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Coupling comminution indices and mineralogical features as an approach to a geometallurgical characterization of a copper ore
University of Liege, GeMMe – Minerals Engineering and Recycling, Sart-Tilman Campus-B52, Liège, Belgium.ORCID iD: 0000-0001-8751-4116
University of Liege, GeMMe – Minerals Engineering and Recycling, Sart-Tilman Campus-B52, Liège, Belgium.
Dundee Precious Metals Chelopech, Village of Chelopech, Bulgaria.
2019 (English)In: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 130, p. 57-66Article in journal (Refereed) Published
Abstract [en]

A production block of the underground mine exploiting the Chelopech high sulphidation epithermal copper-gold deposit was subjected to geometallurgical modelling. This study details the procedure used based on traditional comminution and mineralogical indices. Drop weight and batch grinding tests were performed on representative samples to yield parameters related to Axb and operating work OWi indices. These were further correlated with the ore mineralogical features using principal component analysis. Modal mineralogy data processed by a set of linear equations enabled the estimation of the aforementioned indices with a deviation of ±2.4 for Axb and ±9.08 kWh/t for OWi respectively. Based on ore textural characteristics and non-sulphide gangue (NSG) minerals content, two geometallurgical domains were identified as a first approach to modelling of the studied block.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 130, p. 57-66
Keywords [en]
Geometallurgy, Comminution, Impact breakage, Work index, Process mineralogy, Principal component analysis
National Category
Mineral and Mine Engineering Geosciences, Multidisciplinary Geology
Research subject
Ore Geology
Identifiers
URN: urn:nbn:se:ltu:diva-76272DOI: 10.1016/j.mineng.2018.10.007OAI: oai:DiVA.org:ltu-76272DiVA, id: diva2:1358448
Available from: 2019-10-07 Created: 2019-10-07 Last updated: 2019-10-15Bibliographically approved

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Rincon, Jonathan

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