Bauxite aggregates refers to the sedimentary rock, which has relatively high aluminum content. It is the primary source of aluminum in the world. Bauxite consists mostly of aluminum minerals gibbsite (Al (OH) 3), boehmite (γ-AlO (OH)) and diaspore (α-AlO (OH)), mixed with the two iron oxides goethite and hematite, aluminum clay mineral kaolinite, and small amounts of anatase (TiO2) and ilmenite (FeTiO3 or FeO.TiO2). Bauxite aggregates forms when laterite soils are severely leached of silica and other soluble materials in a wet tropical or subtropical climate. China is the leading producer of bauxite; the country accounts for almost 50% of the global production. It is followed by Russia, Canada, and India. Demand for aluminum has been rising significantly. The known reserves of its bauxite ore are sufficient to meet the global demand for aluminum. Bauxite is the primary ore of aluminum. Almost all of the aluminum that has been produced has been extracted from bauxite. The U.S. possesses a few small bauxite deposits. However, at least 99% of the bauxite used in the U.S. is imported. The country is also a major importer of aluminum metal. Bauxite aggregates constitute a mixture of ...