Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Development of Ammoniacal Leaching Processes; A Review

암모니아 침출공정(浸出工程) 기술개발(技術開發) 동향(動向)

  • Yoo, Kyoungkeun (Department of Energy & Resources Engineering, Korea Maritime University) ;
  • Kim, Hyunjung (Department of Mineral Resources & Energy Engineering, Chonbuk National University)
  • 유경근 (한국해양대학교 에너지자원공학과) ;
  • 김현중 (전북대학교 자원에너지공학과)
  • Received : 2012.07.16
  • Accepted : 2012.09.25
  • Published : 2012.10.30
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Abstract

Selective leaching processes for copper, gold, nickel, and cobalt have been investigated because there is an advantage of ammoniacal hydrometallurgy that metal such as copper could be selectively extracted restricting the dissolution of iron or calcium. In the present article, the studies for selective ammoniacal leaching of copper from motor scraps and waste printed circuit boards (PCBs), for ammoniacal leaching of gold to decrease the amount of cyanide used or to substitute cyanide by thiosulfate, and for ammoniacal leaching to recover nickel and cobalt from nickel oxide ore and intermidiate obtained from manganese nodule treatment process were summarized and further studies were proposed for domestic technology development for ammoniacal hydrometallurgy processes.

암모니아 습식제련공정은 철과 칼슘의 용해를 억제하며 구리 등의 금속을 선택적으로 침출이 가능한 장점이 있어 구리, 금, 니켈 및 코발트 등의 금속을 선택적으로 침출하기 위한 연구가 수행되어왔다. 이 글에서는 모터스크랩과 폐인쇄회로기판으로부터 구리의 선택적 침출, 티오황산염 사용 등 시안의 대체 및 저감을 위한 금의 암모니아침출, 산화니켈광 및 망간단괴처리공정 중간산물로부터 니켈과 코발트를 회수하기 위한 암모니아침출 기술개발동향을 정리하고 국내 연구개발방향을 제시하고자 하였다.

Keywords

References

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