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http://dx.doi.org/10.7844/kirr.2017.26.2.3

Separation of Light Rare Earth Elements by Solvent Extraction with a Mixture of Cationic and Tertiary Amine  

Lee, Man-Seung (Department of Advanced Material Science and Engineering, Institute of Rare Metal, Mokpo National University)
Son, Seong Ho (Korea Institute of Industrial Technology, Incheon Technology Service Centre)
Publication Information
Resources Recycling / v.26, no.2, 2017 , pp. 3-10 More about this Journal
Abstract
Rare earth elements with high purity are demanded for the manufacture of advanced materials. Light rare earth elements are contained in domestic monazite and Ni-MH batteries. In this paper, solvent extraction to separate the light rare earth elements from hydrochloric acid leaching solutions of these resources was discussed. A mixture of cationic and tertiary amine shows synergistic effect on the extraction of LREEs and the extent of pH decrease during extraction is reduced. The effect of solution pH on the extraction and synergism was reviewed. Acquisition of the operation data with mixer-settler on the separation of LREEs by this mixture is necessary to develop a process.
Keywords
rare earth; monazite; Ni-MH battery; solvent extraction; separation;
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Times Cited By KSCI : 1  (Citation Analysis)
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