The effect of biochemical oxidation on the hydrometallurgical production of copper

Authors

  • Aigul Koizhanova Institute of Metallurgy and Ore Beneficiation, Satbyaev University, Almaty 050010, REPUBLIC OF KAZAKHSTAN
  • David Magomedov Institute of Metallurgy and Ore Beneficiation, Satbyaev University, Almaty 050010, REPUBLIC OF KAZAKHSTAN
  • Nurgali Abdyldayev Institute of Metallurgy and Ore Beneficiation, Satbyaev University, Almaty 050010, REPUBLIC OF KAZAKHSTAN
  • Maria Yerdenova Institute of Metallurgy and Ore Beneficiation, Satbyaev University, Almaty 050010, REPUBLIC OF KAZAKHSTAN
  • Akbota Bakrayeva Institute of Metallurgy and Ore Beneficiation, Satbyaev University, Almaty 050010, REPUBLIC OF KAZAKHSTAN

DOI:

https://doi.org/10.24036/teknomekanik.v6i1.16072

Keywords:

Copper heaps, Bio-oxidation, Acidobacillus Ferrooxidans bacteria, Leaching, solvent extraction

Abstract

The article presents the results of the use of the biochemical leaching method for copper-bearing non-commercial ore in a full hydrometallurgical cycle. The object of the study was the average copper-bearing ore of the Satbayev deposit, with an initial copper content of 0.26%. The experimental part of the full hydrometallurgical cycle included percolation leaching, extraction, and re-extraction tests, as well as electrodeposition tests and the production of finished cathode copper. Two variants of percolation leaching were performed as a comparison: a standard method using only sulfuric acid and a preliminary bacterial oxidation method for mineral raw materials with an adapted bacterial strain, Acidithiobacillus ferrooxidans. Percolation leaching experiments showed a significant reduction in sulfuric acid consumption when preliminary bacterial oxidation was used. Upon reaching the level of copper extraction from the ore of 86–87%, the final consumption of sulfuric acid for the standard leaching method was 15.5 kg per ton, while 9.4 kg per ton was required for the biochemical method. The productive solution obtained in the biochemical leaching process showed full suitability for all technological stages of hydrometallurgical copper production.

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References

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Published

2023-06-01

How to Cite

Koizhanova, A., Magomedov, D., Abdyldayev, N., Yerdenova, M., & Bakrayeva, A. (2023). The effect of biochemical oxidation on the hydrometallurgical production of copper. Teknomekanik, 6(1), 12–20. https://doi.org/10.24036/teknomekanik.v6i1.16072

Issue

Vol. 6 No. 1 (2023): Regular Issue

Section

Research Articles

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Copyright (c) 2023 Aigul Koizhanova, David Magomedov, Nurgali Abdyldayev, Maria Yerdenova, Akbota Bakrayeva (Author)

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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