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Options for Increasing the Rate of Bioleaching of Arsenic Containing Copper Concentrate.

Authors :
Artykova, Alena
Elkina, Yuliya
Nechaeva, Aleksandra
Melamud, Vitaliy
Boduen, Anna
Bulaev, Aleksandr
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]

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