含铝80%铝矾土
铝矾土理化指标（%）：
成份 | Al2O3 | Fe2O3 | TiO2 | CaO+MgO | K2O+Na2O | 耐火度 ℃ | 体积密度g/cm3 | 灼减 |
精特级 | ≥85 | ≤2.0 | ≤4.0 | ≤0.8 | ≤0.5 | ≥1790 | ＞3.5 | ≤0.5 |
特级 | ≥80 | ≤2.2 | ≤5.0 | ≤1.0 | ≤0.7 | ≥1790 | ＞3.2 | ≤0.5 |
一级 | ≥75 | ≤2.5 | ≤5.0 | ≤1.0 | ≤0.8 | ≥1790 | ＞3.0 | ≤0.5 |
