Carbonate content reduction in zinc ore concentrate.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorMartins, Lemyr-
Autor(es): dc.creatorPeres, Antônio Eduardo Clark-
Autor(es): dc.creatorGalery, Roberto-
Autor(es): dc.creatorPereira, Carlos Alberto-
Data de aceite: dc.date.accessioned2025-08-21T15:41:55Z-
Data de disponibilização: dc.date.available2025-08-21T15:41:55Z-
Data de envio: dc.date.issued2017-08-31-
Data de envio: dc.date.issued2017-08-31-
Data de envio: dc.date.issued2012-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/8613-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/S2238-7854(12)70006-6-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1021876-
Descrição: dc.descriptionThe hydrometallurgical zinc extraction from the willemite concentrate is impaired by the presence of high carbonate content. A stiff froth is produced causing zinc losses and acid consumption. A standard procedure was developed to de􀃀 ne the acceptable froth layer height in a laboratory test. Froth layers shorter than 2 cm resulted from carbonate content in the concentrate below 10.8%. The feasibility of adding a carbonate 􀃁 otation stage to the circuit was tested in laboratory and pilot scales. Among the collectors investigated, only those presenting a saponi􀃀 cation degree above 189 mg KOH/mg were effective in the laboratory experiments. Oleine and rice bran oil soaps were selected for the pilot scale experiments. The 􀃀 nal stage was a one month long industrial trial performed in a circuit consisting of three pneumatic cells G18. A comparison between the average results of the industrial trial including the carbonate 􀃁 otation stage and data of the raw industrial concentrate indicated that the MgO content in the concentrate dropped from 3.7%–3%. Concurrently, the carbonate content in the concentrate dropped from 11%–10.6%, the zinc grade in the concentrate increased from 41.4%–42% and the zinc recovery increased from 86.6%–89.8%. The concentrate was processed in the hydrometallurgical plant with no frothing problems.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsEste é um artigo Open Access sob a licença de CC BY-NC-ND. Fonte: o próprio artigo.-
Palavras-chave: dc.subjectFlotation froth-
Palavras-chave: dc.subjectFlotation collectors-
Palavras-chave: dc.subjectFlotation reagents-
Título: dc.titleCarbonate content reduction in zinc ore concentrate.-
Aparece nas coleções:Repositório Institucional - UFOP

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