Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable

This article belongs to the Special Issue Emerging Refractory Ceramics: Microstructure, Properties and Applications

Detalhes bibliográficos
Autores: López-Perales, Jesús Fernando, Díaz-Tato, Leonel, González-Carranza, Yadira, Contreras de León, José Eulalio, Gómez-Rodríguez, Cristian, Fernández-González, Daniel, Rodríguez-Castellanos, Edén Amaral
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2025
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/412224
Acesso em linha:http://hdl.handle.net/10261/412224
Access Level:Acceso aberto
Palavra-chave:Aluminum spent foundry sand
Quartz
Solid waste
Aluminosilicate refractory castable
Sustainability
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spelling Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castableLópez-Perales, Jesús FernandoDíaz-Tato, LeonelGonzález-Carranza, YadiraContreras de León, José EulalioGómez-Rodríguez, CristianFernández-González, DanielRodríguez-Castellanos, Edén AmaralAluminum spent foundry sandQuartzSolid wasteAluminosilicate refractory castableSustainabilityThis article belongs to the Special Issue Emerging Refractory Ceramics: Microstructure, Properties and ApplicationsMetal casting industries generate substantial quantities of spent foundry sand (SFS), a silica- and alumina-rich by-product that remains underutilized, with recycling rates below 30%. This study explores the incorporation of aluminum SFS as a secondary raw material in aluminosilicate refractory castables to promote sustainable waste valorization and circular economy practices. Refractory mixtures were prepared with bauxite, kyanite, calcium aluminate cement, microsilica, and flint clay, where fine flint clay was partially replaced by aluminum SFS at 0, 5, 10, and 15 wt.%. Samples were dried at 120 °C and sintered at 850, 1050, and 1400 °C for 4 h. Bulk density, apparent porosity, cold crushing strength, and modulus of rupture were measured, while phase and microstructural evolution were examined by XRD and SEM. The 5 wt.% SFS-containing castable exhibited comparable strength and density to the reference formulation, attributed to the formation of secondary mullite and anorthite that improved matrix cohesion. Higher SFS contents (10–15 wt.%) increased porosity and reduced strength due to excess SiO2 and silica polymorphism. These results demonstrate the technical feasibility of using aluminum SFS in refractory castables, contributing to resource conservation, waste reduction, and the development of environmentally sustainable refractory materials for high-temperature applications.Peer reviewedMultidisciplinary Digital Publishing InstituteFernández-González, Daniel [0000-0001-6957-4764]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2026202620252026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/412224reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3390/ma18245500Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4122242026-05-22T06:33:51Z
dc.title.none.fl_str_mv Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
title Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
spellingShingle Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
López-Perales, Jesús Fernando
Aluminum spent foundry sand
Quartz
Solid waste
Aluminosilicate refractory castable
Sustainability
title_short Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
title_full Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
title_fullStr Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
title_full_unstemmed Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
title_sort Aluminum spent foundry sand as an emergent raw material in the production of a sustainable aluminosilicate refractory castable
dc.creator.none.fl_str_mv López-Perales, Jesús Fernando
Díaz-Tato, Leonel
González-Carranza, Yadira
Contreras de León, José Eulalio
Gómez-Rodríguez, Cristian
Fernández-González, Daniel
Rodríguez-Castellanos, Edén Amaral
author López-Perales, Jesús Fernando
author_facet López-Perales, Jesús Fernando
Díaz-Tato, Leonel
González-Carranza, Yadira
Contreras de León, José Eulalio
Gómez-Rodríguez, Cristian
Fernández-González, Daniel
Rodríguez-Castellanos, Edén Amaral
author_role author
author2 Díaz-Tato, Leonel
González-Carranza, Yadira
Contreras de León, José Eulalio
Gómez-Rodríguez, Cristian
Fernández-González, Daniel
Rodríguez-Castellanos, Edén Amaral
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Fernández-González, Daniel [0000-0001-6957-4764]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Aluminum spent foundry sand
Quartz
Solid waste
Aluminosilicate refractory castable
Sustainability
topic Aluminum spent foundry sand
Quartz
Solid waste
Aluminosilicate refractory castable
Sustainability
description This article belongs to the Special Issue Emerging Refractory Ceramics: Microstructure, Properties and Applications
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/412224
url http://hdl.handle.net/10261/412224
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3390/ma18245500
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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