The kinetics of zinc silicate leaching in sodium hydroxide.

Detalhes bibliográficos
Autor(a) principal: Santos, Fabiano Mariel Fernandes dos
Data de Publicação: 2010
Outros Autores: Pina, Pablo dos Santos, Porcaro, Rodrigo Rangel, Oliveira, Víctor de Andrade Alvarenga, Silva, Carlos Antônio da, Leão, Versiane Albis
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
dARK ID: ark:/61566/0013000008ckd
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/1229
Resumo: The alkaline leaching kinetics of a zinc silicate ore assaying 34.1% Zn, 11.1% Fe and 22.9% SiO2 is studied in sodium hydroxide solutions. Speciation diagrams indicate zinc dissolution as [Zn(OH)4]2− and SEM analysis showed a progressive reduction in particle size during leaching which supports the shrinking particle model. The process is chemically controlled with an activation energy of 67.8±9.0 kJ/mol and reaction order with respect to NaOH determined as 1.44±0.46.
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spelling The kinetics of zinc silicate leaching in sodium hydroxide.Zinc silicateSodium hydroxideLeaching kineticsShrinking particle modelChemical controlThe alkaline leaching kinetics of a zinc silicate ore assaying 34.1% Zn, 11.1% Fe and 22.9% SiO2 is studied in sodium hydroxide solutions. Speciation diagrams indicate zinc dissolution as [Zn(OH)4]2− and SEM analysis showed a progressive reduction in particle size during leaching which supports the shrinking particle model. The process is chemically controlled with an activation energy of 67.8±9.0 kJ/mol and reaction order with respect to NaOH determined as 1.44±0.46.2012-08-02T17:07:05Z2012-08-02T17:07:05Z2010info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSANTOS, F. M. F. et al. The kinetics of zinc silicate leaching in sodium hydroxide. Hydrometallurgy, v. 102, n. 1-4, p. 43-49, abr. 2010. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0304386X10000241>. Acesso em: 02 ago. 2012.0304386Xhttp://www.repositorio.ufop.br/handle/123456789/1229ark:/61566/0013000008ckdO periódico Hydrometallurgy concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3337021029066.info:eu-repo/semantics/openAccessSantos, Fabiano Mariel Fernandes dosPina, Pablo dos SantosPorcaro, Rodrigo RangelOliveira, Víctor de Andrade AlvarengaSilva, Carlos Antônio daLeão, Versiane Albisengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2024-11-10T19:43:00Zoai:repositorio.ufop.br:123456789/1229Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332024-11-10T19:43Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv The kinetics of zinc silicate leaching in sodium hydroxide.
title The kinetics of zinc silicate leaching in sodium hydroxide.
spellingShingle The kinetics of zinc silicate leaching in sodium hydroxide.
Santos, Fabiano Mariel Fernandes dos
Zinc silicate
Sodium hydroxide
Leaching kinetics
Shrinking particle model
Chemical control
title_short The kinetics of zinc silicate leaching in sodium hydroxide.
title_full The kinetics of zinc silicate leaching in sodium hydroxide.
title_fullStr The kinetics of zinc silicate leaching in sodium hydroxide.
title_full_unstemmed The kinetics of zinc silicate leaching in sodium hydroxide.
title_sort The kinetics of zinc silicate leaching in sodium hydroxide.
author Santos, Fabiano Mariel Fernandes dos
author_facet Santos, Fabiano Mariel Fernandes dos
Pina, Pablo dos Santos
Porcaro, Rodrigo Rangel
Oliveira, Víctor de Andrade Alvarenga
Silva, Carlos Antônio da
Leão, Versiane Albis
author_role author
author2 Pina, Pablo dos Santos
Porcaro, Rodrigo Rangel
Oliveira, Víctor de Andrade Alvarenga
Silva, Carlos Antônio da
Leão, Versiane Albis
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Santos, Fabiano Mariel Fernandes dos
Pina, Pablo dos Santos
Porcaro, Rodrigo Rangel
Oliveira, Víctor de Andrade Alvarenga
Silva, Carlos Antônio da
Leão, Versiane Albis
dc.subject.por.fl_str_mv Zinc silicate
Sodium hydroxide
Leaching kinetics
Shrinking particle model
Chemical control
topic Zinc silicate
Sodium hydroxide
Leaching kinetics
Shrinking particle model
Chemical control
description The alkaline leaching kinetics of a zinc silicate ore assaying 34.1% Zn, 11.1% Fe and 22.9% SiO2 is studied in sodium hydroxide solutions. Speciation diagrams indicate zinc dissolution as [Zn(OH)4]2− and SEM analysis showed a progressive reduction in particle size during leaching which supports the shrinking particle model. The process is chemically controlled with an activation energy of 67.8±9.0 kJ/mol and reaction order with respect to NaOH determined as 1.44±0.46.
publishDate 2010
dc.date.none.fl_str_mv 2010
2012-08-02T17:07:05Z
2012-08-02T17:07:05Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv SANTOS, F. M. F. et al. The kinetics of zinc silicate leaching in sodium hydroxide. Hydrometallurgy, v. 102, n. 1-4, p. 43-49, abr. 2010. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0304386X10000241>. Acesso em: 02 ago. 2012.
0304386X
http://www.repositorio.ufop.br/handle/123456789/1229
dc.identifier.dark.fl_str_mv ark:/61566/0013000008ckd
identifier_str_mv SANTOS, F. M. F. et al. The kinetics of zinc silicate leaching in sodium hydroxide. Hydrometallurgy, v. 102, n. 1-4, p. 43-49, abr. 2010. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0304386X10000241>. Acesso em: 02 ago. 2012.
0304386X
ark:/61566/0013000008ckd
url http://www.repositorio.ufop.br/handle/123456789/1229
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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