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Chemical composition | Physical indicators | ||||||||||||||||
AL2O3% | SiO2% | Fe2O%3 | moisture | whiteness | -2um% | Oil absorption (g)100g-l | PH | Ignition loss | Refractive index | ||||||||
36±0.5 | 47±0.5 | ≤0.3 | 5-6% | 87-90% | 85 | 60~65 | 6.7~7.6 | 12% | 1.65 | ||||||||



















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