Journal of the Mineralogical Society of Korea (한국광물학회지)

The Mineralogical Society of Korea (한국광물학회)
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Application of Sulfate Solvent in Acid Bake-water Leaching System for Valuable Metal Leaching from Sulfide Mineral

황화광물로부터 유용금속 침출을 위한 Acid Bake-water Leaching System 내 황산염 용매제의 적용성

  • Ko, Chin Surk (Department of Energy and Resource Engineering, Chosun University) ;
  • Togtokhmaa, B. (Department of Energy and Resource Engineering, Chosun University) ;
  • Park, Cheon-Young (Department of Energy and Resource Engineering, Chosun University)
  • 고진석 (조선대학교 에너지.자원공학과) ;
  • 톡토흐마 (조선대학교 에너지.자원공학과) ;
  • 박천영 (조선대학교 에너지.자원공학과)
  • Received : 2018.03.02
  • Accepted : 2018.06.26
  • Published : 2018.06.30
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Abstract

The objective of this study was to investigate the application of sulfate solvents for the economic and eco-friendly leaching of valuable metals from Au concentrate using an acid bake-water leaching system (AWS). AWS experiments were performed using an electric furnace with various baking temperatures ($100-500^{\circ}C$) and sulfate solvents ($H_2SO_4$, $K_2SO_4$, $(NH_4)_2SO_4$, $MgSO_4$, and $CaSO_4$). The efficiency of the valuable metal leaching increased as the baking temperature was increased to $400^{\circ}C$. Based on the AWS leaching time experiments, the maximum leaching rate occurred with the aqueous $(NH_4)_2SO_4$ solvent. This study demonstrates that aqueous $(NH_4)_2SO_4$ could be used as an effective solvent for valuable metal leaching using an AWS.

본 연구는 acid bake-water leaching system (AWS)를 이용하여 Au 정광으로부터 경제적이고 친환경적인 유용금속 용출을 위하여 황산염 용매제의 적용성을 파악하는 것이다. AWS 실험은 전기로를 이용하여 다양한 baking 온도($100^{\circ}C{\sim}500^{\circ}C$)와 황산염 용매제($H_2SO_4$, $K_2SO_4$, $(NH_4)_2SO_4$, $MgSO_4$, $CaSO_4$) 조건에서 수행하였다. Baking 온도가 $400^{\circ}C$까지 증가할수록 유용금속의 용출률은 증가하였다. 용출시간에 따른 AWS 실험결과, 최대 용출률 조건은 $(NH_4)_2SO_4$ 용매제이었다. 본 연구를 통하여 $(NH_4)_2SO_4$ 용매제가 AWS를 이용한 유용금속 용출에 있어 효과적인 용매제로 사용가능함을 입증하였다.

Keywords

References

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