... are the liner and grinding medium for various ceramic material, α-Al2O3 powder,flake alumina,kaolin,fusible corundum,porcelain enamel,dye,ceramic glaze ... ball mill machines and so on.95%/99%/99.7% Al2O3 Material Parameters: ItemTest ConditionUnit&Symbol95%Alumina ceramics99%Alumina ceramics99.7 ...