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Leaching chalcopyrite with High MnO2 and chloride concentrations
dc.contributor.author | Torres Albornoz, David Antonio | |
dc.contributor.author | Ayala Alcazar, Luis | |
dc.contributor.author | Jeldres Valenzuela, Ricardo Iván | |
dc.contributor.author | Cerecedo Sáenz, Eduardo | |
dc.contributor.author | Salinas Rodríguez, Eleazar | |
dc.contributor.author | Robles Vásquez, Pedro Adrián | |
dc.contributor.author | Toro Villarroel, Norman Rodrigo | |
dc.date.accessioned | 2021-05-05T07:32:14Z | |
dc.date.available | 2021-05-05T07:32:14Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Torres, David; Ayala, Luís; Jeldres, Ricardo I.; Cerecedo-Sáenz, Eduardo; Salinas-Rodríguez, Eleazar; Robles, Pedro; Toro, Norman. 2020. "Leaching Chalcopyrite with High MnO2 and Chloride Concentrations" Metals 10, no. 1: 107. https://doi.org/10.3390/met10010107 | es_ES |
dc.identifier.issn | 2075-4701 | |
dc.description.abstract | Most copper minerals are found as sulfides, with chalcopyrite being the most abundant. However; this ore is refractory to conventional hydrometallurgical methods, so it has been historically exploited through froth flotation, followed by smelting operations. This implies that the processing involves polluting activities, either by the formation of tailings dams and the emission of large amounts of SO2 into the atmosphere. Given the increasing environmental restrictions, it is necessary to consider new processing strategies, which are compatible with the environment, and, if feasible, combine the reuse of industrial waste. In the present research, the dissolution of pure chalcopyrite was studied considering the use of MnO2 and wastewater with a high chloride content. Fine particles (20 _m) generated an increase in extraction of copper from the mineral. Besides, it was discovered that working at high temperatures (80 _C); the large concentrations of MnO2 become irrelevant. The biggest copper extractions of this work (71%) were achieved when operating at 80 _C; particle size of 47 + 38 _m, MnO2/CuFeS2 ratio of 5/1, and 1 mol/L of H2SO4. | es_ES |
dc.description.sponsorship | The authors are grateful for the contribution of the Scientific Equipment Unit-MAINI of the Universidad Católica del Norte for facilitating the chemical analysis of the solutions. Pedro Robles thanks the Pontificia Universidad Católica de Valparaíso for the support provided. Also, we thanks Conicyt Fondecyt 11171036 and Centro CRHIAM Project Conicyt/Fondap/15130015. | es_ES |
dc.format | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation.ispartof | Extracción de cobre y manganeso mediante procesos de lixiviación | es_ES |
dc.rights | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.title | Leaching chalcopyrite with High MnO2 and chloride concentrations | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.subject | Dissolution | es_ES |
dc.subject | CuFeS2 | es_ES |
dc.subject | Chloride media | es_ES |
dc.subject | Manganese nodules | es_ES |
dc.identifier.uri | http://hdl.handle.net/10317/9350 | |
dc.identifier.doi | 10.3390/met10010107 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.subject.unesco | 5312.09 Minería | es_ES |
dc.contributor.funder | Universidad Católica del Norte | es_ES |
dc.contributor.funder | Universidad Católica de Valparaíso | es_ES |
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