Separation of rare-earth ions by non-aqueous solvent extraction KU Leuven
The present invention relates to a new solvent extraction process for the extraction of rare earth elements and the separation of a mixture of rare earth elements into the individual rare earth elements. Said process comprises the extraction of at least one rare earth element from an organic phase A into another immiscible organic phase B. The invention further relates to a non-aqueous solvent extraction process wherein at least one rare earth element is extracted from an organic phase A that comprises chloride ions into another immiscible organic phase B, wherein said organic phase B can be ...