Evaluation of the acid leaching technique for recovery of U3O8 and ThO2 in niobium/tantalum slag

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dc.creatorVanderlei Vilaça Moura
dc.creatorTalita Santos
dc.creatorClaubia Pereira Bezerra Lima
dc.date.accessioned2025-02-14T18:30:22Z
dc.date.accessioned2025-09-09T00:25:33Z
dc.date.available2025-02-14T18:30:22Z
dc.date.issued2023-05-30
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.15392/2319-0612.2023.2165
dc.identifier.issn2319-0612
dc.identifier.urihttps://hdl.handle.net/1843/80093
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofBrazilian Journal of Radiation Sciences
dc.rightsAcesso Aberto
dc.subjectQuímica
dc.subjectQuímica metalúrgica
dc.subjectÁcido sulfúrico
dc.subjectUrânio
dc.subjectMinérios de urânio
dc.subject.otherUranium oxide
dc.subject.otherThorium oxide
dc.subject.otherMetallurgical recovery
dc.titleEvaluation of the acid leaching technique for recovery of U3O8 and ThO2 in niobium/tantalum slag
dc.typeArtigo de periódico
local.citation.epage17
local.citation.issue1A (Suppl.)
local.citation.spage01
local.citation.volume11
local.description.resumoThis study presented the recovery of uranium oxide and thorium oxide from aluminothermic slag from the metallurgical processing of columbite – a niobium/tantalum mineral with the presence of U3O8 and ThO2 – from a mining-industrial facility. The methodology consisted of sampling, comminution, and leaching using sulfuric acid. The head sample showed contents of (1.78 + 0.14) % for U3O8 and (3.66 + 0.04) % for ThO2. The metallurgical recovery reached values above 80% for the uranium oxide and above 70% for the thorium oxide for pH < 1.5 and process time greater than eight hours.
local.identifier.orcidhttps://orcid.org/0000-0003-1181-511X
local.identifier.orcidhttps://orcid.org/0000-0003-2337-194X
local.identifier.orcidhttps://orcid.org/0000-0001-5999-9961
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA NUCLEAR
local.publisher.initialsUFMG
local.url.externahttps://www.bjrs.org.br/revista/index.php/REVISTA/article/view/2165

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