Leaching of covellite in ionic liquid solution
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Date
2025
Authors
Marilović, Dragana
Bogdanović, Grozdanka
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade - Technical Faculty in Bor
Source
Proceedings [Elektronski izvor] - 56th International October Conference on Mining and Metallurgy - IOC 2025, 22-25 October, 2025, Bor Lake, Serbia
Volume
Issue
Abstract
Covellite is refractory to conventional hydrometallurgical processes, therefore alternative methods are required to improve copper extraction. The aim of this work was to investigate the leaching of covellite concentrate in an ionic liquid solution ([bmim]HSO4) with hydrogen peroxide as a strong oxidizing agent. The results indicate that the presence of hydrogen peroxide significantly improves copper extraction due to its strong oxidizing ability, which facilitates the dissolution of sulfide species. Although only preliminary data are presented, the results confirm the potential of ionic liquids in combination with oxidizing agents for the treatment of copper sulfide concentrates. When covellite concentrate was leached in an ionic liquid solution without oxidants, the leaching degree of copper was 1.03 %. The results showed that the maximum dissolution of copper in the presence of 3.0 mol/dm3 hydrogen peroxide was 28.97 %. This approach
provides a basis for the development of more environmentally friendly and efficient leaching processes for complex copper ores and concentrates.
Description
Keywords
Covellite, Ionic liquid, Hydrogen peroxide, Leaching
Citation
DOI
10.5937/IOC25221M
Scopus
ISSN
ISBN
978-86-6305-164-5
License
CC-BY-NC-ND