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Options for Increasing the Rate of Bioleaching of Arsenic Containing Copper Concentrate.
- Source :
- Microbiology Research; Sep2022, Vol. 13 Issue 3, p466-479, 14p
- Publication Year :
- 2022
-
Abstract
- In the present work the effect of alkaline sulfide leaching (ASL) on the extraction of copper and zinc from low-grade copper concentrate containing chalcopyrite, tennantite, sphalerite, and pyrite during batch and continuous bioleaching experiments was studied. It was demonstrated that ASL and further bioleaching may be a promising approach for treatment of copper–zinc concentrates containing tennantite as this approach allows increasing copper extraction degree in comparison to one-stage bioleaching by 1.6–2.3 times. Thus, ASL was shown to be effective for pretreatment of tennantite containing concentrates to improve bioleaching for copper extraction. At the same time, ASL led to decrease in zinc extraction by 1.4–1.5 times. Therefore, the development of combined hydrometallurgical processes including ASL and bioleaching for effective metal leaching requires further studies to avoid negative effect on zinc extraction. [ABSTRACT FROM AUTHOR]
- Subjects :
- BACTERIAL leaching
COPPER
SPHALERITE
LEACHING
CHALCOPYRITE
PYRITES
ARSENIC
Subjects
Details
- Language :
- English
- ISSN :
- 20367481
- Volume :
- 13
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Microbiology Research
- Publication Type :
- Academic Journal
- Accession number :
- 159351733
- Full Text :
- https://doi.org/10.3390/microbiolres13030032