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
