Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Solvent Extraction for the Separation of Nd and Pr from Chloride Leaching Solution of Monazite Sand

모나자이트 샌드의 염산침출용액으로부터 용매추출에 의한 Nd와 Pr의 분리

  • Park, Ju-Ho (Department of Advanced Materials Science & Engineering, Mokpo National Univ.) ;
  • Jeon, Ho-Seok (Division of Minerals Utilization and Materials, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Man-Seung (Department of Advanced Materials Science & Engineering, Mokpo National Univ.)
  • 박주호 (목포대학교 신소재공학과) ;
  • 전호석 (한국지질자원연구원 광물자원연구본부) ;
  • 이만승 (목포대학교 신소재공학과)
  • Received : 2013.08.19
  • Accepted : 2013.09.23
  • Published : 2014.02.28
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Abstract

Solvent extraction experiments have been performed to separate Nd and Pr from chloride leaching solution of monazite sand using PC88A and D2EHPA. For this purpose, the effect of the saponification of PC88A and D2EHPA on the extraction and separation of the two metals were studied by varying the pH of aqueous solution. In the experimental ranges conducted in this study, the distribution coefficients of Nd were higher than those of Pr and separation factor value increased with the increase of solution pH. Saponification of PC88A enhanced the distribution coefficients of Nd and Pr as well as the separation factor. Saponification of D2EHPA had some effect on the extraction of the two metals but little effect on the separation factor.

Nd와 Pr이 함유된 모나자이트 샌드의 염산 침출용액에서 PC88A와 D2EHPA를 사용하여 두 금속을 분리하기 위한 용매추출실험을 수행하였다. 이러한 목적을 위해 수상의 pH에 따른 PC88A와 D2EHPA의 비누화가 두 금속의 추출 및 분리에 미치는 영향을 조사하였다. 본 연구에서 수행한 실험조건에서 Nd의 분배계수가 Pr의 분배계수보다 크며, 수상의 pH가 높을수록 분리인자가 증가하였다. PC88A에 비해 비누화시킨 PC88A로 추출하는 경우 분배계수와 분리인자 모두 증가하였다. D2EHPA의 비누화율은 두 금속의 추출에는 영향을 미치지만, 분리인자에는 큰 변화가 없었다.

Keywords

References

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