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dc.contributor.authorToro Villarroel, Norman Rodrigo 
dc.contributor.authorBriceño Romero, Williams 
dc.contributor.authorPérez Salinas, Kevin 
dc.contributor.authorCánovas Vidal, Manuel 
dc.contributor.authorTrigueros Tornero, Emilio 
dc.contributor.authorSepúlveda Rivera, Rossana 
dc.contributor.authorHernández Avendaño, Pía Carolina Andrea
dc.identifier.citationToro, N.; Briceño, W.; Pérez, K.; Cánovas, M.; Trigueros, E.; Sepúlveda, R.; Hernández, P. Leaching of Pure Chalcocite in a Chloride Media Using Sea Water and Waste Water. Metals 2019, 9, 780.es_ES
dc.description.abstractChalcocite is the most important and abundant secondary copper ore in the world with a rapid dissolution of copper in an acid-chloride environment. In this investigation, the methodology of surface optimization will be applied to evaluate the e_ect of three independent variables (time, concentration of sulfuric acid and chloride concentration) in the leaching of pure chalcocite to extract the copper with the objective of obtaining a quadratic model that allows us to predict the extraction of copper. The kinetics of copper dissolution in regard to the function of temperature is also analyzed. An ANOVA indicates that the linear variables with the greatest influence are time and the chloride concentration. Also, the concentration of chloride-time exerts a significant synergic e_ect in the quadratic model. The ANOVA indicates that the quadratic model is representative and the R2 value of 0.92 is valid. The highest copper extraction (67.75%) was obtained at 48 h leaching under conditions of 2 mol/L H2SO4 and 100 g/L chloride. The XRD analysis shows the formation of a stable and non-polluting residue; such as elemental sulfur (S0). This residue was obtained in a leaching time of 4 h at room temperature under conditions of 0.5 mol/L H2SO4 and 50 g/L Cl􀀀.es_ES
dc.description.sponsorshipThe authors are grateful for the contribution of the Scientific Equipment Unit- MAINI of the Universidad Católica del Norte for aiding in generating data by automated electronic microscopy QEMSCAN® and for facilitating the chemical analysis of the solutions. We are also grateful to the Altonorte Mining Company for supporting this research and providing slag for this study, and we thank to Marina Vargas Aleuy and María Barraza Bustos of the Universidad Católica del Norte for supporting the experimental tests.es_ES
dc.publisherMDPI AGes_ES
dc.relation.ispartofOptimización de parámetros para la extracción de elementos desde minerales en medios ácidoes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleLeaching of pure chalcocite in a chloride media using sea water and wastewateres_ES
dc.subjectSulphide leachinges_ES
dc.subjectReusing wateres_ES
dc.subjectDesalination residuees_ES
dc.subjectEcological treatmentes_ES
dc.subject.otherExplotación de Minases_ES
dc.subject.unesco5312.09 Mineríaes_ES
dc.contributor.funderScientific Equipment Unit- MAINI of the Universidad Católica del Norte (Chile)es_ES

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Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España