Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing

Resource recovery is a process that has been used to obtain products from industrial waste. Mining tailings can be used as an alternative through ore beneficiation to create by-products for this type of waste. The work herein investigated the recovery of two products from a real tailing generated in...

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Autores: Húngaro Costa, Raquel, Tenório Vinhal, Jonathan, Scarazzato, Tatiana|||0000-0002-9526-1937, Crocce Romano Espinosa, Denise
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/451002
Acceso en línea:https://hdl.handle.net/2117/451002
https://dx.doi.org/10.46873/2300-3960.1469
Access Level:acceso abierto
Palabra clave:Resource recovery
Hydrometallurgy
Mining tailing
Magnesium sulfate
Calcium sulfate
Àrees temàtiques de la UPC::Enginyeria química
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spelling Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailingHúngaro Costa, RaquelTenório Vinhal, JonathanScarazzato, Tatiana|||0000-0002-9526-1937Crocce Romano Espinosa, DeniseResource recoveryHydrometallurgyMining tailingMagnesium sulfateCalcium sulfateÀrees temàtiques de la UPC::Enginyeria químicaResource recovery is a process that has been used to obtain products from industrial waste. Mining tailings can be used as an alternative through ore beneficiation to create by-products for this type of waste. The work herein investigated the recovery of two products from a real tailing generated in the Zn beneficiation route in the flotation step. A non-magnetic fraction was submitted to a hydrometallurgical route to produce MgSO4 and CaSO4. Thermodynamic simulations using FactSage software were performed to evaluate the optimal leaching conditions varying the S:L ratio, the sulfuric acid concentration, and temperature. The best modeled conditions for pure dolomite were established in 1.2 mol×L-1 H2SO4, S:L ratio 1:10, at room temperature, showing 100% Mg extraction. The simulation with the real composition showed 100% Mg extraction using 1.0 mol×L-1 H2SO4, S:L ratio 1:10, at room temperature. Experimental leaching tests led to Mg and Ca extraction yields of 72% ±5 and 2%, respectively, obtained at 50°C in 35 min. The cementation step resulted in 92.3% of Cd removal from the leach liquor with Zn:Cd ratio of 100:1 in 5 min at 25°C. The obtained by-products were CaSO4 and solubilized MgSO4. Both are potentially usable for agriculture purposes, being magnesium sulfate a secondary macronutrient as fertilizer, and CaSO4 as a soil conditioner.Peer ReviewedElsevier20252025-09-3020262026-01-22journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/451002https://dx.doi.org/10.46873/2300-3960.1469reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4510022026-05-27T15:37:01Z
dc.title.none.fl_str_mv Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
title Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
spellingShingle Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
Húngaro Costa, Raquel
Resource recovery
Hydrometallurgy
Mining tailing
Magnesium sulfate
Calcium sulfate
Àrees temàtiques de la UPC::Enginyeria química
title_short Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
title_full Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
title_fullStr Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
title_full_unstemmed Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
title_sort Recovery of magnesium sulfate and calcium sulfate from zinc flotation tailing
dc.creator.none.fl_str_mv Húngaro Costa, Raquel
Tenório Vinhal, Jonathan
Scarazzato, Tatiana|||0000-0002-9526-1937
Crocce Romano Espinosa, Denise
author Húngaro Costa, Raquel
author_facet Húngaro Costa, Raquel
Tenório Vinhal, Jonathan
Scarazzato, Tatiana|||0000-0002-9526-1937
Crocce Romano Espinosa, Denise
author_role author
author2 Tenório Vinhal, Jonathan
Scarazzato, Tatiana|||0000-0002-9526-1937
Crocce Romano Espinosa, Denise
author2_role author
author
author
dc.subject.none.fl_str_mv Resource recovery
Hydrometallurgy
Mining tailing
Magnesium sulfate
Calcium sulfate
Àrees temàtiques de la UPC::Enginyeria química
topic Resource recovery
Hydrometallurgy
Mining tailing
Magnesium sulfate
Calcium sulfate
Àrees temàtiques de la UPC::Enginyeria química
description Resource recovery is a process that has been used to obtain products from industrial waste. Mining tailings can be used as an alternative through ore beneficiation to create by-products for this type of waste. The work herein investigated the recovery of two products from a real tailing generated in the Zn beneficiation route in the flotation step. A non-magnetic fraction was submitted to a hydrometallurgical route to produce MgSO4 and CaSO4. Thermodynamic simulations using FactSage software were performed to evaluate the optimal leaching conditions varying the S:L ratio, the sulfuric acid concentration, and temperature. The best modeled conditions for pure dolomite were established in 1.2 mol×L-1 H2SO4, S:L ratio 1:10, at room temperature, showing 100% Mg extraction. The simulation with the real composition showed 100% Mg extraction using 1.0 mol×L-1 H2SO4, S:L ratio 1:10, at room temperature. Experimental leaching tests led to Mg and Ca extraction yields of 72% ±5 and 2%, respectively, obtained at 50°C in 35 min. The cementation step resulted in 92.3% of Cd removal from the leach liquor with Zn:Cd ratio of 100:1 in 5 min at 25°C. The obtained by-products were CaSO4 and solubilized MgSO4. Both are potentially usable for agriculture purposes, being magnesium sulfate a secondary macronutrient as fertilizer, and CaSO4 as a soil conditioner.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-09-30
2026
2026-01-22
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 https://hdl.handle.net/2117/451002
https://dx.doi.org/10.46873/2300-3960.1469
url https://hdl.handle.net/2117/451002
https://dx.doi.org/10.46873/2300-3960.1469
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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