Iron recovery from iron ore tailings by direct hydrogen reduction at low temperature and magnetic separation

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dc.creatorRochel Montero Lago
dc.creatorAna Paula de Carvalho Teixeira
dc.creatorPaula Sevenini Pinto
dc.creatorJosé Domingos Ardisson
dc.creatorAdriana Barbosa Salviano
dc.creatorLuisa Emanuele Milagre
dc.creatorLarissa Caroline Martins Moreira
dc.creatorHamilton Pereira da Rocha Júnior
dc.creatorFabrício Vilela Parreira
dc.date.accessioned2023-11-16T17:18:17Z
dc.date.accessioned2025-09-09T00:38:08Z
dc.date.available2023-11-16T17:18:17Z
dc.date.issued2022
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.description.sponsorshipOutra Agência
dc.format.mimetypepdf
dc.identifier.doihttps://dx.doi.org/10.21577/0103-5053.20220053
dc.identifier.issn0103-5053
dc.identifier.urihttps://hdl.handle.net/1843/61007
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.rightsAcesso Aberto
dc.subjectHidrogênio
dc.subjectRefugos (Metalurgia)
dc.subjectRedução de minérios
dc.subjectFerro - Minas e mineração
dc.subjectResíduos - Reaproveitamento
dc.subject.otherHydrogen
dc.subject.otherIron ore tailing
dc.subject.otherIron
dc.subject.otherMagnetic separation
dc.subject.otherRecovery
dc.subject.otherReduction
dc.titleIron recovery from iron ore tailings by direct hydrogen reduction at low temperature and magnetic separation
dc.typeArtigo de periódico
local.citation.epage977
local.citation.issue8
local.citation.spage969
local.citation.volume33
local.description.resumoIn this work, we describe a sustainable alternative to recover iron from two iron ore tailings (IOT) using hydrogen reduction at relatively low temperatures followed by magnetic separation. X-ray powder diffraction (XRD), inductively coupled plasma (ICP), atomic absorption (AA), Mössbauer, scanning electron microscopy (SEM/EDS), Raman and thermogravimetry (TG) analyses indicated that the Fe oxide present in the IOTs (sandy tailing (ST) and mud tailings (MT), can be reduced with H2 at 500 ºC to produce α-Fe. Upon magnetic separation the mud tailing produced a 77 wt.% magnetic fraction increasing the Fe content from 19.2 to ca. 56 wt.% of Fe. On the other hand, the sandy tailing resulted in a 15 wt.% magnetic fraction increasing the Fe content from 19.2 to 70 wt.%. These results indicate that up to 86% of iron can be recovered from the IOT wastes already in the metallic form which can be very interesting for the steel industry.
local.identifier.orcidhttps://orcid.org/0000-0002-7499-105X
local.identifier.orcidhttps://orcid.org/0000-0002-7145-6342
local.identifier.orcidhttps://orcid.org/0000-0002-4985-7502
local.identifier.orcidhttps://orcid.org/0000-0002-5615-3482
local.identifier.orcidhttps://orcid.org/0000-0001-6518-0434
local.identifier.orcidhttps://orcid.org/0000-0001-6395-0562
local.identifier.orcidhttps://orcid.org/0000-0001-9015-3462
local.identifier.orcidhttps://orcid.org/0000-0001-6316-713X
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://jbcs.sbq.org.br/default.asp?ed=329

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