A white crystalline power, alumina is obtained by calcining
aluminum hydroxide. Although there are many variations of alumina
crystals, the one that is the stablest and most used is
&#**5;-alumina. It has high melting point, is thermally
stable, has diamond hardness. Moreover, it has high electric
resistance and is stable against alids and alikalis. Used as raw
materials for aluminous refractory, ceramic product, sparking
plugs and grinding material. Customers choose the products
according chemical composition and physical properties
