Kinetics of copper and cadmium cementation by zinc powder.
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/12709 http://dx.doi.org/10.4322/2176-1523.20191661 |
Resumo: | The cementation of copper and cadmium by zinc powder was investigated in order to assess the influence of different parameters in the process. The results showed that the process follows a first order reaction with two stages in both systems. In the system Cu/Zn, the second stage is faster than the first while in the system Cd/Zn the second stage is slower than the first. In the system Cu/Zn, the variation on the surface area of copper cement followed a power law and a straight line was obtained by plotting –ln([Cu2+]/[Cu2+] 0 ) against t3/2, the activation energy was calculated as 16.3kJ. In the system Zn/Cd the surface area available for reaction decreased as a result of the cement agglomeration. On the experiments carried out with ions Cu2+ and Cd2+ in solution, purer copper cement was obtained when the experiments were carried out in the presence of less than stoichiometric amount of zinc powder and longer reaction times. |
id |
UFOP_da443bbd5778dbd4a581e5e346dbb77e |
---|---|
oai_identifier_str |
oai:localhost:123456789/12709 |
network_acronym_str |
UFOP |
network_name_str |
Repositório Institucional da UFOP |
repository_id_str |
3233 |
spelling |
Oliveira, Víctor de Andrade AlvarengaPenna, José Márcio SoaresMagalhães, Lucas SanchesLeão, Versiane AlbisSantos, Claudio Gouvea dos2020-09-08T21:37:02Z2020-09-08T21:37:02Z2019OLIVEIRA, V. de A. A. et al. Kinetics of copper and cadmium cementation by zinc powder. Tecnologia em Metalurgia, Materiais e Mineração, São Paulo, v. 16, n. 2, p. 255-262, abr./jun. 2019. Disponível em: <https://tecnologiammm.com.br/doi/10.4322/2176-1523.20191661>. Acesso em: 10 mar. 2020.2176-1523http://www.repositorio.ufop.br/handle/123456789/12709http://dx.doi.org/10.4322/2176-1523.20191661The cementation of copper and cadmium by zinc powder was investigated in order to assess the influence of different parameters in the process. The results showed that the process follows a first order reaction with two stages in both systems. In the system Cu/Zn, the second stage is faster than the first while in the system Cd/Zn the second stage is slower than the first. In the system Cu/Zn, the variation on the surface area of copper cement followed a power law and a straight line was obtained by plotting –ln([Cu2+]/[Cu2+] 0 ) against t3/2, the activation energy was calculated as 16.3kJ. In the system Zn/Cd the surface area available for reaction decreased as a result of the cement agglomeration. On the experiments carried out with ions Cu2+ and Cd2+ in solution, purer copper cement was obtained when the experiments were carried out in the presence of less than stoichiometric amount of zinc powder and longer reaction times.This is an open access paper, published under the Creative Commons CC BY-NC-ND license (Attribution-NonCommercial-NoDerivs) - https://creativecommons.org/licenses/ by-nc-nd/4.0/. Fonte: o próprio artigo.info:eu-repo/semantics/openAccessKinetics of copper and cadmium cementation by zinc powder.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-8924http://www.repositorio.ufop.br/bitstream/123456789/12709/2/license.txt62604f8d955274beb56c80ce1ee5dcaeMD52ORIGINALARTIGO_KineticsCopperCadmium.pdfARTIGO_KineticsCopperCadmium.pdfapplication/pdf1855079http://www.repositorio.ufop.br/bitstream/123456789/12709/1/ARTIGO_KineticsCopperCadmium.pdfb3e32309ce5f2e161e92bfff78b9288eMD51123456789/127092020-09-08 17:37:02.403oai:localhost: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ório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332020-09-08T21:37:02Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Kinetics of copper and cadmium cementation by zinc powder. |
title |
Kinetics of copper and cadmium cementation by zinc powder. |
spellingShingle |
Kinetics of copper and cadmium cementation by zinc powder. Oliveira, Víctor de Andrade Alvarenga |
title_short |
Kinetics of copper and cadmium cementation by zinc powder. |
title_full |
Kinetics of copper and cadmium cementation by zinc powder. |
title_fullStr |
Kinetics of copper and cadmium cementation by zinc powder. |
title_full_unstemmed |
Kinetics of copper and cadmium cementation by zinc powder. |
title_sort |
Kinetics of copper and cadmium cementation by zinc powder. |
author |
Oliveira, Víctor de Andrade Alvarenga |
author_facet |
Oliveira, Víctor de Andrade Alvarenga Penna, José Márcio Soares Magalhães, Lucas Sanches Leão, Versiane Albis Santos, Claudio Gouvea dos |
author_role |
author |
author2 |
Penna, José Márcio Soares Magalhães, Lucas Sanches Leão, Versiane Albis Santos, Claudio Gouvea dos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Víctor de Andrade Alvarenga Penna, José Márcio Soares Magalhães, Lucas Sanches Leão, Versiane Albis Santos, Claudio Gouvea dos |
description |
The cementation of copper and cadmium by zinc powder was investigated in order to assess the influence of different parameters in the process. The results showed that the process follows a first order reaction with two stages in both systems. In the system Cu/Zn, the second stage is faster than the first while in the system Cd/Zn the second stage is slower than the first. In the system Cu/Zn, the variation on the surface area of copper cement followed a power law and a straight line was obtained by plotting –ln([Cu2+]/[Cu2+] 0 ) against t3/2, the activation energy was calculated as 16.3kJ. In the system Zn/Cd the surface area available for reaction decreased as a result of the cement agglomeration. On the experiments carried out with ions Cu2+ and Cd2+ in solution, purer copper cement was obtained when the experiments were carried out in the presence of less than stoichiometric amount of zinc powder and longer reaction times. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019 |
dc.date.accessioned.fl_str_mv |
2020-09-08T21:37:02Z |
dc.date.available.fl_str_mv |
2020-09-08T21:37:02Z |
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.citation.fl_str_mv |
OLIVEIRA, V. de A. A. et al. Kinetics of copper and cadmium cementation by zinc powder. Tecnologia em Metalurgia, Materiais e Mineração, São Paulo, v. 16, n. 2, p. 255-262, abr./jun. 2019. Disponível em: <https://tecnologiammm.com.br/doi/10.4322/2176-1523.20191661>. Acesso em: 10 mar. 2020. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/12709 |
dc.identifier.issn.none.fl_str_mv |
2176-1523 |
dc.identifier.doi.pt_BR.fl_str_mv |
http://dx.doi.org/10.4322/2176-1523.20191661 |
identifier_str_mv |
OLIVEIRA, V. de A. A. et al. Kinetics of copper and cadmium cementation by zinc powder. Tecnologia em Metalurgia, Materiais e Mineração, São Paulo, v. 16, n. 2, p. 255-262, abr./jun. 2019. Disponível em: <https://tecnologiammm.com.br/doi/10.4322/2176-1523.20191661>. Acesso em: 10 mar. 2020. 2176-1523 |
url |
http://www.repositorio.ufop.br/handle/123456789/12709 http://dx.doi.org/10.4322/2176-1523.20191661 |
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.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 |
bitstream.url.fl_str_mv |
http://www.repositorio.ufop.br/bitstream/123456789/12709/2/license.txt http://www.repositorio.ufop.br/bitstream/123456789/12709/1/ARTIGO_KineticsCopperCadmium.pdf |
bitstream.checksum.fl_str_mv |
62604f8d955274beb56c80ce1ee5dcae b3e32309ce5f2e161e92bfff78b9288e |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP) |
repository.mail.fl_str_mv |
repositorio@ufop.edu.br |
_version_ |
1801685738557800448 |