Index Type |
Chemical Composition(%) |
||||
Al2O3 | SiO2 | Fe2O3 | BD(g/cm3) | Water absorption(%) | |
M45 | 43-47 | 49-53 | ≤0.8 | ≥2.55 | ≤2.0 |
M55 | 53-57 | 34-45 | ≤0.6 | ≥2.60 | ≤2.0 |
M60 | 58-62 | 36-40 | ≤0.35 | ≥2.70 | ≤2.0 |
M70 | 68-72 | 26-30 | ≤0.35 | ≥2.80 | ≤1.5 |