METHOD FOR GROUPING AND SEPARATING YTTRIUM OXIDE FROM HIGH-YTTRIUM RARE EARTH ORE AND METHOD FOR GROUPING AND SEPARATING YTTRIUM OXIDE FROM MIDDLE-YTTRIUM EUROPIUM-RICH RARE EARTH ORE

摘要

A method for grouping and separating yttrium oxide from high-yttrium rare earth ore and a method for grouping and separating yttrium oxide from middle-yttrium europium-rich rare earth ore, relating to the technical field of rare earth extraction and separation, and solving the problems of naphthenic acid needing to be replaced and the difficulty of quickly analysing the concentration changes of two extractants in a HAB system on site during the long-term use of yttrium oxide separation process flows in existing naphthenic acid systems and HAB mixed systems. The grouping and separation methods have the advantages of being advanced and rational and having a short process flow, low production cost, strong adaptability, and easy operation and control, the performance of comprehensive technical and economic indicators being superior to naphthenic acid processes, and having practical application value.