A process for preparing a metal, rare metal and rare earth metal concentrate from bayer process alumina production residues or from materials of a similar chemical composition to such residues, and refining the concentrate thus obtained.

摘要

This is a multistage process for the preparation of a metal, rare metal and rare earth metal concentrate from bayer (red mud) process alumina production residues, or from materials with a chemical composition similar to red mud, and a multistage process to separate the elements of interest, turn them into simple products to be reused in the bayer process and / or send them to their reference markets. The only accompanying figure shows the simplified block diagram of the invention in terms of its broadest definition.