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Separation of Ce and La from Synthetic Chloride Leach Solution of Monazite Sand by Precipitation and Solvent Extraction

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Abstract

Precipitation and solvent extraction experiments have been performed to recover light rare earths from simulated monazite sand chloride leach solutions. Precipitation conditions were obtained to recover Ce by adding NaClO as an oxidant. Among some cationic extractants (PC 88A, D2EHPA, Cyanex 272, LIX 63), PC 88A showed the best performance to separate La from the resulting chloride solution. Furthermore, the mixture of PC 88A with other solvating (TBP, TOPO) and amine extractants (Alamine 336, Aliquat 336) was tested to increase the separation factor of La from Pr and Nd. The use of mixed extractants greatly enhanced the separation of La from the two other metals. McCabe–Thiele diagrams for the extraction of Pr and Nd with the PC 88A/Alamine 336 mixture were constructed.

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Acknowledgments

This work was supported by a grant from the fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea. We gratefully thank the Gwangju branch of the Korea Basic Science (KBSI) for ICP data.

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Authors and Affiliations

  1. Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University, Chonnam, 534-729, Republic of Korea

    Raju Banda (PhD Scholar, Researcher) & Man Seung Lee (Professor)

  2. Division of Minerals Utilization and Materials, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejon, 305-350, Republic of Korea

    Ho Seok Jeon (Principal Researcher)

  3. LS-Nikko, Ulsan, Republic of Korea

    Raju Banda (PhD Scholar, Researcher)

Authors
  1. Raju Banda
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  2. Ho Seok Jeon
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  3. Man Seung Lee
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Correspondence to Man Seung Lee.

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Manuscript submitted January 17, 2014.

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Banda, R., Jeon, H.S. & Lee, M.S. Separation of Ce and La from Synthetic Chloride Leach Solution of Monazite Sand by Precipitation and Solvent Extraction. Metall Mater Trans B 45, 2009–2017 (2014). https://doi.org/10.1007/s11663-014-0124-x

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  • DOI: https://doi.org/10.1007/s11663-014-0124-x

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