黃砒鐵鑛과 方鉛鑛의 混合黃化鑛의 알카리酸化에 의한 Pb浸出
Dissolution of Pb from the Complex Sulphide Concentrates Containing Galena and Arsenopyrite by Alkaline Oxidative Leaching
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초록
침출온도 100˚C~140˚C, 산소압력 40psi~100psi, NaOH농도 0.5M~2M 범위의 침출조건에서 황비철광과 방연광의 혼합황화광의 알카리산화에 의한 Pb 침출실험이 수행되었다. 혼합황화광중의 방연광침출에는 침출용액중의 OH-농도가 큰 영향을 미치며 낮은 OH-농도의 침출용액에서는 침출반응의 진행에 따른 OH- 저하에 의하여 침출된 HPbO₂-가 화합물로 다시 석출이 일어나서 침출율을 저하시킬 수 있다. 침출온도 120˚C, 산소압력 100psi, 침출시간 30분, NaOH 2M의 침출조건에서 처리한 침출잔사 중의 Pb함량이 가장 낮은 결과를 얻었다.
Abstract
In this work, the dissolution behavior of Pb from the complex sulphide concentrates containing Galena and Arsenopyrite by alkaline oxidative leaching was studied. The influences of leaching temperature, oxygen partial pressure, leaching time and NaOH concentration of leaching solution were examined at the leaching conditions in the range of 100˚C~140˚C temperature, 40psi~100psi PO₂ and 0.5M~2M NaOH concentration. The optimum result was obtained at the leaching condition of leaching temperature 120˚C, 100psi PO₂, leaching time 30min. and 2M NaOH concentration of leaching solution.
참고문헌 (11)
- Alkaline oxidative leaching of gold-bearing arsenopyrite ores, "Bhakta, P.", United States, Bureau of Mines, ~ (1989)
- Linge, H. G, "Gold recovery from a refractory arsenopyrite (FeAsS) concentrate by in-situ slurry oxidation", Minerals engineering, 10(6), pp.557~566 (1997)
- Fernandez, P. G, "Oxidation of arsenopyrite (FeAsS) in acid Part I: reactivity of arsenopyrite", Journal of applied electrochemistry, 26(6), pp.575~583 (1996)
- Fernandez, P. G ., "Oxidation of arsenopyrite (FeAsS) in acid Part II: stoichiometry and reaction scheme", Journal of applied electrochemistry, 26(6), pp.585~591 (1996)
- Jones, R. A., "Surface alteration of arsenopyrite (FeAsS) by Thiobacillus ferrooxidans", Geochimica et cosmochimica acta, 67(5), pp.955~965 (2003)
- Achimovicova, M., "Influence of mechanical activation on selectivity of acid leaching of arsenopyrite", Hydrometallurgy, 77(1, pp.2) (2005), 3~7
- Zhang, S., "Dissolution kinetics of galena in acid NaCl solutions at 25-75oC", Applied geochemistry: journal of the International Association of Geochemistry and Cosmochemistry, 19(6), pp.835~841 (2004)
- Wadsworth, M. E., "Sulfide and metal leaching reactions", Transactions of the American Institute of Mining, Metallurgical, and Petroleum Engineers, Society, 278, pp.557~562 (1985)
- Cisneros-Gonzalez, I., "An electrochemical study of galena concentrate in perchlorate medium at pH 2.0: the influence of chloride ions", Electrochimica acta, 45(17), pp.2729~2741 (2000)
- Panin, V. V., "Mechanism and Kinetics of Bacterial Oxidation of Sulfide Minerals", Paper in Proceedings of the International Seminal on Biotechnology of Metals, pp.197~215 (1985)
- Robert, M., Garrels, "Solutions, Minarals, and Equilibria", pp.236~ (1965), Harper & Row Publishers