EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE

Detalhes bibliográficos
Autor(a) principal: Cruz, Daniel Geraldo da
Data de Publicação: 2021
Outros Autores: Gonçalves, Paola Suzane Moreira, Lelis, Deisiane Ferreira, Lima, Rosa Malena Fernandes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Holos
Texto Completo: http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/9000
Resumo: In this work the effect of the Ca2+ and Mg2+ ions, added as salts of chlorine, on the reverse cationic flotation at pH 10.5 of an itabiritic iron ore sample was evaluated. In general, it was observed that the total ion concentrations higher than 83 mg/L in aqueous solution increased the Fe recovery and SiO2 content in obtained concentrates compared in absence of them. The opposite occurred with Fe content. This effect is due to the electrostatic attraction between the positive species from these ions hydrolysis in aqueous solution and the negative surface of quartz, which avoided the adsorption of the ions aminium, whose main adsorption mechanism is by electrostatic attraction of them with the mineral negative surface. However the use of ethylenediaminetetraacetic acid - EDTA after the ore conditioning with Ca2+ and Mg2+ ions, into adequate proportions of EDTA to total ions, produced concentrates with similar contents of Fe and SiO2 with the concentrates of this sample in absence of ions once they were complexed by EDTA and is no longer adsorbed on negative quartz surface.
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spelling EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON OREEFEITO DE ÍONS Ca2+ E Mg2+ NA FLOTAÇÃO CATIÔNICA REVERSA DE MINÉRIO DE FERRO ITABIRÍTICOiron orereverse cationic flotationCa2 and Mg2 ionsEDTAMinério de ferroflotação catiônica reversaíons Ca2 e Mg2 EDTAIn this work the effect of the Ca2+ and Mg2+ ions, added as salts of chlorine, on the reverse cationic flotation at pH 10.5 of an itabiritic iron ore sample was evaluated. In general, it was observed that the total ion concentrations higher than 83 mg/L in aqueous solution increased the Fe recovery and SiO2 content in obtained concentrates compared in absence of them. The opposite occurred with Fe content. This effect is due to the electrostatic attraction between the positive species from these ions hydrolysis in aqueous solution and the negative surface of quartz, which avoided the adsorption of the ions aminium, whose main adsorption mechanism is by electrostatic attraction of them with the mineral negative surface. However the use of ethylenediaminetetraacetic acid - EDTA after the ore conditioning with Ca2+ and Mg2+ ions, into adequate proportions of EDTA to total ions, produced concentrates with similar contents of Fe and SiO2 with the concentrates of this sample in absence of ions once they were complexed by EDTA and is no longer adsorbed on negative quartz surface.Neste trabalho foi avaliado o efeito dos íons Ca2+ e Mg2+, adicionados como sais de cloreto, na flotação catiônica reversa em pH 10,5 de uma amostra de minério de ferro itabirítico. Em geral, foi observado que concentrações totais de íons maiores que 83 mg/L  em solução aquosa aumentou a recuperação de Fe e teor de SiO2 nos concentrado obtidos comparado com os ensaios efetuados a ausência dos mesmos. Ocorreu o oposto com o teor de Fe. Este efeito é devido a atração eletrostática entre as espécies positivas provenientes da hidrólise destes íons  em solução aquosa e a superfície negativa do quartzo, que evita a adsorção dos íons amonium, cujo principal mecanismo  de adsorção  é por atração eletrostática dos mesmos com a superfície mineral negativa. Contudo, o uso de ácido etilenodiiaminotetracético - EDTA após o condicionamento do minério com os íons Ca2+ e Mg2+, em proporções adequadas de EDTA para íons totais, produziu concentrados com teores de Fe e SiO2 similares aos concentrados desta amostra  na ausência de íons, uma vez que eles foram complexados pelo EDTA e não são mais  adsorvidos na superfície negativa do quartzo.Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte2021-08-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/900010.15628/holos.2020.9000HOLOS; v. 3 (2021); 1-111807-1600reponame:Holosinstname:Instituto Federal do Rio Grande do Norte (IFRN)instacron:IFRNenghttp://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/9000/pdfCopyright (c) 2021 HOLOSinfo:eu-repo/semantics/openAccessCruz, Daniel Geraldo daGonçalves, Paola Suzane MoreiraLelis, Deisiane FerreiraLima, Rosa Malena Fernandes2022-04-29T11:01:28Zoai:holos.ifrn.edu.br:article/9000Revistahttp://www2.ifrn.edu.br/ojs/index.php/HOLOSPUBhttp://www2.ifrn.edu.br/ojs/index.php/HOLOS/oaiholos@ifrn.edu.br||jyp.leite@ifrn.edu.br||propi@ifrn.edu.br1807-16001518-1634opendoar:2022-04-29T11:01:28Holos - Instituto Federal do Rio Grande do Norte (IFRN)false
dc.title.none.fl_str_mv EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
EFEITO DE ÍONS Ca2+ E Mg2+ NA FLOTAÇÃO CATIÔNICA REVERSA DE MINÉRIO DE FERRO ITABIRÍTICO
title EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
spellingShingle EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
Cruz, Daniel Geraldo da
iron ore
reverse cationic flotation
Ca2 and Mg2 ions
EDTA
Minério de ferro
flotação catiônica reversa
íons Ca2 e Mg2
EDTA
title_short EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
title_full EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
title_fullStr EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
title_full_unstemmed EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
title_sort EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
author Cruz, Daniel Geraldo da
author_facet Cruz, Daniel Geraldo da
Gonçalves, Paola Suzane Moreira
Lelis, Deisiane Ferreira
Lima, Rosa Malena Fernandes
author_role author
author2 Gonçalves, Paola Suzane Moreira
Lelis, Deisiane Ferreira
Lima, Rosa Malena Fernandes
author2_role author
author
author
dc.contributor.author.fl_str_mv Cruz, Daniel Geraldo da
Gonçalves, Paola Suzane Moreira
Lelis, Deisiane Ferreira
Lima, Rosa Malena Fernandes
dc.subject.por.fl_str_mv iron ore
reverse cationic flotation
Ca2 and Mg2 ions
EDTA
Minério de ferro
flotação catiônica reversa
íons Ca2 e Mg2
EDTA
topic iron ore
reverse cationic flotation
Ca2 and Mg2 ions
EDTA
Minério de ferro
flotação catiônica reversa
íons Ca2 e Mg2
EDTA
description In this work the effect of the Ca2+ and Mg2+ ions, added as salts of chlorine, on the reverse cationic flotation at pH 10.5 of an itabiritic iron ore sample was evaluated. In general, it was observed that the total ion concentrations higher than 83 mg/L in aqueous solution increased the Fe recovery and SiO2 content in obtained concentrates compared in absence of them. The opposite occurred with Fe content. This effect is due to the electrostatic attraction between the positive species from these ions hydrolysis in aqueous solution and the negative surface of quartz, which avoided the adsorption of the ions aminium, whose main adsorption mechanism is by electrostatic attraction of them with the mineral negative surface. However the use of ethylenediaminetetraacetic acid - EDTA after the ore conditioning with Ca2+ and Mg2+ ions, into adequate proportions of EDTA to total ions, produced concentrates with similar contents of Fe and SiO2 with the concentrates of this sample in absence of ions once they were complexed by EDTA and is no longer adsorbed on negative quartz surface.
publishDate 2021
dc.date.none.fl_str_mv 2021-08-06
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/9000
10.15628/holos.2020.9000
url http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/9000
identifier_str_mv 10.15628/holos.2020.9000
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/9000/pdf
dc.rights.driver.fl_str_mv Copyright (c) 2021 HOLOS
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2021 HOLOS
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte
publisher.none.fl_str_mv Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte
dc.source.none.fl_str_mv HOLOS; v. 3 (2021); 1-11
1807-1600
reponame:Holos
instname:Instituto Federal do Rio Grande do Norte (IFRN)
instacron:IFRN
instname_str Instituto Federal do Rio Grande do Norte (IFRN)
instacron_str IFRN
institution IFRN
reponame_str Holos
collection Holos
repository.name.fl_str_mv Holos - Instituto Federal do Rio Grande do Norte (IFRN)
repository.mail.fl_str_mv holos@ifrn.edu.br||jyp.leite@ifrn.edu.br||propi@ifrn.edu.br
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