Calcined Bauxite
Bauxite is an aluminum ore.It consists largely of the AL minerals gibbsite Al (OH)3,boehmite and diaspore AlOOH,together with the iron oxides goethite and hematite,the clay mineral kaolinite and small amounts of anatase TiO2.Bauxites are typically classified according to their intended commercial application: abrasive,cement,chemical,metallurgical,refractory ,etc.