Investigation of the optimal technology for copper leaching from old flotation tailings of the copper mine bor (Serbia)
| Autor: | Vesna Conić, Branislav Marković, Jovica Stojanović, Srđan Stanković, Dragana Božić, Miroslav Sokić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Lixiviant
lcsh:TN1-997 Bacterial oxidation Materials science Mechanical Engineering Metals and Alloys chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Pulp and paper industry 01 natural sciences Tailings Copper Ferrous 020401 chemical engineering Copper extraction techniques chemistry Bioleaching copper extraction flotation tailings acid leaching bioleaching leaching with biogenic lixiviant Leaching (metallurgy) 0204 chemical engineering lcsh:Mining engineering. Metallurgy 0105 earth and related environmental sciences |
| Zdroj: | Metallurgical & Materials Engineering, Vol 26, Iss 2, Pp 209-222 (2020) |
| ISSN: | 2217-8961 |
| Popis: | This work aimed to investigate optimal leaching technology for copper extraction from old flotation tailings of the Copper Mine Bor. The leaching degree of copper after leaching with sulphuric acid at 80 °C was 50%, the maximal leaching degree was achieved after 30 minutes. Then, old flotation tailings were leached with adapted moderately thermophilic acidophilic bacteria in a bioreactor at 40 °C. Maximal leaching degree of 84% was achieved after nine days of the experiment. The third leaching experiment was conducted with biogenic lixiviant obtained by bacterial oxidation of the ferrous iron (concentration of Fe3+ 1300 mgL-1, pH 2.14). Biogenic lixiviant with ferric sulphate was then used in the leaching experiment at 80 °C. Maximal leaching degree was 78%, and it was achieved after five minutes. Results of the leaching experiments show that the most efficient technology for copper recovery from the old flotation tailings of the Copper Mine Bor was leaching with biogenic lixiviant. |
| Databáze: | OpenAIRE |
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