... granularity, stablequality 2,for ceramics, refractory, polishing calcined alumina( ceramic grade)1ball grain,good liquidity,granularity, stablequality 2,for ceramics ... , refractories and surface treatmentwhite thin alumina powder for 99#ceramicsCalcined alumina for ceramics, refractories and surface treatment.Combined ... %Fe2O3 %Na2O %L.O.I %True Specific Gravityg/cm3≥99≥96.0≤0.06≤0.03≤0.30≤0.20 ...