The effects of bioleaching conditions on the nonferrous metals content in copper-zinc concentrate
- Authors: Fomchenko N.V.1, Muravyov M.I.1
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Affiliations:
- Winogradsky Institute of Microbiology
- Issue: Vol 53, No 4 (2017)
- Pages: 448-452
- Section: Article
- URL: https://journal-vniispk.ru/0003-6838/article/view/152270
- DOI: https://doi.org/10.1134/S0003683817040056
- ID: 152270
Cite item
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.
About the authors
N. V. Fomchenko
Winogradsky Institute of Microbiology
Author for correspondence.
Email: natalya.fomchenko@gmail.com
Russian Federation, Moscow, 119071
M. I. Muravyov
Winogradsky Institute of Microbiology
Email: natalya.fomchenko@gmail.com
Russian Federation, Moscow, 119071
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