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Extraction/Separation of Cobalt by Solvent Extraction: A Review

용매추출에 의한 코발트 분리 기술

  • Swain, Basudev (Institute for Advanced Engineering, Advanced Materials & Processing Center) ;
  • Cho, Sung-Soo (Institute for Advanced Engineering, Advanced Materials & Processing Center) ;
  • Lee, Gae Ho (Department of Chemistry, Chungnam National University) ;
  • Lee, Chan Gi (Institute for Advanced Engineering, Advanced Materials & Processing Center) ;
  • Uhm, Sunghyun (Institute for Advanced Engineering, Advanced Materials & Processing Center)
  • ;
  • 조성수 (고등기술연구원 신소재공정센터) ;
  • 이계호 (충남대학교 화학과) ;
  • 이찬기 (고등기술연구원 신소재공정센터) ;
  • 엄성현 (고등기술연구원 신소재공정센터)
  • Received : 2015.11.13
  • Accepted : 2015.11.18
  • Published : 2015.12.10

Abstract

Extraction/separation of cobalt by solvent extraction is reviewed. Separation of cobalt using various reagents and also cobalt recovery from scrap using commercial extractant were analyzed. The separation ability for cobalt followed the order of phosphinic > phosphonic > phosphoric acid due to the increasing stabilization of tetrahedral coordination of cobalt complexes with the extractant in the organic phase. Depending upon the solution composition, commercial extractants like Cyanex 272, D2EPHA and PC 88A should primarily be used for commercial extraction processes and also the efficient management of their combination could address various separation issues associated with cobalt bearing scrap.

Keywords

solvent extraction;cobalt;hydrometallurgy;resources recycling;commercial extractant

Acknowledgement

Supported by : Ministry of Environment

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