The effects of bioleaching conditions on the nonferrous metals content in copper-zinc concentrate |
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| Authors: | N.?V.?Fomchenko mailto:natalya.fomchenko@gmail.com" title=" natalya.fomchenko@gmail.com" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,M.?I.?Muravyov |
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| Affiliation: | 1.Winogradsky Institute of Microbiology,Research Center of Biotechnology of the Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | ![]()
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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