Recovery of scandium from bauxite residue——red mud:a review

作     者：Na Zhang Hong-Xu Li Xiao-Ming Liu 无

作者机构：School of Metallurgical and Ecological EngineeringUniversity of Science and Technology Beijing Beijing Key Laboratory of Rare and Precious Metals Green Recycling and ExtractionUniversity of Science and Technology Beijing 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2016年第35卷第12期

页      面：887-900页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 51234008 and 51574024) the China Postdoctoral Science Foundation (No. 2016M590046) 

主　　题：Red mud Scandium Acid leaching Solvent extraction Ion exchange Selectivity 

摘      要：Red mud is a slimy caustic residue generated from alumina production. Taking into account the rela- tively considerable content and availability of scandium, red mud can be viewed as an important and promising scandium resource rather than a solid waste. This paper is primarily to review the investigations of scandium recov- ery from red mud based on the most widely used hydrometallurgical processes including acid leaching, sol- vent extraction and ion exchange adsorption. It is thought that recovery of scandium from red mud should be con- sidered as a direct objective rather than a by-product in the development of overall flowsheet. In order to achieve environmentally-friendly processes with high scandium recovery and low cost, more attention is required to be paid to optimizing the selective leaching of scandium to decrease mineral acid consumption and alleviate pollution, and developing new solvent extraction systems and novel ion exchange adsorption materials with high selectivity and recognition for scandium.