Metallurgical process for valuable elements recovery from
Contrarily, the bauxite calcination red mud can be directly used as the raw materials of construction due to the existence of some reactive substances, for instance β-2CaO·SiO 2 (Liu et al., 2009a). As for high silicon and low grade bauxite ores, the bauxite calcining method is employed (Liu et al., 2007), otherwise Bayer process will lead to the