Clean separation technologies of rare earth resources in China  

作　　者：廖春生 吴声 程福祥 王嵩龄 刘艳 张玻 严纯华 

机构地区：[1]China Minmetals (Beijing) Research Institute of RE Co.,Ltd. [2]Beijing National Laboratory for Molecular Sciences,State Key Laboratory of Rare Earth Materials Chemistry and Applications,PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry,Peking University

出　　处：《Journal of Rare Earths》2013年第4期331-336,共6页稀土学报（英文版）

基　　金：supported by the 863 Plan-National High Technology Research and Development Program of China (2010AA03A405);973 Program-Major Project of Chinese National Programs for Fundamental Research and Development (2012CBA01200)

摘　　要：After a review on the conventional separation process of rare earths （RE）, hyperlink extraction technology was introduced and a potential process was proposed for clean separation of RE. A great amount of acid, base and water was consumed in the con- ventional RE separation process which included the procedures of raw material dissolving, extraction separation and precipitation. Therefore hyperlink extraction technology had been developed, by which the repeated consumption of acid and base could be avoided during the extraction process. And based on the theory and successfid applications of the hyperlink extraction technology, we pro- posed the integral hyperlink process in which the intermediate acid resulted in individual procedures would be recycled and reused after being treated. The proposed process would make it feasible to consume no chemicals except for oxalic acid, and so could be a promising clean separation technology with a significant reduction on consumption and emission.After a review on the conventional separation process of rare earths （RE）, hyperlink extraction technology was introduced and a potential process was proposed for clean separation of RE. A great amount of acid, base and water was consumed in the con- ventional RE separation process which included the procedures of raw material dissolving, extraction separation and precipitation. Therefore hyperlink extraction technology had been developed, by which the repeated consumption of acid and base could be avoided during the extraction process. And based on the theory and successfid applications of the hyperlink extraction technology, we pro- posed the integral hyperlink process in which the intermediate acid resulted in individual procedures would be recycled and reused after being treated. The proposed process would make it feasible to consume no chemicals except for oxalic acid, and so could be a promising clean separation technology with a significant reduction on consumption and emission.

关 键 词：rare earths RECYCLE hyperlink extraction technology integral hyperlink technology clean separation 

分 类 号：TF845[冶金工程—有色金属冶金]