What is bauxite material in cement manufacturing

Bauxite process in cement industry Should have a1 2 o 3 40 sio 2 5 and fe 2 o 3 30 40 bauxite for use in cement industry in the steel industry metallurgical grade bauxite is used as a flux as partial replacement of fluorspar consumption has varied from a high of about 27 500 tonnes in 1985