Ionic liquids as additives for acid leaching of copper from sulfidic ores

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dc.contributor.authorCarlesi, Carlos
dc.contributor.authorCortes, Enrique
dc.contributor.authorDibernardi, Gianfranco
dc.contributor.authorMorales, Jaime
dc.contributor.authorMuñoz, Edmundo
dc.date.accessioned2023-09-25T15:28:51Z
dc.date.available2023-09-25T15:28:51Z
dc.date.issued2016-05
dc.descriptionIndexación: Scopuses
dc.description.abstractTwo acid imidazolium-based Ionic liquids (ILs) were evaluated for use in the leaching of a real non-concentrated chalcopyrite ore in an aerated system at different temperatures, monitoring copper recoveries in aqueous solution and in the presence of sulfuric acid. When ILs were used contemporaneously with the acid, synergic effects were found; these effects were mainly related to the IL action of decreasing the solid-solution hydrophobic resistance to electron transfer, thus enabling continuous acid leaching of the solid surface. Temperatures higher than 60 °C trigger high increases in copper recoveries (up to 70% copper recovery); this could occur due to the promotion of the parallel chemical decomposition of metal sulfide intermediates and the decrease of mass transfer limitations. In light of the obtained results, it is proposed that ionic liquids could be considered as catalyst or leaching additives rather than leaching agents itself. © 2016 Elsevier B.V. B.V. All rights reserved.es
dc.description.urihttps://www-sciencedirect-com.recursosbiblioteca.unab.cl/science/article/pii/S0304386X16300123?via%3Dihub
dc.identifier.citationHydrometallurgy Volume 161, Pages 29 - 331 May 2016es
dc.identifier.doi10.1016/j.hydromet.2016.01.012
dc.identifier.issn0304-386X
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53298
dc.language.isoenes
dc.publisherElsevieres
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subject1-butyl-3-methyl-imidazolium hydrogen sulfatees
dc.subjectChalcopyritees
dc.subjectCopper oreses
dc.subjectIonic liquidses
dc.subjectLeachinges
dc.subjectPassivationes
dc.titleIonic liquids as additives for acid leaching of copper from sulfidic oreses
dc.typeArtículoes
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