Show simple item record

dc.contributor.authorTorres Albornoz, David Antonio 
dc.contributor.authorTrigueros Tornero, Emilio 
dc.contributor.authorRobles Vásquez, Pedro Adrián 
dc.contributor.authorLeiva, Williams H. 
dc.contributor.authorJeldres Valenzuela, Ricardo Iván 
dc.contributor.authorToledo, Pedro G. 
dc.contributor.authorToro Villarroel, Norman Rodrigo
dc.identifier.citationTorres, D.; Trigueros, E.; Robles, P.; Leiva, W.H.; Jeldres, R.I.; Toledo, P.G.; Toro, N. Leaching of Pure Chalcocite with Reject Brine and MnO2 from Manganese Nodules. Metals 2020, 10, 1426.
dc.description.abstractChalcocite (Cu2S) has the fastest kinetics of dissolution of Cu in chlorinated media of all copper sulfide minerals. Chalcocite has been identified as having economic interest due to its abundance, although the water necessary for its dissolution is scarce in many regions. In this work, the replacement of fresh water by sea water or by reject brine with high chloride content from desalination plants is analyzed. Additionally, the effect of adding MnO2 from available manganese nodules in vast quantities at the bottom of the sea is studied. Reject brine shows better results than sea water, and the addition of MnO2 to the brine significantly increases the kinetics of chalcocite dissolution in a short time. H2SO4 concentration is found to be irrelevant when working at high concentrations of chloride and MnO2. The best results, 71% Cu extractions in 48 h, are obtained for reject brine, 100 mg of MnO2 per 200 g of mineral and H2SO4 0.5 mol/L. The results are expected to contribute to a sustainable process of dissolution of chalcocite by using the reject brine from desalination plantses_ES
dc.description.sponsorshipThe authors thank the Scientific Equipment Unit-MAINI of the Universidad Católica del Norte for all the chemical analyses in this work. 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. Pedro G. Toledo and Ricardo I. Jeldres thank Centro CRHIAM Project Anid/Fondap/15130015.es_ES
dc.relation.ispartofExtracción de cobre y manganeso mediante procesos de lixiviaciónes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleLeaching of pure chalcocite with reject brine and MnO2 from manganesees_ES
dc.subjectSulfide leachinges_ES
dc.subjectChalcocite dissolutiones_ES
dc.subjectReject brinees_ES
dc.subjectReplace wateres_ES
dc.subject.unesco5312.09 Mineríaes_ES
dc.contributor.funderUniversidad Católica del Nortees_ES
dc.contributor.funderUniversidad Católica del Nortees_ES
dc.contributor.funderUniversidad Católica de Valparaísoes_ES

Files in this item


This item appears in the following Collection(s)

Show simple item record

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