材质 | 原料 | Al2O3 (ω) | SiO2 (ω) | FeO (ω) | MgO (ω) | Cr2O3 (ω) | ZrSiO4 (ω) | 其它 |
石英质 | 天然硅石 | - | 98.02 | - | - | - | - | - |
铬质 | 铬矿加工品 | 16%~25% | 2%~12% | 14%~17% | 12%~18% | 32%~35% | - | - |
锆质 | 锆英石 | - | ≤2% | - | - | - | ≥97% | ≤1% |
刚玉质 | 电熔氧化铝 | ≥98% | - | - | - | - | - | - |
镁质 | 海水镁砂 | - | - | - | ≥94% | - | - | - |