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韓國鑛物學會誌 = Journal of the Mineralogical Society of Korea, v.27 no.4, 2014년, pp.207 - 222
김봉주 (조선대학교 에너지.자원공학과) , 조강희 (조선대학교 에너지.자원공학과) , 최낙철 (서울대학교 지역시스템공학과) , 박천영 (조선대학교 에너지.자원공학과)
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In order to recover the metallic copper powder from the mine-waste rock, heap bioleaching, Fe removal and electrowinning experiments were carried out. The results of heap leaching with the mine-waste rock sample containing 0.034% Cu showed that, the leaching rate of Cu were 61% and 62% in the bacter...
| 핵심어 | 질문 | 논문에서 추출한 답변 |
|---|---|---|
| 폐-광석으로부터 금속구리분말을 회수하기 위해 무엇을 하였는가? | 폐-광석으로부터 금속구리분말을 회수하기 위하여 더미 미생물용출, Fe 제거와 전기분해실험을 수행하였다. Cu가 0. | |
| Cu 용출률은 어떻게 나타났는가? | Cu가 0.034% 함유된 폐-광석시료에 대하여 더미 용출실험을 수행한 결과, Cu 용출률은 박테리아 용출-용액에서 61%, 황산 용출-용액에서 62%로 나타났다. Fe를 효과적으로 제거하기 위하여 더미 용출-용액에 NaOH, $H_2O_2$ 및 $Ca(OH)_2$를 각각 적용한 결과 $H_2O_2$가 가장 효과적인 Fe 제거제로 선정되었다. | |
| 채광활동을 수행하는 과정에서 무엇이 생성되는가? | 지하의 유용금속을 회수하기 위하여 지하 및 지상에서 채광활동을 수행한다. 채광활동 과정에서 생성된 폐광석, 저품위광석, 광미(talling) 등이 광산주변에 대규모 더미(heap)로 방치되어 있다. 이렇게 대규모로 적치된 이들 더미로부터 소량의 황화광물이 남아있기 때문에 중금속이온이 방출되고 있어 광산주변 생태계가 오염되고 있다(Torma, 1984). |
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