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Korean Journal of Metals and Materials > Volume 54(8); 2016 > Article
Korean Journal of Metals and Materials 2016;54(8): 592-597. doi: https://doi.org/10.3365/KJMM.2016.54.8.592
Solvent Extraction of Pr and Nd from Chloride Solution by Mixtures of Acidic Extractants and LIX 63
Yang Liu1, Ho Seok Jeon2, Man Seung Lee1,*
1Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University, Chonnam 58554, Republic of Korea
2Division of Minerals Utilization and Materials, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejon 34132, Republic of Korea
Correspondence  Man Seung Lee ,Tel: +82-61-450-2492, Email: mslee@mokpo.ac.kr
Received: 17 November 2015;  Accepted: 24 March 2016.  Published online: 5 August 2016.
Mixtures of acidic extractants and LIX 63 were employed to improve the extraction efficiency of Pr and Nd from chloride solutions. The effect of the composition of the extractant mixtures has been studied. The order of metal extraction by single acidic extractant was D2EHPA > PC88A > Cyanex 272 > Cyanex 301. The addition of LIX 63 to the acidic extractants resulted in a synergistic effect, and the strength of the effect was the reverse order of that found for extraction by single extractants. Moreover, mixing of saponified Cyanex 272 and LIX 63 enhanced the extraction, while the addition of Alamine 336 to the mixtures of Cyanex 272 and LIX 63 depressed the extraction.
Keywords: Pr, Nd, organophosphorus acid, LIX 63, synergistic solvent extraction
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