| chemical composition | SiO2(%) | Al2O3(%) | Fe2O3(%) | TiO2(%) | CaO(%) | MgO(%) | K2O(%) | MnO(%) | 53±1 | 45±1 | ≤0.3 | ≥0.6 | ≤0.07 | ≥0.06 | < 0.05 | < 0.004 |
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| physical specification | granularity (mesh) | granularity (um90%) | whiteness (%) | oil absorbing rate (g/100g) | PH value | refraction index | water | 325 | 43 | 91±0.5 | 30-35 | 6-8 | 1.62 | 0.1 | 600 | 20 | 92±0.5 | 30-35 | 6-8 | 1.62 | 0.1 | 800 | 15 | 93±0.5 | 35-40 | 6-8 | 1.62 | 0.1 | 1250 | 6 | 95±0.5 | 40-45 | 6-8 | 1.62 | 0.1 | 3000 | 4 | 94±0.5 | 45-50 | 6-8 | 1.62 | 0.2 | 6000 | 2 | 94±0.5 | 50-55 | 6-8 | 1.62 | 0.2 |
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