... use for ceramics,refractory,polishing Product DescriptionCalcined Alumina Appearance: White powder Material: A-AL203 Grade Standard: ... 7. Outstanding resistance to corrosion Property: Calcined Alumina is white powder, good flowability, performance stability, hardly soluble ... wear-resisting, corrosion-resisting products, such as high alumina refractory products, strong ceramics, high grade abrasive, ...