2025 - Sustainable Industrial Processing Summit
SIPS2025 Volume 11. Intl. Symp on Iron and Steel, Non-ferrous, Metals, Bioextraction, Molten and Recycling
| Editors: | F. Kongoli, P. Assis, R. Alvarenga, J.A. de Castro, B. Deo, W.F. Santos Jr., S.L. de Andrade, GS. Mahobia, T. Usui, J. Antrekowitsch, A. Charitos, C. Oosterhof, M. Stelter, Z. Wang, A. Dmitriev, M.C. Gomez Marroquin, Y. Gordon, M. Naimanbayev, S. Prakash, V. Tsepelev |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2025 |
| Pages: | 298 pages |
| ISBN: | 978-1-998384-58-7 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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EXTRACTION OF COPPER FROM LOW-GRADE ORE BY BIO-OXIDATION PROCESSES
Akbota Bakrayeva1;1"INSTITUTE OF METALLURGY AND ORE BENEFICIATION" JSC, Almaty, Kazakhstan;
Type of Paper: Regular
Id Paper: 280
Topic: 3
Abstract:
Obtaining the best results in the processing of low-quality copper-containing raw materials requires comprehensive research, including the study of the bio-leaching process, as well as the influence of the composition of the culture fluid and the physico-mechanical characteristics of the starting material on this process. Based on the data obtained, more efficient methods of extracting copper from low-quality mineral and man-made materials will be developed. Bacterial biomass was built up using various amino acids such as meat peptone agar, meat peptone broth, adapted to the composition of the copper dump, in a bioreactor /fermenter in compliance with predefined parameters. The growth and development of A. Ferrooxidans bacteria is characterized by a change in the parameters of the biological solution, such as a significant decrease in the concentration of 〖Fe〗(2+) and an increase in the level of 〖Fe〗(3+) ions. In addition, some strains of A. Ferrooxidans, adapted to the presence of copper in solution, can effectively leach sulfides, including copper sulfides.