Separation of uranium and thorium from rare earths for rare earth production – A review |
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| Affiliation: | 1. Depto. de Ingeniería de Procesos e Hidráulica, Av. San Rafael Atlixco 186, Col. Vicentina, Universidad Autónoma Metropolitana, Unidad Iztapalapa, México, D.F. 09340, Mexico;2. Dept. of Materials Science and Engineering, University of California, Berkeley, CA 95720, USA;1. Hot Laboratory Center, Atomic Energy Authority, Cairo, Egypt;2. Nuclear Materials Authority, P.O. Box 530 El-Maadi, Cairo, Egypt;1. State Key Laboratory of Rare Earth Resource Utilization, ERC for the Separation and Purification of REs and Thorium, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Rare earths play critical roles in the applications of advanced materials. Recently, the recovery of rare earths from a variety of resources has gained much interest. Radioactive elements of uranium and thorium are usually associated with rare earth deposits. The separation of uranium and thorium from rare earths is often a big concern in rare earth industry in order to reasonably manage the radioactive nuclides. This paper reviews the technologies used for separating uranium and thorium from rare earths in rare earth production, particularly in China. Some potentially applicable methods, such as precipitation and solvent extraction for the separation of uranium and thorium from rare earths in different media were also reviewed. |
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| Keywords: | Rare earths Uranium Thorium Separation |
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