Comparative study of the main flotation frothers using a new HYDROMESS adapted technique
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | REM. Revista Escola de Minas (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672014000100013 |
Resumo: | Stability of bubble size in the pulp zone and froth control is an important parameter for a successful flotation process. The present study compares the action of the main frothers in terms of: mean bubble size in the pulp zone, froth stability, surface-tension-lowering ability and reagent participation in flotation of a naturally hydrophobic mineral. Bubble size was determined using a new technique adapted from HYDROMESS, a device designed to measure drop size. The remaining indicators were obtained by determining surface tension and conducting flotation tests with the addition of hydrophobic (graphite) and hydrophilic (calcite) particles. The results indicate that methyl isobutyl carbinol (MIBC) is the most efficient frother in controlling coalescence, with critical coalescence concentration (CCC) reached at 20 ppm. Moreover, this frother has greater potential for selective action, since it increased calcite entrainment by only 2.3% at a concentration of 30 ppm. In flotation tests with a sample of graphite, MIBC produced higher recoveries. |
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REM. Revista Escola de Minas (Online) |
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Comparative study of the main flotation frothers using a new HYDROMESS adapted techniqueflotationfrotherfroth controlcoalescencesurface tensionfroth stabilityStability of bubble size in the pulp zone and froth control is an important parameter for a successful flotation process. The present study compares the action of the main frothers in terms of: mean bubble size in the pulp zone, froth stability, surface-tension-lowering ability and reagent participation in flotation of a naturally hydrophobic mineral. Bubble size was determined using a new technique adapted from HYDROMESS, a device designed to measure drop size. The remaining indicators were obtained by determining surface tension and conducting flotation tests with the addition of hydrophobic (graphite) and hydrophilic (calcite) particles. The results indicate that methyl isobutyl carbinol (MIBC) is the most efficient frother in controlling coalescence, with critical coalescence concentration (CCC) reached at 20 ppm. Moreover, this frother has greater potential for selective action, since it increased calcite entrainment by only 2.3% at a concentration of 30 ppm. In flotation tests with a sample of graphite, MIBC produced higher recoveries.Escola de Minas2014-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672014000100013Rem: Revista Escola de Minas v.67 n.1 2014reponame:REM. Revista Escola de Minas (Online)instname:Escola de Minasinstacron:ESCOLA DE MINAS10.1590/S0370-44672014000100013info:eu-repo/semantics/openAccessVeras,Moacir MedeirosBaltar,Carlos Adolpho MagalhãesPaulo,João Bosco de AraújoLeite,José Yvan Pereiraeng2014-04-17T00:00:00Zoai:scielo:S0370-44672014000100013Revistahttp://www.scielo.br/remhttps://old.scielo.br/oai/scielo-oai.phpeditor@rem.com.br1807-03530370-4467opendoar:2014-04-17T00:00REM. Revista Escola de Minas (Online) - Escola de Minasfalse |
dc.title.none.fl_str_mv |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique |
title |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique |
spellingShingle |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique Veras,Moacir Medeiros flotation frother froth control coalescence surface tension froth stability |
title_short |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique |
title_full |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique |
title_fullStr |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique |
title_full_unstemmed |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique |
title_sort |
Comparative study of the main flotation frothers using a new HYDROMESS adapted technique |
author |
Veras,Moacir Medeiros |
author_facet |
Veras,Moacir Medeiros Baltar,Carlos Adolpho Magalhães Paulo,João Bosco de Araújo Leite,José Yvan Pereira |
author_role |
author |
author2 |
Baltar,Carlos Adolpho Magalhães Paulo,João Bosco de Araújo Leite,José Yvan Pereira |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Veras,Moacir Medeiros Baltar,Carlos Adolpho Magalhães Paulo,João Bosco de Araújo Leite,José Yvan Pereira |
dc.subject.por.fl_str_mv |
flotation frother froth control coalescence surface tension froth stability |
topic |
flotation frother froth control coalescence surface tension froth stability |
description |
Stability of bubble size in the pulp zone and froth control is an important parameter for a successful flotation process. The present study compares the action of the main frothers in terms of: mean bubble size in the pulp zone, froth stability, surface-tension-lowering ability and reagent participation in flotation of a naturally hydrophobic mineral. Bubble size was determined using a new technique adapted from HYDROMESS, a device designed to measure drop size. The remaining indicators were obtained by determining surface tension and conducting flotation tests with the addition of hydrophobic (graphite) and hydrophilic (calcite) particles. The results indicate that methyl isobutyl carbinol (MIBC) is the most efficient frother in controlling coalescence, with critical coalescence concentration (CCC) reached at 20 ppm. Moreover, this frother has greater potential for selective action, since it increased calcite entrainment by only 2.3% at a concentration of 30 ppm. In flotation tests with a sample of graphite, MIBC produced higher recoveries. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672014000100013 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672014000100013 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0370-44672014000100013 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Escola de Minas |
publisher.none.fl_str_mv |
Escola de Minas |
dc.source.none.fl_str_mv |
Rem: Revista Escola de Minas v.67 n.1 2014 reponame:REM. Revista Escola de Minas (Online) instname:Escola de Minas instacron:ESCOLA DE MINAS |
instname_str |
Escola de Minas |
instacron_str |
ESCOLA DE MINAS |
institution |
ESCOLA DE MINAS |
reponame_str |
REM. Revista Escola de Minas (Online) |
collection |
REM. Revista Escola de Minas (Online) |
repository.name.fl_str_mv |
REM. Revista Escola de Minas (Online) - Escola de Minas |
repository.mail.fl_str_mv |
editor@rem.com.br |
_version_ |
1754122198687154176 |