Leaching of pure chalcocite in a chloride media using sea water and wastewater

Chalcocite 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...

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Authors: Toro Villarroel, Norman Rodrigo, Briceño Romero, Williams, Pérez Salinas, Kevin, Cánovas Vidal, Manuel, Trigueros Tornero, Emilio, Sepúlveda Rivera, Rossana, Hernández Avendaño, Pía Carolina Andrea
Format: article
Status:Published version
Publication Date:2019
Country:España
Institution:Universidad Politécnica de Cartagena(UPCT)
Repository:Repositorio Digital UPCT
OAI Identifier:oai:repositorio.upct.es:10317/8510
Online Access:http://hdl.handle.net/10317/8510
https://www.mdpi.com/2075-4701/9/7/780
Access Level:Open access
Keyword:Chalcocite
Sulphide leaching
Copper
Reusing water
Desalination residue
Ecological treatment
Explotación de Minas
5312.09 Minería
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spelling Leaching of pure chalcocite in a chloride media using sea water and wastewaterToro Villarroel, Norman RodrigoBriceño Romero, WilliamsPérez Salinas, KevinCánovas Vidal, ManuelTrigueros Tornero, EmilioSepúlveda Rivera, RossanaHernández Avendaño, Pía Carolina AndreaChalcociteSulphide leachingCopperReusing waterDesalination residueEcological treatmentExplotación de Minas5312.09 MineríaChalcocite 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.The 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.MDPI AGScientific Equipment Unit- MAINI of the Universidad Católica del Norte (Chile)202020202019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/10317/8510https://www.mdpi.com/2075-4701/9/7/780reponame:Repositorio Digital UPCTinstname:Universidad Politécnica de Cartagena(UPCT)Ingléshttp://hdl.handle.net/10317/8504Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.upct.es:10317/85102026-05-15T06:39:02Z
dc.title.none.fl_str_mv Leaching of pure chalcocite in a chloride media using sea water and wastewater
title Leaching of pure chalcocite in a chloride media using sea water and wastewater
spellingShingle Leaching of pure chalcocite in a chloride media using sea water and wastewater
Toro Villarroel, Norman Rodrigo
Chalcocite
Sulphide leaching
Copper
Reusing water
Desalination residue
Ecological treatment
Explotación de Minas
5312.09 Minería
title_short Leaching of pure chalcocite in a chloride media using sea water and wastewater
title_full Leaching of pure chalcocite in a chloride media using sea water and wastewater
title_fullStr Leaching of pure chalcocite in a chloride media using sea water and wastewater
title_full_unstemmed Leaching of pure chalcocite in a chloride media using sea water and wastewater
title_sort Leaching of pure chalcocite in a chloride media using sea water and wastewater
dc.creator.none.fl_str_mv Toro Villarroel, Norman Rodrigo
Briceño Romero, Williams
Pérez Salinas, Kevin
Cánovas Vidal, Manuel
Trigueros Tornero, Emilio
Sepúlveda Rivera, Rossana
Hernández Avendaño, Pía Carolina Andrea
author Toro Villarroel, Norman Rodrigo
author_facet Toro Villarroel, Norman Rodrigo
Briceño Romero, Williams
Pérez Salinas, Kevin
Cánovas Vidal, Manuel
Trigueros Tornero, Emilio
Sepúlveda Rivera, Rossana
Hernández Avendaño, Pía Carolina Andrea
author_role author
author2 Briceño Romero, Williams
Pérez Salinas, Kevin
Cánovas Vidal, Manuel
Trigueros Tornero, Emilio
Sepúlveda Rivera, Rossana
Hernández Avendaño, Pía Carolina Andrea
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Scientific Equipment Unit- MAINI of the Universidad Católica del Norte (Chile)
dc.subject.none.fl_str_mv Chalcocite
Sulphide leaching
Copper
Reusing water
Desalination residue
Ecological treatment
Explotación de Minas
5312.09 Minería
topic Chalcocite
Sulphide leaching
Copper
Reusing water
Desalination residue
Ecological treatment
Explotación de Minas
5312.09 Minería
description Chalcocite 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.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10317/8510
https://www.mdpi.com/2075-4701/9/7/780
url http://hdl.handle.net/10317/8510
https://www.mdpi.com/2075-4701/9/7/780
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://hdl.handle.net/10317/8504
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
dc.source.none.fl_str_mv reponame:Repositorio Digital UPCT
instname:Universidad Politécnica de Cartagena(UPCT)
instname_str Universidad Politécnica de Cartagena(UPCT)
reponame_str Repositorio Digital UPCT
collection Repositorio Digital UPCT
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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