... of fused salt eletrorefining aluminium, corundum eramics, refractories and other alumina chemical products1. Main standardChemical compositionAlumina (AL2O3)/Industry gradeAppearanceWhite powderPackage25kg ... B, P, etc.ApplicationEletrorefining aluminium, corundum eramics, refractories and other alumina chemical products. 2. SpecificationNoItemUnitIndexOne gradeTwo grade1AL2O3)/%≥98.698.42SiO2)/%≤0 ...