥60 |
≥55 |
≥50 |
≥60 |
≥50 |
| 荷重软化温度 ℃ |
≥1700 |
≥1660 |
≥1650 |
≥1500 |
≥1480 |
≥1500 |
≥1450 |
≥1430 |
|
1500×3 |
1450×2 |
1500×2 |
1500×2 |
1450×2 |
1450×3 |
1450×3 |
1450×3 |
| ±0.1 |
±0.2 |
±0.1 |
0-0.2 |
0-0.2 |
0-0.2 |
0-0.2 |
0-0.3 |
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