Electrochemical aspects of sphalerite dissolution in the presence and absence of chalcopyrite

被引:0
|
作者
Yelloji Rao, M.K.
Natarajan, K.A.
机构
来源
Minerals and Metallurgical Processing | 1989年 / 6卷 / 01期
关键词
Copper Ore Treatment--Electrochemistry - Flotation - Hydrogen ion concentration - Hydrometallurgy - Mineralogy--Sulfides and sulfosalts;
D O I
10.1007/bf03402522
中图分类号
学科分类号
摘要
The electrochemistry of sphalerite and chalcopyrite was investigated under both open-circuit and applied potential conditions. Emphasis was placed on the selective dissolution of sphalerite from a mixture of sphalerite-chalcopyrite flotation concentrates as a function of applied potential, acid concentration, pulp density, and time. Morphological studies using a scanning electron microscope were also carried out with chemically leached, galvanically leached, and unleached surfaces of sphalerite and chalcopyrite. Selective dissolution of sphalerite could be achieved if the mixed chalcopyrite-sphalerite concentrate slurry was maintained at a negative applied potential of -0.4V (SCE). Probable mechanisms involved in the selective dissolution of zinc are discussed.
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页码:29 / 35
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