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Improvement of modes and circuits of bacterial leaching of sulfide concentrates

  • Mineral Processing of Nonferrous Metals
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Abstract

These studies are devoted to the effect of the feed circuit of a series of chemostats on the characteristics of bacterial leaching of sulfide concentrates. The parameters and modes of the process are investigated at a laboratory installation consisting of five operating reactors, each with an active volume of 1.5 l and a conditioning tank. The initial material was a gold-bearing arsenical pyrite flotation concentrate containing Au, Ag, and As, as well as a specially adapted bacterial strain, namely, Acidithiobacillus ferrooxidans. It is established that double-flow feeding of a series of chemostats makes it possible to increase the leaching yield up to a 70% excess of the critical rate of dilution under the single-flow feeding mode at the same degree of oxidation of output sulfide minerals.

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Authors and Affiliations

  1. Moscow Institute of Steel and Alloys (National Research Institute of Technology), Leninskii pr. 4, Moscow, 119049, Russia

    E. V. Adamov, L. N. Krylova & A. V. Kanarsky

Authors
  1. E. V. Adamov
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  2. L. N. Krylova
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  3. A. V. Kanarsky
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Corresponding author

Correspondence to E. V. Adamov.

Additional information

Original Russian Text © E.V. Adamov, L.N. Krylova, A.V. Kanarsky, 2010, published in Izvestiya VUZ. Tsvetnaya Metallurgiya, 2010, No. 3, pp. 3–6.

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Adamov, E.V., Krylova, L.N. & Kanarsky, A.V. Improvement of modes and circuits of bacterial leaching of sulfide concentrates. Russ. J. Non-ferrous Metals 51, 201–204 (2010). https://doi.org/10.3103/S1067821210030016

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  • DOI: https://doi.org/10.3103/S1067821210030016

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