The effects of bioleaching conditions on the nonferrous metals content in copper-zinc concentrate

被引：0
|
作者：
N. V. Fomchenko
M. I. Muravyov
机构：
[1] Research Center of Biotechnology of the Russian Academy of Sciences,Winogradsky Institute of Microbiology
来源：
Applied Biochemistry and Microbiology | 2017年 / 53卷
关键词：
leaching; acidophilic microorganisms; biohydrometallurgy; nonferrous metals; sulfide concentrate;
D O I：
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中图分类号：
学科分类号：
摘要：
The effects of pH and ferrous iron concentration in cultural medium on the bioleaching of copper-zinc concentrate by mesophilic and moderately thermophilic acidophilic microorganisms were studied. It was revealed that the optimum pH for bioleaching in presence of 5 g/L of ferrous iron was 1.4–1.5. It was shown that bioleaching under optimal conditions led to an increase in the copper content in solid phase from 10.1 to 14% and a decrease in the zinc content from 7.4 to 1.4%. The results of the present work demonstrate that acidophilic microorganisms can be used for treatment of complex sulfide concentrates containing copper and zinc.
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页码：448 / 452
页数：4
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