Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Separation Properties of Sm/Nd with Karr Column

Karr column을 이용한 Sm/Nd 분리특성

  • Eom Hyoung-Choon (Mineral & Materials Processing Division, Korea Institute of Geoscience Mineral Resources) ;
  • Lee Jin-Young (Mineral & Materials Processing Division, Korea Institute of Geoscience Mineral Resources) ;
  • Kim Sung-Don (Mineral & Materials Processing Division, Korea Institute of Geoscience Mineral Resources) ;
  • Park Kye-Sung (Mineral & Materials Processing Division, Korea Institute of Geoscience Mineral Resources) ;
  • Kim Jun-Soo (Mineral & Materials Processing Division, Korea Institute of Geoscience Mineral Resources)
  • 엄형춘 (한국지질자원연구원 자원활용소재연구부) ;
  • 이진영 (한국지질자원연구원 자원활용소재연구부) ;
  • 김성돈 (한국지질자원연구원 자원활용소재연구부) ;
  • 박계성 (한국지질자원연구원 자원활용소재연구부) ;
  • 김준수 (한국지질자원연구원 자원활용소재연구부)
  • Published : 2005.12.01
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Abstract

In this study, the separation of samarium to neodymium with Karr column was investigated. Separation properties of Sm/Nd binary system was estimated with experimental parameters such as flow rate, initial pH of aqueous phase, saponification of PC88A in organic phase and agitation speed. The extraction rate and distribution coefficient increased with increasing initial pH of aqueous phase at 16.5 ml/min(retention time 10 minute) of flow rate of organic and aqueous phase, and equilibrium pH of aqueous phase after extraction was maintained at 1.5 by saponified PC88A. Also, the extraction rate and distribution coefficient were drastically increased with increasing saponification degree of PC88A and agitation speed, and optimal saponification degree was $40\%$. Extraction rate of Nd and Sm was $19.6\%$ and $72.5\%$ respectively at retention time 10 minute, initial pH 1, saponification degree $40\%$ and agitation speed 120 rpm.

본 연구는 Karr column을 이용한 희토류원소의 분리에 대한 연구로서, 유량, 수상의 초기 pH, 유기상인 PC88A비누화도, 교반속도 등의 변수에 따른 Sm/ND이성분계의 분리특성을 조사하였다. 수상과 유기상의 유량이 16.5ml/min(체류시간 10분)에서 수상의 초기 pH가 높아짐에 따라 Sm/Nd의 추출율 및 분리계수가 증가하였으며, 비누화의 영향으로 반응 후 수상의 평형 pH가 약 1.5정도로 유지되었다 또한 PC88A 비누화도가 증가함에 따라 추출율 및 분리계수가 증가하였으며 적정 비누화도는 $40\%$였다. 그리고 교반 모터의 회전수 증가에 의해 추출율 및 분리계수가 크게 증가하는 결과를 보였다. 체류시간 10분, 초기 pH 1, PC88A비누화도 $40\%$,교반속도 120rpm에서 Nd $19.6\%$, Sm $72.5\%$가 추출되었다.

Keywords

References

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