Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex

Commercial copper (Cu) is obtained by a hydro-pyrometallurgical process, where the Cu anodes obtained in the furnaces (Cu > 99.5%) are enriched up to 99.99% in “cathodes” by electrorefining at an electrolysis plant. During this process, some impurities accumulate in the electrolyte, mainly ar...

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Autores: Paz Gómez, Daniela Carolina, Pérez Moreno, Silvia María, Gázquez González, Manuel Jesús, Guerrero Márquez, José Luis, Ruiz Oria, I., Ríos Ransanz, Guillermo, Bolívar Raya, Juan Pedro
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/19985
Acceso en línea:http://hdl.handle.net/10272/19985
Access Level:acceso abierto
Palabra clave:Electrolyte sludge
Ferric arsenate
Scorodite
Arsenic removal
Copper–arsenic solution
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spelling Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complexPaz Gómez, Daniela CarolinaPérez Moreno, Silvia MaríaGázquez González, Manuel JesúsGuerrero Márquez, José LuisRuiz Oria, I.Ríos Ransanz, GuillermoBolívar Raya, Juan PedroElectrolyte sludgeFerric arsenateScoroditeArsenic removalCopper–arsenic solutionCommercial copper (Cu) is obtained by a hydro-pyrometallurgical process, where the Cu anodes obtained in the furnaces (Cu > 99.5%) are enriched up to 99.99% in “cathodes” by electrorefining at an electrolysis plant. During this process, some impurities accumulate in the electrolyte, mainly arsenic (As), which decrease the quality of the Cu cathode. For this reason, the electrolyte is sent to an electrolyte cleaning plant (ECP) for its purification. Electrolyte sludge (ES) is produced in the last stage of purification and is recirculated back to the furnace due to the high Cu content. This recirculation involves a severe problem of As accumulation in the industrial process. The objective of this work was to develop a procedure to fully dissolve the ES, removing the As and recovering its Cu content. The ES dissolution process was optimised (dissolution efficiency > 99%) in H2SO4 (1.4 M)/HNO3 (1.8 M) medium using a 1:20 g mL-1 solid-to-liquid ratio. As was removed from the ES solution by its precipitation as iron (III) arsenate, with high efficiency (more than 70%). After As removal, the Cu can be precipitated as copper sulphate, which is used in several applications.Elsevier20212021-01-0120212021-01-01journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/19985reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/199852026-06-02T14:58:11Z
dc.title.none.fl_str_mv Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
title Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
spellingShingle Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
Paz Gómez, Daniela Carolina
Electrolyte sludge
Ferric arsenate
Scorodite
Arsenic removal
Copper–arsenic solution
title_short Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
title_full Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
title_fullStr Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
title_full_unstemmed Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
title_sort Arsenic removal procedure for the electrolyte from a hydro-pyrometallurgical complex
dc.creator.none.fl_str_mv Paz Gómez, Daniela Carolina
Pérez Moreno, Silvia María
Gázquez González, Manuel Jesús
Guerrero Márquez, José Luis
Ruiz Oria, I.
Ríos Ransanz, Guillermo
Bolívar Raya, Juan Pedro
author Paz Gómez, Daniela Carolina
author_facet Paz Gómez, Daniela Carolina
Pérez Moreno, Silvia María
Gázquez González, Manuel Jesús
Guerrero Márquez, José Luis
Ruiz Oria, I.
Ríos Ransanz, Guillermo
Bolívar Raya, Juan Pedro
author_role author
author2 Pérez Moreno, Silvia María
Gázquez González, Manuel Jesús
Guerrero Márquez, José Luis
Ruiz Oria, I.
Ríos Ransanz, Guillermo
Bolívar Raya, Juan Pedro
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Electrolyte sludge
Ferric arsenate
Scorodite
Arsenic removal
Copper–arsenic solution
topic Electrolyte sludge
Ferric arsenate
Scorodite
Arsenic removal
Copper–arsenic solution
description Commercial copper (Cu) is obtained by a hydro-pyrometallurgical process, where the Cu anodes obtained in the furnaces (Cu > 99.5%) are enriched up to 99.99% in “cathodes” by electrorefining at an electrolysis plant. During this process, some impurities accumulate in the electrolyte, mainly arsenic (As), which decrease the quality of the Cu cathode. For this reason, the electrolyte is sent to an electrolyte cleaning plant (ECP) for its purification. Electrolyte sludge (ES) is produced in the last stage of purification and is recirculated back to the furnace due to the high Cu content. This recirculation involves a severe problem of As accumulation in the industrial process. The objective of this work was to develop a procedure to fully dissolve the ES, removing the As and recovering its Cu content. The ES dissolution process was optimised (dissolution efficiency > 99%) in H2SO4 (1.4 M)/HNO3 (1.8 M) medium using a 1:20 g mL-1 solid-to-liquid ratio. As was removed from the ES solution by its precipitation as iron (III) arsenate, with high efficiency (more than 70%). After As removal, the Cu can be precipitated as copper sulphate, which is used in several applications.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/19985
url http://hdl.handle.net/10272/19985
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
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
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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