ADVANCES IN SOLVENT EXTRACTION AND SEPARATION OF RARE EARTHS

摘要

This paper introduces briefly what our lab has been studying on new extraction systems and separation of REs in recent years, which includes: 1. New systems superior in separating heavy REs with P507; (1) The solvent extraction of rare earths from chloride solution has been investigated using mixtures of P507 and P204, Cyanex 272, Cyanex 302, and Cyanex 301. (2) P507-isooctanol (ROH)-REs new system. 2. Two-solvent (HAB) extracting system that is superior in separating Y(III) to HA.