Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
권호 표지
DOI QR코드

DOI QR Code

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

양이온 추출제와 아민의 혼합추출제에 의한 경희토류금속의 분리

  • 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)
  • Received : 2016.11.29
  • Accepted : 2017.01.10
  • Published : 2017.04.30
Download PDF
⟨ Previous Next ⟩

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.

희토류 원소는 첨단 산업용 소재의 구성 성분으로 고순도가 요구된다. 국내산 monazite광과 Ni-MH전지는 경희토류를 함유한 자원이다. 이러한 자원을 염산으로 침출한 용액에서 경희토류성분을 용매추출로 분리하는 공정에 대해 고찰하였다. 양이온 추출제와 3차 아민의 혼합추출제로 경희토류를 추출시 상승효과가 있으며 pH 감소가 둔화된다. 혼합추출제 사용시 수상의 pH가 금속의 추출 및 상승효과에 미치는 영향을 분석하였다. 향후 양이온과 아민의 혼합추출제에 의한 경희토류 분리공정을 개발하기 위해서는 mixer-settler의 조업 자료 확보가 필요하다.

Keywords

References

  1. Lee, M. S. and Jeon, H. S., 2010 : Extractive metallurgy and separation technology of rare earth ores, J. of Korean Inst. of Resources Recycling, 19, pp. 27-35.
  2. Lucas, J. et al., 2011 : Rare earths, Science, Technology Production and Use, p 74, Elsevier.
  3. Gupta, C. K. and Krishnamurthy, N., 2005 : Extractive metallurgy of rare earths, CRC Press, NY.
  4. Liu, Y., Jeon, H. S., and Lee, M. S., 2016 : Solvent extraction of Pr and Nd from chloride solution by mixtures of acidic extractants and LIX 63, Korean J. Met. Mater., 54, pp. 592-597. https://doi.org/10.3365/KJMM.2016.54.8.592
  5. Liu, Y., Jeon, H. S., and Lee, M. S., 2016 : Solvent extraction of Pr and Nd from chloride solutions using ternary extractant system of Cyanex 272, Alamine 336 and TBP, Journal of Industrial and Engineering Chemistry, 31, pp. 74-79.
  6. Liu, Y., Jeon, H. S., and Lee, M. S., 2016 : Solvent extraction of Pr and Nd from chloride solutions by mixtures of Cyanex 272 and amine extractants, Hydrometallurgy, 150, pp. 61-67.
  7. Liu, Y., Jeon, H. S., and Lee, M. S., 2016 : Separation of Pr and Nd from La in chloride solution by solvent extraction with a mixture of Cyanex 272 and Alamine 336, Met. Mater. Inter., 21, pp. 944-949.
  8. Banda, R., Jeon, H. S., and Lee, M. S., 2015 : Separation of Nd from mixed chloride solutions with Pr by extraction with saponifed PC 88A and scrubbing, Journal of Industrial and Engineering Chemistry, 21, pp. 436-442. https://doi.org/10.1016/j.jiec.2014.03.002
  9. Banda, R., Jeon, H. S., and Lee, M. S., 2014 : Separation of Ce and La from synthetic chloride leach solution of monazite sand by precipitation and solvent extraction, Metallurgical and Materials Trans. B, 45B, pp. 2009-2017.
  10. Lee, M. S., et al., 2005 : Solvent extraction of neodymium ions from hydrochloric acid solution using PC88A and saponified PC88A, Separation and Purification technology 46, pp. 72-78. https://doi.org/10.1016/j.seppur.2005.04.014
  11. Rydberg, J., et al., 2004 : Solvent extraction principles and practice, second Ed., Marcel Dekker, NY., pp. 498-502.
  12. Marcus, Y., A. S. Kertes, and Yanir, E., 1974 : Equilibrium constants of liquid-liquid distribution reactions, Part 1: Organophosphorus extractants, Butterworths, pp. 101-102.
  13. Liu, Y., Jeon, H. S., and Lee, M. S., 2015 : Extraction of hydrochloric acid with binary mixtures of tertiary amine and organophosphorus acid and analysis of the interaction between the constituents of these mixtures, Hydrometallurgy, 155, pp. 44-50. https://doi.org/10.1016/j.hydromet.2015.04.013
  14. Liu, Y. and Lee, M. S., 2016 : Determination of viscosity and dielectric constant for studying the interactions in binary mixtures of organophosphorus acid and tertiary amine, Journal of Molecular Liquids, 222, pp. 233-238. https://doi.org/10.1016/j.molliq.2016.07.054
  15. Liu, Y. and Lee, M. S., 2016 : Effect of the diluents on the interaction between components in the binary mixtures of organophosphorus acid and tertiary amine, Journal of Molecular Liquids, 220, pp. 41-48. https://doi.org/10.1016/j.molliq.2016.04.067
  16. Liu, Y. and Lee, M. S., 2016 : Analysis of the interaction between organophosphorus acid and tertiary amine extractants in the binary mixtures by Fourier-Transform Infrared Spectroscopy (FT-IR), Solvent Extraction and Ion Exchange, 34, pp. 74-85. https://doi.org/10.1080/07366299.2015.1132059
  17. Liu, Y. and Lee, M. S., 2016 : Regeneration of a binary mixture of Cyanex 272 and Alamine 336 for the solvent extraction of rare earths elements by treatment with sodium hydroxide solution, Journal of Molecular Liquids, 219, pp. 411-416. https://doi.org/10.1016/j.molliq.2016.03.055