牌号 理化指标 | AM-70 | AM-80 | AM-90 |
Al2O3 | 71-77% | 81-86% | 88-92% |
MgO | 22-27% | 13-17% | 7-11% |
SiO2 | ≤0.30% | ≤0.30% | ≤0.25% |
CaO | ≤0.6% | ≤0.5% | ≤0.4% |
Na2O | ≤0.3% | ≤0.4% | ≤0.4% |
Fe2O3 | ≤0.3% | ≤0.3% | ≤0.3% |
体积密度 | ≥3.35 g/cm3 | ≥3.40 g/cm3 | ≥3.45 g/cm3 |
真密度 | ≥3.50 g/cm3 | ≥3.53 g/cm3 | ≥3.56 g/cm3 |
显气孔率 | ≤3.5% | ≤4.0% | ≤5.0% |
矿物相组成 | 尖晶石 | 尖晶石、微量刚玉 | 尖晶石、刚玉 |
粒度 | 8-5MM 5-3MM 3-1MM 1-0MM | ||
细粉 | 180F 200F 240F 325F(Fe2O3 ≤0.4%) | ||
