Leaching of flotation tailings with a solution of sulfuric acid and ionic liquid
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Date
2023
Authors
Marilović, Dragana
Bogdanović, Grozdanka
Petrović, Sanja
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade, Technical Faculty in Bor
Source
Proceedings - 54th International October Conference on Mining and Metallurgy - IOC 2023, 18-21 October 2023, Bor Lake, Serbia, 2023, 456-459
Volume
Issue
Abstract
This paper presents the results of leaching flotation tailings containing 0.13% of copper and 4.22 % of iron. The experiments were carried out in a sulfuric acid solution (H2SO4) and an ionic liquid solution 1-butyl-3-methyl-imidazolium hydrogen sulfate ([bmim]HSO4). Concentrations of the reagents of 0.01 mol/dm3 and 0.05 mol/dm3 were tested. When leaching with sulfuric acid, the leaching degree of copper was 71.05% at the lower concentration of solution and 76.59% at the higher concentration of solution. When flotation tailings was leached in an ionic liquid solution with the same concentrations, the leaching degree of copper was 72.57% (for 0.01 mol/dm3) and 77.10% (for 0.05 mol/dm3), respectively. The results showed that the leaching rate of copper increased in the first 5-10 minutes of the reaction due to the presence of oxide minerals and then slightly increased with time. The dissolution of iron was <3% under the tested conditions. These results indicate that the ionic liquid 1-butyl-3-methyl-imidazolium hydrogen sulfate ([bmim]HSO4) can be used as agent for the leaching process of flotation tailings.
Description
Keywords
leaching, flotation tailings, sulfuric acid, ionic liquids
Citation
DOI
Scopus
ISSN
ISBN
978-86-6305-140-9
License
CC-BY-NC-ND