... 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 ... shapes, monolthics and pre-case shapes used in foundry, iron and steel making applications.Ceramic grades are ...