Gerhold Chemetals Co., Ltd.

Bauxite supply situation

Calcined Bauxite is available as a wheel that serves its purpose in the construction industry. Calcined Bauxite is the principal ore of aluminum. Calcined Bauxite contains Hydrous aluminum oxides, formed through the laterization of aluminous rocks in tropical and subtropical areas. Calcined bauxite is obtained by heating bauxite superior high temperature 850oC to 1600oC. Moisture is removed by increasing the alumina content. Compared to an alumina content of about 55% to 60% by crude bauxite, calcined bauxite has an alumina content of 74% to 82%. Heating is performed in different types of furnaces.