Characterization of the siderurgy slags as the presence of natural radionuclides

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dc.creatorDiogo Teixeira Moreira
dc.creatorArno Heeren de Oliveira
dc.creatorAdriana de Souza Medeiros Batista
dc.date.accessioned2023-08-18T19:56:26Z
dc.date.accessioned2025-09-09T01:01:02Z
dc.date.available2023-08-18T19:56:26Z
dc.date.issued20-11-15
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3390/proceedings2201296
dc.identifier.issn2504-3900
dc.identifier.urihttps://hdl.handle.net/1843/57946
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEnvironment, Green Technology, and Engineering International Conference
dc.rightsAcesso Aberto
dc.subjectÓxido Ferroso-Férrico
dc.subjectDifração de Raios X
dc.subject.otherRare earth elements
dc.subject.otherFe3O4
dc.subject.otherSteel slag
dc.subject.otherINAA
dc.titleCharacterization of the siderurgy slags as the presence of natural radionuclides
dc.typeArtigo de evento
local.citation.epage12
local.citation.spage1
local.citation.volume2
local.description.resumoSteel slag is considered a by-product of the steel industry and its reuse is a strategy for environmental protection, since it consists of potential polluting materials. Besides, this material may contain chemical elements in such proportion that may be used in strategic materials such as composites and electronics. For example, magnetite (Fe3O4) may be of great interest for its magnetic properties in the production of composites with different applications. On the other hand, rare earth elements (REE) production is vital for new technologies and since traces of the different REE are found in most iron ores, their extraction can be conducted together. However, previous characterization of the slag is necessary; since they vary in mineralogical composition conform to steelmaking operations. Classical characterization techniques of ores such as X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) may be limited to characterize small fractions of materials. Therefore, in this study, neutron activation analysis was used as the characterization technique to confirm the presence of iron and REE in the slag. The steel slag composite sample of the Linz-Donawitz (LD) process was collected in a steelwork localized in the Iron Quadrangle, Minas Gerais, Brazil. The steel slag sample was characterized by instrumental neutron activation analysis (INAA), using the TRIGA MARK I IPR-R1 nuclear research reactor. The results are compared with the characterizations made with XRD and SEM-EDS. Although XRD and EDS results indicated the presence of magnetite in a small proportion, INAA was decisive confirming the presence of REE in the mineralogical composition of the composite sample collected.
local.identifier.orcidhttps://orcid.org/0000-0001-6834-7551
local.publisher.countryBrasil
local.publisher.departmentMED - DEPARTAMENTO DE ANATOMIA E IMAGEM
local.publisher.initialsUFMG
local.url.externahttps://www.mdpi.com/2504-3900/2/20/1296

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