Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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The Possibility of Gold Recovery from the Iron-Hydroxide in the Acid Mine Drainage by Lead-Fire Assay

납-시금법을 이용한 산성광산배수 철수산화물로부터 Gold 회수 가능성 연구

  • Cho, Kang-Hee (Department of Energy and Resource Engineering, Chosun University) ;
  • Kim, Bong-Ju (Department of Energy and Resource Engineering, Chosun University) ;
  • Kim, Jin-Hyung (GOLDEN SUN) ;
  • Choi, Nag-Choul (Department of Rural Systems Engineering/Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Park, Cheon-Young (Department of Energy and Resource Engineering, Chosun University)
  • 조강희 (조선대학교 에너지자원공학과) ;
  • 김봉주 (조선대학교 에너지자원공학과) ;
  • 김진형 (골든썬(주)) ;
  • 최낙철 (서울대학교 지역시스템공학과) ;
  • 박천영 (조선대학교 에너지자원공학과)
  • Received : 2013.07.29
  • Accepted : 2013.12.09
  • Published : 2013.12.28
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Abstract

In order to recover gold from iron-hydroxide in acid mine drainage, a lead-fire assay has been used. Acid mine drainage is generated from mining waste rocks, and iron-hydroxide precipitates from acid mine drainage, which severely contaminates the area surrounding the mine. Iron-hydroxide samples contain on average 520.29 mg/kg of Fe, 4,414.62 mg/kg sulfur, and 16.19 mg/kg Au. In an XRD analysis, quartz and goethite were observed along with the iron-hydroxide. Using a lead-fire assay, the recovery of pure gold was on average 0.174 g/ton from the iron-hydroxide, whereas the gold not recovered in the process was on average 1.37 mg/kg. This unrecovered gold was lost to the glass slag due to the galena and lead formation. The galena and lead in the glass slag was identified through XRD.

산성광산배수로부터 형성되는 철수산화물로부터 납-시금법을 이용하여 금을 회수하고자하였다. 폐광석으로부터 산성광산배수가 생성되고 있으며 이로부터 철수산화물이 침전되어 주변지역이 심각하게 오염되고 있다. 철수산화물에는 Fe가 평균 520.29 mg/kg, 황이 평균 4,414.62 mg/kg 그리고 금이 평균 16.19 mg/kg이 각각 포함되어 있다. 철수산화물에 대하여 XRD분석을 수행한 결과 석영과 침철석이 나타났다. 철수산화물에 대하여 납-시금법을 수행한 결과 평균 0.174 g/ton의 순수한 금을 회수 하였고, 유리질 슬래그로 평균 1.37 mg/kg의 금이 손실되었다. 유리질 슬래그로 금이 손실되는 원인은 유리질 슬래그에 방연석과 납이 형성되었기 때문이다. 유리질 슬래그에 방연석과 납이 포함되어 있는 것을 XRD분석으로 확인하였다.

Keywords

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