... liquidity,granularity, stablequality 2,for ceramics, refractories Precision alumina powder 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 ... finish. Al2O3 %a-Al2O3 %SiO2 %Fe2O3 %Na2O %L.O.I %True Specific Gravityg/cm3≥99≥96.0≤0 ...