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《JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY》 1995-03
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Problem of the Removal of Thorium from Rare Earths

Cai Ruiqing (Department of Applied Mathematics, Beijing Institute of Technology Beijing 100081)Li Weishi (Nuclear Information Institute, Beijing 100037)  
In the current hydrometallurgy processing of rare earths, the methods, such as selected precipitation (pH1.05), (liquid) extraction, or fractional precipitation-fractional crystallization, are usually ed to remove thorium. regardless of the acid or the alkaline proeess. The principle of there methods is based on the difference in partition value K between thorium and rare earths. The insufficiency of above methods in processing is that the thorium partitioned into several parts, may impair the purity of certain final individual rare earth product and environmental protection. In order to improve the removal of thorium from rare earth, the character of thorium and its behaviour on cation and anion ion exchanger are analyzed. On the basis of above analysis the cation and anion ion exchange chromatography is proposed as a new technology in rare earth hydrometallurgy processing for better removal of thoritum from rare earth.
【CateGory Index】: TF845.032
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【References】
Chinese Journal Full-text Database 1 Hits
1 ZHU Zhi-chao;Sichuan Radiation Detection and Protection Institute of Nuclear Industry;;Determination of thorium in rare earth products[J];中国测试;2013-05
【Co-references】
Chinese Journal Full-text Database 3 Hits
1 LI Yuan-gong(Guilin Corporation of Jinyuan Uranium Co.,Ltd.,CNNC,Ziyuan 541400,China);Determination of trace thorium in environmental soil samples[J];铀矿冶;2010-03
2 Cai Ruiqing (Department of Applied Mathematics, Beijing Institute of Technology Beijing 100081)Li Weishi (Nuclear Information Institute, Beijing 100037);Problem of the Removal of Thorium from Rare Earths[J];北京理工大学学报;1995-03
3 Wang Mulin;Jiang Xiuyan; Dong Xiangying(Depart-ment of Chemistry,Neimenggu University,Huhehot 010021);Studies on Color Reaction of Chlorop-hosphonazo p-Aminohippuric Acid with Tho-rium and Its Applications[J];分析试验室;1995-03
【Secondary References】
Chinese Journal Full-text Database 2 Hits
1 TIAN Chun-xia;LIU Wen-hua;LIU Jing;Beijing General Research Institute for Nonferrous Metals;;Rare earth elements analysis[J];分析试验室;2018-02
2 QU Jing;Hebei Coalfield Geology Research Institute;;Determination on Thorium in Coal[J];煤炭与化工;2014-06
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