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NTIS 바로가기韓國鑛物學會誌 = Journal of the Mineralogical Society of Korea, v.29 no.3, 2016년, pp.113 - 122
김봉주 (조선대학교 에너지.자원공학과) , 조강희 (서울대학교 지역시스템공학과) , 최낙철 (서울대학교 지역시스템공학과) , 박천영 (조선대학교 에너지.자원공학과)
This study aims to improve the recovery of gold and silver by removing hematite from gold ore of an oxidation zone with ammonia solution. Quartz, hematite and muscovite were present in the oxidation zone, while hematite was hydrogenous. As a result of performing an ammonia leaching test on variables...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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암모니아가 유용금속 용출의 용매제로 사용하는 가장 큰 이유는 무엇인가? | 암모니아가 이와 같이 유용금속 용출의 용매제로 사용하는 이유는 비용이 저렴하고, 효율이 매우 뛰어나며, 낮은 독성과 부식성, 그리고 용해성의 금속 복합물을 형성하는 능력이 뛰어나기 때문이다. 그리고 무엇보다 암모니아는 Fe를 용출시켜 침철석이나 적철석으로 침전시키는 능력이 뛰어나기 때문이다 (Beckstead and Miller, 1977; Ghosh et al., 1990, 2002, 2003). | |
산화대가 Fe 함량 및 금의 품위 또한 부화대나 광화대에 비하여 상대적으로 높게 나타나는 이유는 무엇인가? | 산화대는 산성수에 의하여 용해성 금속과 황이 용탈되어 제거되기 때문에 금속 함량은 낮은 반면에 철수산화물의 형성으로 인하여 Fe 함량 및 금의 품위 또한 부화대나 광화대에 비하여 상대적으로 높게 나타난다(De oliveira and De oliveira, 2000; Hartley and Rice, 2005; Atapour and Atiabi, 2007; Belogub et al., 2008; Velasco et al. | |
산화대에 존재하는 gold가 부유선별이 어려운 이유는 무엇인가? | , 2013). 그러나 산화대에 존재하는 gold는 철수산화물로 피복되어 있기 때문에 부유선별이 어렵다. 그러므로 황화광물과 맥석광물을 부유선별 하는 과정에서, 산화대 광석, 즉 철수산화물이 많은 광석이 부유선별에 공급되기 때문에 황화광물의 부선효율이 떨어진다. |
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