Analysis of copper slag from a Chilean foundry for application as filler material in thermal energy storage systems

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dc.article.number115281
dc.catalogadoraba
dc.contributor.authorSegovia Araya, Valentina Constanza
dc.contributor.authorCardemil Iglesias, José Miguel
dc.contributor.authorSancy, Mamié
dc.contributor.authorEscobar Moragas, Rodrigo
dc.date.accessioned2025-03-31T16:37:24Z
dc.date.available2025-03-31T16:37:24Z
dc.date.issued2025
dc.description.abstractIn the field of solar thermal storage systems, metallurgical industry by-products have been proposed as filler materials for packed-bed thermal energy storage due to their low cost and suitable thermophysical properties. One of these by-products is copper slag, which has emerged as a competitive option compared to other types of industrial by-products. However, further research of its properties, composition, and heterogeneity is needed to fully address its potential as a storage medium. Approximately 2.2 tons of copper slag is produced per ton of copper extracted, posing disposal challenges for mining companies. Hence, there is growing interest in finding secondary uses for these slags. The present study investigated samples of copper slag from a Chilean foundry disposal site. Elemental and mineral characterization revealed that this heterogeneous material has high iron content with both amorphous and crystalline phases present. The evaluation of thermophysical properties showed stable specific heat capacity that increases with temperature within the range of 100 °C to 450 °C. However, these profiles exhibit variability in heat capacity, particularly at higher temperatures, which decreases with subsequent heating cycles. The results suggest that copper slag has potential as an alternative material for sensible heat storage in packed-bed systems, nonetheless, assessing the variability of its thermophysical properties is crucial to establish its feasibility for sustainable energy solutions.
dc.format.extent10 páginas
dc.fuente.origenORCID
dc.identifier.doi10.1016/j.est.2024.115281
dc.identifier.issn2352-152X
dc.identifier.scopusid2-s2.0-85214555582
dc.identifier.urihttps://doi.org/10.1016/j.est.2024.115281
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/103032
dc.identifier.wosidWOS:001400747900001
dc.information.autorucEscuela de Ingeniería; Segovia Araya, Valentina Constanza; S/I; 1160521
dc.information.autorucEscuela de Ingeniería; Cardemil Iglesias, José Miguel; 0000-0002-9022-8150; 119912
dc.information.autorucEscuela de Construcción Civil; Sancy, Mamié; 0000-0001-9523-2629; 1015225
dc.information.autorucEscuela de Ingeniería; Escobar Moragas, Rodrigo; 0000-0001-9097-7461; 158663
dc.language.isoen
dc.nota.accesocontenido parcial
dc.revistaJournal of Energy Storage
dc.rightsacceso restringido
dc.subjectSensible heat storage materials
dc.subjectThermophyisical characterization
dc.subjectPacked-bed thermal energy storage
dc.subjectSolar thermal energy storage
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.ods07 Affordable and clean energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleAnalysis of copper slag from a Chilean foundry for application as filler material in thermal energy storage systems
dc.typeartículo
dc.volumen111
sipa.codpersvinculados1160521
sipa.codpersvinculados119912
sipa.codpersvinculados1015225
sipa.codpersvinculados158663
sipa.trazabilidadORCID;2025-03-03
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