Proceedings of the 3rd International Conference Resources and Technology (RESAT 2025)

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Ionometallurgical Test Work on Gold and Copper Concentrates

Authors
Purev-Ochir Togtokhbaatar1, *, Charlotte Ashworth Guth2, Gero Frisch2
1Faculty of Raw Materials and Environmental Engineering, German-Mongolian Institute for Resources and Technology (GMIT), Ulaanbaatar, 12800, Mongolia
2Department of Inorganic Chemistry, TU Bergakademie Freiberg, 09599, Freiberg, Germany
*Corresponding author. Email: purevochir@gmit.edu.mn
Corresponding Author
Purev-Ochir Togtokhbaatar
Available Online 25 December 2025.
DOI
10.2991/978-94-6463-928-5_9How to use a DOI?
Keywords
Electrochemistry; Iodine; Chalcopyrite; Ionometallurgy; Deep eutectic solvents (DES)
Abstract

Leaching investigations using deep eutectic solvents (DES) have been carried out to investigate the feasibility of an ionometallurgical approach to processing copper concentrates. The concentrate under investigation consisted mainly of chalcopyrite, pyrite, bornite, quartz, molybdenite, and trace amounts of native gold. The most efficient leaching procedure involved leaching in ethaline (a 1:2 molar ratio of choline chloride and ethylene glycol) at 70 ºC, with 25 mM Iodine (I2) as an oxidising agent. The optimum conditions resulted in high yields of both copper (100%) and gold (95%) after a relatively short leach duration (72 h). Analysis of the leaching residues revealed selective leaching of chalcopyrite over pyrite. This has additional significant advantages not only for subsequent target metal extraction from the leachate, but also for possible recycling of the residues to be used as an additive to promote leaching rates, due to galvanic effects of pyrite.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 3rd International Conference Resources and Technology (RESAT 2025)
Series
Advances in Engineering Research
Publication Date
25 December 2025
ISBN
978-94-6463-928-5
ISSN
2352-5401
DOI
10.2991/978-94-6463-928-5_9How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Purev-Ochir Togtokhbaatar
AU  - Charlotte Ashworth Guth
AU  - Gero Frisch
PY  - 2025
DA  - 2025/12/25
TI  - Ionometallurgical Test Work on Gold and Copper Concentrates
BT  - Proceedings of the 3rd International Conference Resources and Technology (RESAT 2025)
PB  - Atlantis Press
SP  - 98
EP  - 109
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-928-5_9
DO  - 10.2991/978-94-6463-928-5_9
ID  - Togtokhbaatar2025
ER  -