Process for the production of concentrates of metals, rare metals and rare earth metals from residues of alumina production by the Bayer process or from materials having a similar chemical composition to the residue, and purification of the concentrates thus obtained

摘要

A multi-stage process for the production of concentrates of metals, rare metals and rare earth metals from the residue of the alumina production by the Bayer process (red mud) or from materials with similar chemical composition to red mud, and the target element A multi-stage method for converting them into a single product and reusing them in the buyer process and / or sending them to the respective reference market. The only accompanying diagram shows a simplified block diagram of the invention in terms of its broadest definition.