Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.

Detalhes bibliográficos
Autor(a) principal: Pavlovic, Suzana
Data de Publicação: 2003
Outros Autores: Brandão, Paulo Roberto Gomes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/3664
https://doi.org/10.1016/j.mineng.2003.06.011
Resumo: The depressant effect of corn starch, its polysaccharide components (amylose and amylopectin), the monomer glucose and the dimer maltose were studied on hematite and quartz, by means of infrared spectrometry, adsorption isotherms determination and microflotation tests. All the carbohydrates tested have been effective in maintaining hematite hydrophilic, including glucose and maltose; as for quartz, only a flocculation action (mainly by amylopectin) had a mild effect in decreasing its floatability by the amine collector. FTIR studies confirmed that the carbohydrates adsorbed intensively onto hematite and the spectra of the adsorbed polymers and monomer were very similar, even though the non-adsorbed monomer spectrum was markedly different. The common adsorption mechanism indicated is a surface reaction involving the iron ion.
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spelling Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.Mineral processingIron oresFlotation depressantsThe depressant effect of corn starch, its polysaccharide components (amylose and amylopectin), the monomer glucose and the dimer maltose were studied on hematite and quartz, by means of infrared spectrometry, adsorption isotherms determination and microflotation tests. All the carbohydrates tested have been effective in maintaining hematite hydrophilic, including glucose and maltose; as for quartz, only a flocculation action (mainly by amylopectin) had a mild effect in decreasing its floatability by the amine collector. FTIR studies confirmed that the carbohydrates adsorbed intensively onto hematite and the spectra of the adsorbed polymers and monomer were very similar, even though the non-adsorbed monomer spectrum was markedly different. The common adsorption mechanism indicated is a surface reaction involving the iron ion.2014-10-31T12:37:08Z2014-10-31T12:37:08Z2003info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfPAVLOVIC, S.; BRANDAO P. R. G. Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Minerals Engineering, v. 16, p. 1117-1122, 2003. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0892687503003212>. Acesso em: 20 ago. 2014.0892-6875http://www.repositorio.ufop.br/handle/123456789/3664https://doi.org/10.1016/j.mineng.2003.06.011O periódico Minerals Engineering concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3457171315747.info:eu-repo/semantics/openAccessPavlovic, SuzanaBrandão, Paulo Roberto Gomesengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2019-04-30T15:08:36Zoai:repositorio.ufop.br:123456789/3664Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-04-30T15:08:36Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
title Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
spellingShingle Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
Pavlovic, Suzana
Mineral processing
Iron ores
Flotation depressants
title_short Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
title_full Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
title_fullStr Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
title_full_unstemmed Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
title_sort Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
author Pavlovic, Suzana
author_facet Pavlovic, Suzana
Brandão, Paulo Roberto Gomes
author_role author
author2 Brandão, Paulo Roberto Gomes
author2_role author
dc.contributor.author.fl_str_mv Pavlovic, Suzana
Brandão, Paulo Roberto Gomes
dc.subject.por.fl_str_mv Mineral processing
Iron ores
Flotation depressants
topic Mineral processing
Iron ores
Flotation depressants
description The depressant effect of corn starch, its polysaccharide components (amylose and amylopectin), the monomer glucose and the dimer maltose were studied on hematite and quartz, by means of infrared spectrometry, adsorption isotherms determination and microflotation tests. All the carbohydrates tested have been effective in maintaining hematite hydrophilic, including glucose and maltose; as for quartz, only a flocculation action (mainly by amylopectin) had a mild effect in decreasing its floatability by the amine collector. FTIR studies confirmed that the carbohydrates adsorbed intensively onto hematite and the spectra of the adsorbed polymers and monomer were very similar, even though the non-adsorbed monomer spectrum was markedly different. The common adsorption mechanism indicated is a surface reaction involving the iron ion.
publishDate 2003
dc.date.none.fl_str_mv 2003
2014-10-31T12:37:08Z
2014-10-31T12:37:08Z
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 PAVLOVIC, S.; BRANDAO P. R. G. Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Minerals Engineering, v. 16, p. 1117-1122, 2003. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0892687503003212>. Acesso em: 20 ago. 2014.
0892-6875
http://www.repositorio.ufop.br/handle/123456789/3664
https://doi.org/10.1016/j.mineng.2003.06.011
identifier_str_mv PAVLOVIC, S.; BRANDAO P. R. G. Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Minerals Engineering, v. 16, p. 1117-1122, 2003. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0892687503003212>. Acesso em: 20 ago. 2014.
0892-6875
url http://www.repositorio.ufop.br/handle/123456789/3664
https://doi.org/10.1016/j.mineng.2003.06.011
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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