Bioleaching of Non-Ferrous Metals from Arsenic-Bearing Sulfide Concentrate
| Autor: | Aleksandr Bulaev, V. S. Melamud, Anna Boduen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
chemistry.chemical_classification Materials science Bearing (mechanical) Sulfide Biohydrometallurgy 030106 microbiology Metallurgy chemistry.chemical_element engineering.material Condensed Matter Physics Atomic and Molecular Physics and Optics Ferrous law.invention 03 medical and health sciences 030104 developmental biology chemistry Tennantite law Bioleaching engineering General Materials Science Arsenic |
| Zdroj: | Solid State Phenomena. 299:1064-1068 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.299.1064 |
| Popis: | Tank bioleaching of substandard arsenic-bearing sulfide copper–zinc concentrate, containing 1.70, 6.22, and 7.30% of arsenic, copper, and zinc, was performed. The concentrate contained pyrite, chalcopyrite, tennantite, and sphalerite. Bioleaching was performed at 40°C using a mixed culture of acidophilic microorganisms in two modes. In the first mode, pulp density was 10%, while in the second it comprised 15%. Bioleaching made it possible to extract 17 and 70% of copper and zinc in the first mode, and 15 and 72% of copper and zinc in the second mode. The results obtained that bioleaching can be an effective approach to remove zinc from substandard copper-zinc concentrates. At the same time, copper minerals, including arsenic-bearing mineral tennantite, may be comparatively resistant to bioleaching, so requires the development of novel hydrometallurgical approaches for effective processing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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