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양극슬라임으로부터 무기침출제에 의한 금과 은의 침출
Leaching of Gold and Silver from Anode Slime with Inorganic Reagents 원문보기

資源리싸이클링 = Journal of the Korean Institute of Resources Recycling, v.26 no.1, 2017년, pp.30 - 36  

행위동 (목포대학교 신소재공학과) ,  이기웅 ((주)성일하이텍) ,  이만승 (목포대학교 신소재공학과)

초록
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양극흙에 함유된 금과 은을 회수하기 위해 무기산(염산, 질산, 황산)과 thiourea 및 thiosulfate에 의한 침출실험을 수행했다. 산화제를 첨가하지 않은 조건에서 금은 무기산용액에 전혀 용해되지 않았다. 3종류의 무기산의 농도가 동일한 조건에서 황산용액에서 은의 침출율이 가장 높았으며, 염산의 농도가 증가함에 따라 $AgCl_2{^-}$의 형성에 따라 은의 침출율이 증가하였다. 한편 주석은 질산용액에 전혀 용해되지 않았으나, 구리, 니켈과 아연은 본 실험조건에서 모두 용해되었다. 황산과 thiourea의 혼합용액에서 금과 은은 모두 용해되었다. Thiosulfate용액에 은의 일부가 용해되었으나, 금은 전혀 용해되지 않았다.

Abstract AI-Helper 아이콘AI-Helper

Leaching experiments of anode slime were performed with several inorganic acids (HCl, $HNO_3$ and $H_2SO_4$) together with thiourea and thiosulfate solution to recover gold and silver. Gold was not dissolved at all into these inorganic acids in the absence of any oxidizing agen...

주제어

AI 본문요약
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제안 방법

  • In order to investigate the appropriate leaching methods to recover gold and silver from the anode slime, inorganic acids such as hydrochloric acid, nitric acid and sulfuric acid as well as thiosulfate and thiourea were employed in this work. The leaching behavior of gold and silver as well as other metal present in the anode slime was mainly discussed.
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참고문헌 (34)

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