Influence of attrition variables on iron ore flotation.

Detalhes bibliográficos
Autor(a) principal: Fortes, Fabiana Fonseca
Data de Publicação: 2018
Outros Autores: Rodrigues, Otávia Martins Silva, Pereira, Carlos Alberto, Gonçalves, Douglas
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/10255
Resumo: The presence of slimes is harmful to the flotation process: the performance and consumption of reagents are negatively affected. Traditionally, the desliming stage has been responsible for removing slimes. However, depending on the porosity of the mineral particles, desliming may not be sufficient to maximize the concentration results. An attrition process before the desliming operation can improve the removal of slime, especially when slimes cover the surface and/or are confined to the cavities/pores of the mineral particles. Attrition is present in the flowcharts of the beneficiation process of phosphate and industrial sand (silica sand). Research has been undertaken for its application to produce pre-concentrates of zircon and iron ore. However, there is still little knowledge of the influence of the attrition variables on the beneficiation process of iron ore. This study presents a factorial design and analysis of the effects of these variables on the reverse flotation of iron ore. The standard of the experimental procedures for all tests included the attrition of pulp, under the conditions of dispersion, desliming and flotation. The parameter analysed (variable response) was the metallurgical recovery in reverse flotation tests. The planning and analysis of the full factorial experiment indicated that with 95% reliability, the rotation speed of the attrition cell impeller was the main variable in the attrition process of the iron ore. The percentage of solid variables in the pulp and the time of the attrition, as well as their interactions, were not indicated to be significant.
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spelling Influence of attrition variables on iron ore flotation.Slime and attritionThe presence of slimes is harmful to the flotation process: the performance and consumption of reagents are negatively affected. Traditionally, the desliming stage has been responsible for removing slimes. However, depending on the porosity of the mineral particles, desliming may not be sufficient to maximize the concentration results. An attrition process before the desliming operation can improve the removal of slime, especially when slimes cover the surface and/or are confined to the cavities/pores of the mineral particles. Attrition is present in the flowcharts of the beneficiation process of phosphate and industrial sand (silica sand). Research has been undertaken for its application to produce pre-concentrates of zircon and iron ore. However, there is still little knowledge of the influence of the attrition variables on the beneficiation process of iron ore. This study presents a factorial design and analysis of the effects of these variables on the reverse flotation of iron ore. The standard of the experimental procedures for all tests included the attrition of pulp, under the conditions of dispersion, desliming and flotation. The parameter analysed (variable response) was the metallurgical recovery in reverse flotation tests. The planning and analysis of the full factorial experiment indicated that with 95% reliability, the rotation speed of the attrition cell impeller was the main variable in the attrition process of the iron ore. The percentage of solid variables in the pulp and the time of the attrition, as well as their interactions, were not indicated to be significant.2018-09-26T16:20:59Z2018-09-26T16:20:59Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfFORTES, F. F. et al. Influence of attrition variables on iron ore flotation. REM - International Engineering Journal, Ouro Preto, v. 71, n. 1, p. 123-127, 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000100123>. Acesso em: 03 mai. 2018.18070353http://www.repositorio.ufop.br/handle/123456789/10255A REM - International Engineering Journal - autoriza o depósito de cópia de artigos dos professores e alunos da UFOP no Repositório Institucional da UFOP. Licença concedida mediante preenchimento de formulário online em: 12 set. 2013.info:eu-repo/semantics/openAccessFortes, Fabiana FonsecaRodrigues, Otávia Martins SilvaPereira, Carlos AlbertoGonçalves, Douglasengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2018-09-26T16:20:59Zoai:repositorio.ufop.br:123456789/10255Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332018-09-26T16:20:59Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Influence of attrition variables on iron ore flotation.
title Influence of attrition variables on iron ore flotation.
spellingShingle Influence of attrition variables on iron ore flotation.
Fortes, Fabiana Fonseca
Slime and attrition
title_short Influence of attrition variables on iron ore flotation.
title_full Influence of attrition variables on iron ore flotation.
title_fullStr Influence of attrition variables on iron ore flotation.
title_full_unstemmed Influence of attrition variables on iron ore flotation.
title_sort Influence of attrition variables on iron ore flotation.
author Fortes, Fabiana Fonseca
author_facet Fortes, Fabiana Fonseca
Rodrigues, Otávia Martins Silva
Pereira, Carlos Alberto
Gonçalves, Douglas
author_role author
author2 Rodrigues, Otávia Martins Silva
Pereira, Carlos Alberto
Gonçalves, Douglas
author2_role author
author
author
dc.contributor.author.fl_str_mv Fortes, Fabiana Fonseca
Rodrigues, Otávia Martins Silva
Pereira, Carlos Alberto
Gonçalves, Douglas
dc.subject.por.fl_str_mv Slime and attrition
topic Slime and attrition
description The presence of slimes is harmful to the flotation process: the performance and consumption of reagents are negatively affected. Traditionally, the desliming stage has been responsible for removing slimes. However, depending on the porosity of the mineral particles, desliming may not be sufficient to maximize the concentration results. An attrition process before the desliming operation can improve the removal of slime, especially when slimes cover the surface and/or are confined to the cavities/pores of the mineral particles. Attrition is present in the flowcharts of the beneficiation process of phosphate and industrial sand (silica sand). Research has been undertaken for its application to produce pre-concentrates of zircon and iron ore. However, there is still little knowledge of the influence of the attrition variables on the beneficiation process of iron ore. This study presents a factorial design and analysis of the effects of these variables on the reverse flotation of iron ore. The standard of the experimental procedures for all tests included the attrition of pulp, under the conditions of dispersion, desliming and flotation. The parameter analysed (variable response) was the metallurgical recovery in reverse flotation tests. The planning and analysis of the full factorial experiment indicated that with 95% reliability, the rotation speed of the attrition cell impeller was the main variable in the attrition process of the iron ore. The percentage of solid variables in the pulp and the time of the attrition, as well as their interactions, were not indicated to be significant.
publishDate 2018
dc.date.none.fl_str_mv 2018-09-26T16:20:59Z
2018-09-26T16:20:59Z
2018
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 FORTES, F. F. et al. Influence of attrition variables on iron ore flotation. REM - International Engineering Journal, Ouro Preto, v. 71, n. 1, p. 123-127, 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000100123>. Acesso em: 03 mai. 2018.
18070353
http://www.repositorio.ufop.br/handle/123456789/10255
identifier_str_mv FORTES, F. F. et al. Influence of attrition variables on iron ore flotation. REM - International Engineering Journal, Ouro Preto, v. 71, n. 1, p. 123-127, 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000100123>. Acesso em: 03 mai. 2018.
18070353
url http://www.repositorio.ufop.br/handle/123456789/10255
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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