The kinetics of zinc silicate leaching in sodium hydroxide.
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
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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Repositório Institucional da UFOP |
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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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1817705775567470592 |