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Comparative study of the main flotation frothers using a new HYDROMESS adapted technique

dc.creatorVeras, Moacir Medeiros
dc.creatorBaltar, Carlos Adolpho Magalhães
dc.creatorPaulo, João Bosco de Araújo
dc.creatorLeite, José Yvan Pereira
dc.date.accessioned2015-11-04T03:04:50Z
dc.date.available2014-03
dc.date.available2015-11-04T03:04:50Z
dc.date.issued2014-03
dc.identifier.citationVeras, Moacir Medeiros, Baltar, Carlos Adolpho Magalhães, Paulo, João Bosco de Araújo, & Leite, José Yvan Pereira. (2014). Comparative study of the main flotation frothers using a new HYDROMESS adapted technique. Rem: Revista Escola de Minas, 67(1), 87-92. Retrieved October 29, 2015, from http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672014000100013&lng=en&tlng=en.pt_BR
dc.identifier.issn0370-4467pt_BR
dc.identifier.urihttp://memoria.ifrn.edu.br/handle/1044/354
dc.description.abstractStability 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.pt_BR
dc.languageengpt_BR
dc.publisherInsitituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Nortept_BR
dc.relation.ispartofRevista Escola de Minaspt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectflotation, frother, froth control, coalescence, surface tension, froth stability.pt_BR
dc.titleComparative study of the main flotation frothers using a new HYDROMESS adapted techniquept_BR
dc.typeArtigo de Periódicopt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentNatal - Centralpt_BR
dc.publisher.initialsIFRNpt_BR
dc.subject.cnpqengenharia de minaspt_BR
dc.citation.volume67pt_BR
dc.citation.issue1pt_BR
dc.citation.spage87pt_BR
dc.citation.epage92pt_BR
dc.description.resumoStability 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.pt_BR


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