Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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A Study on the Selective Leaching of the Copper Component by Sulfation Process

황산화 배소법에 의한 구리성분의 선택적 침출연구

  • Kim, Woo Jin (Energy&Resources Engineering, Chonnam National Univ.) ;
  • Kim, Joon Soo (Energy&Resources Engineering, Chonnam National Univ.) ;
  • Kim, Myong Jun (Energy&Resources Engineering, Chonnam National Univ.) ;
  • Tran, Tam (Energy&Resources Engineering, Chonnam National Univ.) ;
  • Lee, Jin-Young (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Shin, Shun-Myung (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
  • 김우진 (전남대학교 에너지자원공학과) ;
  • 김준수 (전남대학교 에너지자원공학과) ;
  • 김명준 (전남대학교 에너지자원공학과) ;
  • ;
  • 이진영 (한국지질자원연구원) ;
  • 신선명 (한국지질자원연구원)
  • Received : 2016.09.12
  • Accepted : 2016.10.21
  • Published : 2016.10.31
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Abstract

This study were carried out sulfation roasting and selective leaching test for the effective recovery of copper component in concentrate obtained by froth floatation of Autrallian low grade copper ore. The optimum conditions of sulfation roasting were temp. $450^{\circ}C$, $Na_2SO_4$ 2 mole ratio and time 1.5 h, and then selective leaching were room temperature and $H_2O$ or 1M $H_2SO_4$ solutions. Leaching efficiency of optimum sulfation product were 90 wt.% of copper, 20 wt.% of iron and 15wt.% of nickel elements. In this results, it was possible to selective decomposition leaching of the copper component under optimum conditions in this research.

본 연구는 호주산 저품위 동광의 선광실험결과로 얻은 고품위 광물의 황산화 배소 및 선택적 침출반응 조건 확립을 통해 유가 광물 중에 함유된 성분을 선별적으로 용해해냄으로써 철 성분을 비롯한 불순물을 줄이거나, 동 및 니켈 성분을 용해 혹은 잔사에 잔류시킴으로써 유가금속회수를 효과적으로 회수하고자 하는데 목적이 있다. 본 연구실험결과 얻은 최적조건은 황산화 배소시 $450^{\circ}C$, $Na_2SO_4$ 2 mole ratio 및 1.5 h이었고, 배소산물의 침출온도는 상온 및 침출제는 $H_2O$ 혹은 1M $H_2SO_4$이었다. 최적조건 하에서 Cu 성분은 90 wt.% 침출율을 Fe성분은 20 wt.%내외, Ni성분은 15 wt.% 정도를 나타내는 것으로 보아 선택적 분해침출이 가능하다.

Keywords

References

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