전기분해법을 이용한 금정광내 Te 회수 특성

In order to obtain pure metallic Te from gold concentrate, roasting treatment, hypochlorite leaching, Fe removal and electrolysis experiments were carried out. The contents of Au, Ag and Te from the concentrate sample and roasted sample were much more soluble in the hypochlorite solution than in aqu...

Full description

Saved in:
Bibliographic Details
Published in자원환경지질 Vol. 47; no. 6; pp. 645 - 655
Main Authors 김봉주(Bong-Ju Kim), 조강희(Kang-Hee Cho), 조지유(Ji-Yu Jo), 최낙철(Nag-Choul Choi), 박천영(Cheon-Young Park)
Format Journal Article
LanguageKorean
Published Korea Society Of Economic&Environmental Geology 30.12.2014
대한자원환경지질학회
Subjects
Online AccessGet full text
ISSN1225-7281
2288-7962
DOI10.9719/EEG.2014.47.6.645

Cover

More Information
Summary:In order to obtain pure metallic Te from gold concentrate, roasting treatment, hypochlorite leaching, Fe removal and electrolysis experiments were carried out. The contents of Au, Ag and Te from the concentrate sample and roasted sample were much more soluble in the hypochlorite solution than in aqua regia digestion, whereas the metals Pb, Zn, Fe and Cu were easier to leach with the aqua regia than the hypochlorite. With the addition of NaOH in the hypochlorite leaching solution prior to electrolysis, the Fe removal rate achieved was only 96% in the concentrate sample, while it reached 98% in the roasted sample. The results of electrolysis for 240 min, 98% of the metallic copper was recovered from the concentrate sample, while 99% was obtained from the roasted sample due to the removal of S by roasting. The amount of anode slime was also greater in the electrolytic solution with the roasted sample than with the concentrate sample. The results on the anode slime after the magnetic separation process showed the amount of metallic pure native tellurium recovered was greater in the roasted sample than in the concentrate sample. 금 정광으로부터 순수한 금속 형태의 Te을 얻기 위하여 소성처리, 차아염소산 용출, Fe 제거 및 전기분해실험을 수행하였다. 정광 및 소성시료에 포함되어 있는 Au, Ag 및 Te는 왕수보다 차아염소산에서 더 많이 용해된 반면에 Pb, Zn, Fe 및 Cu는 차아염소산보다는 왕수에서 더 많이 용출되었다. 전기분해하기 전, 차아염소산 용출-용액에 NaOH를 첨가한 결과 Fe가 정광시료에서 96% 제거되었지만 소성시료에서는 98% 제거되었다. 전기분해실험을 240분 동안 수행한 결과, 금속 구리가 정광시료에서 98% 회수된 반면에 소성시료에서 99%나 회수되었다. 이는 소성처리에 의하여 S가 제거되었기 때문이다. 양극 슬라임도 정광시료보다 소성시료의 전해질 용액에서 더 많이 생성되었다. 양극 슬라임을 자력선별한 결과 순수한 자연금속 형태의 텔루륨이 정광시료보다 소성시료에서 더 많이 회수되었다.
Bibliography:KISTI1.1003/JNL.JAKO201402755362257
G704-000218.2014.47.6.002
ISSN:1225-7281
2288-7962
DOI:10.9719/EEG.2014.47.6.645