Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates

Autores
Bazan Brizuela, Vanesa Lucia; Maratta Martínez, Sergio Ariel; Villafañe Salinas, Manuel Gastón; Pacheco, Pablo Hugo; Brandaleze, Elena
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background: Rhenium [Re] is obtained as a by-product during the extraction of copper and molybdenum ores. In current extractive metallurgy, Re extraction involves a heat treatment that causes Re losses by volatilization and release of toxic gases into the environment.Objective: This research proposes a novel microwave heat treatment [MWHT] to enhance Re ex-traction avoiding Re losses and toxic gas release into the environment.Method: A novel MWHT and traditional thermal processes used in mining were applied to Cu-Mo concentrates. The elemental composition analysis of the concentrate was performed by atomic spec-trometry. The crystalline phase was identified by X-ray diffraction. Particle structure observations were performed with an optical microscopy [OM] and scanning electron microscopy [SEM] with a Field Emission, including semiquantitative analysis [EDS]. Thermal behavior and non-isothermal reduction processes were studied using Thermogravimetry Differential Thermal Analysis [TG-DTA].Result: Re, S and As release decreased 5% during MWHT, compared to 34% of traditional meth-ods. Molybdenite [MoS2] and Chalcopyrite [CuFeS2] were the crystalline phases in the ore after MWHT. Rhenium was found as an oxide [ReO3] and metallic Re. Samples under MWHT showed structural transformations in the mineral particles, with minimal mass losses and high Re and Mo concentrations. The structural transformation of the ore involved microcracks formation.Conclusion: The MWHT induces a combination of particle degradation mechanisms and lower temperature requirements that prevent Re losses. Lower gas emissions turn this technology into an environmentally friendly one. Crystalline transformation of the Re-chalcopyrite phase enhances Re release during leaching, the next step after MWHT in the hydrometallurgical extraction.
Fil: Bazan Brizuela, Vanesa Lucia. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina
Fil: Maratta Martínez, Sergio Ariel. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina
Fil: Villafañe Salinas, Manuel Gastón. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina
Fil: Pacheco, Pablo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina
Fil: Brandaleze, Elena. Universidad Tecnológica Nacional. Facultad Regional San Nicolás; Argentina
Materia
MICROWAVE
RHENIUM
COPPER
MOLYBDENUM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/238352
Acceder
id CONICETDig_9bf6c0fe9daf69f7a2dd37414a4e9d4c
oai_identifier_str oai:ri.conicet.gov.ar:11336/238352
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum ConcentratesBazan Brizuela, Vanesa LuciaMaratta Martínez, Sergio ArielVillafañe Salinas, Manuel GastónPacheco, Pablo HugoBrandaleze, ElenaMICROWAVERHENIUMCOPPERMOLYBDENUMhttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2Background: Rhenium [Re] is obtained as a by-product during the extraction of copper and molybdenum ores. In current extractive metallurgy, Re extraction involves a heat treatment that causes Re losses by volatilization and release of toxic gases into the environment.Objective: This research proposes a novel microwave heat treatment [MWHT] to enhance Re ex-traction avoiding Re losses and toxic gas release into the environment.Method: A novel MWHT and traditional thermal processes used in mining were applied to Cu-Mo concentrates. The elemental composition analysis of the concentrate was performed by atomic spec-trometry. The crystalline phase was identified by X-ray diffraction. Particle structure observations were performed with an optical microscopy [OM] and scanning electron microscopy [SEM] with a Field Emission, including semiquantitative analysis [EDS]. Thermal behavior and non-isothermal reduction processes were studied using Thermogravimetry Differential Thermal Analysis [TG-DTA].Result: Re, S and As release decreased 5% during MWHT, compared to 34% of traditional meth-ods. Molybdenite [MoS2] and Chalcopyrite [CuFeS2] were the crystalline phases in the ore after MWHT. Rhenium was found as an oxide [ReO3] and metallic Re. Samples under MWHT showed structural transformations in the mineral particles, with minimal mass losses and high Re and Mo concentrations. The structural transformation of the ore involved microcracks formation.Conclusion: The MWHT induces a combination of particle degradation mechanisms and lower temperature requirements that prevent Re losses. Lower gas emissions turn this technology into an environmentally friendly one. Crystalline transformation of the Re-chalcopyrite phase enhances Re release during leaching, the next step after MWHT in the hydrometallurgical extraction.Fil: Bazan Brizuela, Vanesa Lucia. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Maratta Martínez, Sergio Ariel. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Villafañe Salinas, Manuel Gastón. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; ArgentinaFil: Pacheco, Pablo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; ArgentinaFil: Brandaleze, Elena. Universidad Tecnológica Nacional. Facultad Regional San Nicolás; ArgentinaBentham Science Publishers2024-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfhttp://hdl.handle.net/11336/238352Bazan Brizuela, Vanesa Lucia; Maratta Martínez, Sergio Ariel; Villafañe Salinas, Manuel Gastón; Pacheco, Pablo Hugo; Brandaleze, Elena; Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates; Bentham Science Publishers; Current Microwave Chemistry; 11; 5-2024; 1-92213-3356CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.eurekaselect.com/230320/articleinfo:eu-repo/semantics/altIdentifier/doi/10.2174/0122133356290503240509092306info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:34Zoai:ri.conicet.gov.ar:11336/238352instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:04:34.495CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
title Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
spellingShingle Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
Bazan Brizuela, Vanesa Lucia
MICROWAVE
RHENIUM
COPPER
MOLYBDENUM
title_short Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
title_full Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
title_fullStr Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
title_full_unstemmed Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
title_sort Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates
dc.creator.none.fl_str_mv Bazan Brizuela, Vanesa Lucia
Maratta Martínez, Sergio Ariel
Villafañe Salinas, Manuel Gastón
Pacheco, Pablo Hugo
Brandaleze, Elena
author Bazan Brizuela, Vanesa Lucia
author_facet Bazan Brizuela, Vanesa Lucia
Maratta Martínez, Sergio Ariel
Villafañe Salinas, Manuel Gastón
Pacheco, Pablo Hugo
Brandaleze, Elena
author_role author
author2 Maratta Martínez, Sergio Ariel
Villafañe Salinas, Manuel Gastón
Pacheco, Pablo Hugo
Brandaleze, Elena
author2_role author
author
author
author
dc.subject.none.fl_str_mv MICROWAVE
RHENIUM
COPPER
MOLYBDENUM
topic MICROWAVE
RHENIUM
COPPER
MOLYBDENUM
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Background: Rhenium [Re] is obtained as a by-product during the extraction of copper and molybdenum ores. In current extractive metallurgy, Re extraction involves a heat treatment that causes Re losses by volatilization and release of toxic gases into the environment.Objective: This research proposes a novel microwave heat treatment [MWHT] to enhance Re ex-traction avoiding Re losses and toxic gas release into the environment.Method: A novel MWHT and traditional thermal processes used in mining were applied to Cu-Mo concentrates. The elemental composition analysis of the concentrate was performed by atomic spec-trometry. The crystalline phase was identified by X-ray diffraction. Particle structure observations were performed with an optical microscopy [OM] and scanning electron microscopy [SEM] with a Field Emission, including semiquantitative analysis [EDS]. Thermal behavior and non-isothermal reduction processes were studied using Thermogravimetry Differential Thermal Analysis [TG-DTA].Result: Re, S and As release decreased 5% during MWHT, compared to 34% of traditional meth-ods. Molybdenite [MoS2] and Chalcopyrite [CuFeS2] were the crystalline phases in the ore after MWHT. Rhenium was found as an oxide [ReO3] and metallic Re. Samples under MWHT showed structural transformations in the mineral particles, with minimal mass losses and high Re and Mo concentrations. The structural transformation of the ore involved microcracks formation.Conclusion: The MWHT induces a combination of particle degradation mechanisms and lower temperature requirements that prevent Re losses. Lower gas emissions turn this technology into an environmentally friendly one. Crystalline transformation of the Re-chalcopyrite phase enhances Re release during leaching, the next step after MWHT in the hydrometallurgical extraction.
Fil: Bazan Brizuela, Vanesa Lucia. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina
Fil: Maratta Martínez, Sergio Ariel. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina
Fil: Villafañe Salinas, Manuel Gastón. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Investigaciones Mineras; Argentina
Fil: Pacheco, Pablo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina
Fil: Brandaleze, Elena. Universidad Tecnológica Nacional. Facultad Regional San Nicolás; Argentina
description Background: Rhenium [Re] is obtained as a by-product during the extraction of copper and molybdenum ores. In current extractive metallurgy, Re extraction involves a heat treatment that causes Re losses by volatilization and release of toxic gases into the environment.Objective: This research proposes a novel microwave heat treatment [MWHT] to enhance Re ex-traction avoiding Re losses and toxic gas release into the environment.Method: A novel MWHT and traditional thermal processes used in mining were applied to Cu-Mo concentrates. The elemental composition analysis of the concentrate was performed by atomic spec-trometry. The crystalline phase was identified by X-ray diffraction. Particle structure observations were performed with an optical microscopy [OM] and scanning electron microscopy [SEM] with a Field Emission, including semiquantitative analysis [EDS]. Thermal behavior and non-isothermal reduction processes were studied using Thermogravimetry Differential Thermal Analysis [TG-DTA].Result: Re, S and As release decreased 5% during MWHT, compared to 34% of traditional meth-ods. Molybdenite [MoS2] and Chalcopyrite [CuFeS2] were the crystalline phases in the ore after MWHT. Rhenium was found as an oxide [ReO3] and metallic Re. Samples under MWHT showed structural transformations in the mineral particles, with minimal mass losses and high Re and Mo concentrations. The structural transformation of the ore involved microcracks formation.Conclusion: The MWHT induces a combination of particle degradation mechanisms and lower temperature requirements that prevent Re losses. Lower gas emissions turn this technology into an environmentally friendly one. Crystalline transformation of the Re-chalcopyrite phase enhances Re release during leaching, the next step after MWHT in the hydrometallurgical extraction.
publishDate 2024
dc.date.none.fl_str_mv 2024-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/238352
Bazan Brizuela, Vanesa Lucia; Maratta Martínez, Sergio Ariel; Villafañe Salinas, Manuel Gastón; Pacheco, Pablo Hugo; Brandaleze, Elena; Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates; Bentham Science Publishers; Current Microwave Chemistry; 11; 5-2024; 1-9
2213-3356
CONICET Digital
CONICET
url http://hdl.handle.net/11336/238352
identifier_str_mv Bazan Brizuela, Vanesa Lucia; Maratta Martínez, Sergio Ariel; Villafañe Salinas, Manuel Gastón; Pacheco, Pablo Hugo; Brandaleze, Elena; Microwave Thermal Treatment for the Recovery of Re in Copper and Molybdenum Concentrates; Bentham Science Publishers; Current Microwave Chemistry; 11; 5-2024; 1-9
2213-3356
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.eurekaselect.com/230320/article
info:eu-repo/semantics/altIdentifier/doi/10.2174/0122133356290503240509092306
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/pdf
dc.publisher.none.fl_str_mv Bentham Science Publishers
publisher.none.fl_str_mv Bentham Science Publishers
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.885934

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