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- Title
Analysis of Waste Quality for Two-Step Biohydrometallurgical Processing of Copper–Zinc Concentrate.
- Authors
Fomchenko, N. V.; Muravyov, M. I.
- Abstract
Iron and non-ferrous metals has been shown to accumulate in the liquid phase during the two-step biohydrometallurgical treatment of copper–zinc concentrate. The removal of iron as a precipitate from a solution obtained after ferric leaching of the concentrate and its subsequent bioregeneration has been studied. Iron was almost completely (98.3%) removed from the liquid phase as jarosite, and the pH value increased up to 2.4 with the addition of lime. About 95% of non-ferrous metals remained in the solution as sulfates. Comparative analysis of the obtained precipitates (including waste from the two-step process) showed that the loss of non-ferrous metals for them was lower than that in waste from the mining of copper–zinc ores and copper smelters.
- Subjects
BACTERIAL leaching; IRON; SEWAGE purification; COPPER ores; ZINC ores; PRECIPITATION (Chemistry); JAROSITE; ACIDOPHILIC bacteria; WASTE management
- Publication
Applied Biochemistry & Microbiology, 2019, Vol 55, Issue 1, p48
- ISSN
0003-6838
- Publication type
Article
- DOI
10.1134/S0003683819010058