钢包透气砖
| 指标/牌号 | 刚玉尖晶石质 Corundum spinel | 铝尖晶石质 Aluminospinel | 浇注成型铬/刚玉尖晶石质 Electron body cast chrome/corundum spinel | 机压成型铝镁碳质 Pressed aluminum magnesium carbon |
|---|---|---|---|---|
| Al2O3(%) | ≥90 | ≥85 | ≥80 | 70-85 |
| MgO(%) | ≥4 | ≥4 | 4-10 | 5-20 |
| Cr2O3(%) | 2-4 | 2-4 | ||
| 体积密度(g/cm³) Bulk density | ≥3.10 | ≥3.10 | ≥3.15 | ≥3.05 |
| 显气孔率(%) Apparent porosity | ≤17 | ≤17 | ≤18 | ≤8 |
| 耐压强度(MPa) Compressive strength | ≥60 | ≥80 | ≥90 | ≥50 |
| 线变化率(%)1450℃×3h Linear change rate | 0-0.5 | 0-0.5 | 1.2±0.2 |
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钢包耐材
