Calcined Alumina

Is made by firing a source alumina at various temperatures, depending upon desired level of calcination ( burn), into alpha alumina varying from 5-100 % moving it to its densest and most stable form.The calcined alumina particles appear as crystalline agglomerates which are larger when the degree of calcination is higher.
Calcined alumina is generally used in the manufacture of refractories,glass,ceramics and enamel etc