Pilot-Plant Investigation of the Leaching Process for the Recovery of Scandium from Red Mud

By M. Ochsenkühn-Petropoulou, K. Hatzilyberis, and Leonidas N. Mendrinos, C. Salmas. 2002

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Leaching of rare earths from bauxite residue (red mud) (2015, methodology): “Some literature data on the leaching of REEs from bauxite residue are available (Fulford et al., 1991; Ochsenkühn-Petropulu et al., 1996; Ochsenkühn-Petropoulou et al., 2002; Qu and Lian, 2013; Smirnov and Molchanova, 1997; Wang et al., 2011, 2013; Xue et al., 2010; Yatsenko and Pyagai, 2010; Zhang ”
Recovery of Rare Earths and Other Valuable Metals From Bauxite Residue (Red Mud): A Review (2016, methodology): “Therefore, the leaching process with dilute HNO3 has been performed and optimized at a pilot scale for the recovery of scandium from bauxite residue [48].”
Metallurgical process for valuable elements recovery from red mud—A review (2015, background): “12 illustrates a pilot-plant process based on the former laboratory-scale for the extraction of scandium from red mud that contained economically interesting concentration of scandium element (Ochsenkühn-Petropoulou et al., 2002).”
Rare Earths and the Balance Problem (2015, background): “Bauxite residue (red mud) is a by-product of the aluminium production and is quite rich in scandium [17], whereas phosphogypsum is a by-product of the phosphoric acid production from phosphate rocks [16].”
Smelting of Bauxite Residue (Red Mud) in View of Iron and Selective Rare Earths Recovery (2016, background): “Extraction ofREEs and of scandium in particular from bauxite residue can be economically feasible [3].”