Lead recovery by flotation with sodium lauryl sulfate

Detalhes bibliográficos
Autor(a) principal: Morais,Alessandra Gorette de
Data de Publicação: 2013
Outros Autores: Baltar,Carlos Adolpho Magalhães, Pereira,Carlos Alberto
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=S0370-44672013000100016
Resumo: Lead recoverable slag is of economic and environmental importance. The aim of this study was to assess the possibilities of its recovery by flotation with sodium lauryl sulfate (SLS). The similar nature of the lead and iron particles formed by solidification of the melted slag impairs selectivity during the flotation process. In order to verify the most favorable conditions for selectivity, SLS adsorption mechanisms for lead and iron particles were studied. The adsorption was monitored by means of zeta potential and surface tension determinations. Flotation tests were conducted under the most promising conditions identified for selectivity. The results suggest that SLS adsorption in lead particles is of a chemical nature. It was observed that the formation of lead lauryl sulfate is easier in alkaline medium. A 79% lead recovery was obtained at pH 10 using only 10-3 M collector concentration. Nevertheless, the best selectivity conditions were obtained in an acid medium.
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spelling Lead recovery by flotation with sodium lauryl sulfateFlotationmetallurgical slag flotationsodium lauryl sulfatesecondary leadrecycling of industrial wasteLead recoverable slag is of economic and environmental importance. The aim of this study was to assess the possibilities of its recovery by flotation with sodium lauryl sulfate (SLS). The similar nature of the lead and iron particles formed by solidification of the melted slag impairs selectivity during the flotation process. In order to verify the most favorable conditions for selectivity, SLS adsorption mechanisms for lead and iron particles were studied. The adsorption was monitored by means of zeta potential and surface tension determinations. Flotation tests were conducted under the most promising conditions identified for selectivity. The results suggest that SLS adsorption in lead particles is of a chemical nature. It was observed that the formation of lead lauryl sulfate is easier in alkaline medium. A 79% lead recovery was obtained at pH 10 using only 10-3 M collector concentration. Nevertheless, the best selectivity conditions were obtained in an acid medium.Escola de Minas2013-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672013000100016Rem: Revista Escola de Minas v.66 n.1 2013reponame:REM. Revista Escola de Minas (Online)instname:Escola de Minasinstacron:ESCOLA DE MINAS10.1590/S0370-44672013000100016info:eu-repo/semantics/openAccessMorais,Alessandra Gorette deBaltar,Carlos Adolpho MagalhãesPereira,Carlos Albertoeng2013-04-03T00:00:00Zoai:scielo:S0370-44672013000100016Revistahttp://www.scielo.br/remhttps://old.scielo.br/oai/scielo-oai.phpeditor@rem.com.br1807-03530370-4467opendoar:2013-04-03T00:00REM. Revista Escola de Minas (Online) - Escola de Minasfalse
dc.title.none.fl_str_mv Lead recovery by flotation with sodium lauryl sulfate
title Lead recovery by flotation with sodium lauryl sulfate
spellingShingle Lead recovery by flotation with sodium lauryl sulfate
Morais,Alessandra Gorette de
Flotation
metallurgical slag flotation
sodium lauryl sulfate
secondary lead
recycling of industrial waste
title_short Lead recovery by flotation with sodium lauryl sulfate
title_full Lead recovery by flotation with sodium lauryl sulfate
title_fullStr Lead recovery by flotation with sodium lauryl sulfate
title_full_unstemmed Lead recovery by flotation with sodium lauryl sulfate
title_sort Lead recovery by flotation with sodium lauryl sulfate
author Morais,Alessandra Gorette de
author_facet Morais,Alessandra Gorette de
Baltar,Carlos Adolpho Magalhães
Pereira,Carlos Alberto
author_role author
author2 Baltar,Carlos Adolpho Magalhães
Pereira,Carlos Alberto
author2_role author
author
dc.contributor.author.fl_str_mv Morais,Alessandra Gorette de
Baltar,Carlos Adolpho Magalhães
Pereira,Carlos Alberto
dc.subject.por.fl_str_mv Flotation
metallurgical slag flotation
sodium lauryl sulfate
secondary lead
recycling of industrial waste
topic Flotation
metallurgical slag flotation
sodium lauryl sulfate
secondary lead
recycling of industrial waste
description Lead recoverable slag is of economic and environmental importance. The aim of this study was to assess the possibilities of its recovery by flotation with sodium lauryl sulfate (SLS). The similar nature of the lead and iron particles formed by solidification of the melted slag impairs selectivity during the flotation process. In order to verify the most favorable conditions for selectivity, SLS adsorption mechanisms for lead and iron particles were studied. The adsorption was monitored by means of zeta potential and surface tension determinations. Flotation tests were conducted under the most promising conditions identified for selectivity. The results suggest that SLS adsorption in lead particles is of a chemical nature. It was observed that the formation of lead lauryl sulfate is easier in alkaline medium. A 79% lead recovery was obtained at pH 10 using only 10-3 M collector concentration. Nevertheless, the best selectivity conditions were obtained in an acid medium.
publishDate 2013
dc.date.none.fl_str_mv 2013-03-01
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=S0370-44672013000100016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672013000100016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0370-44672013000100016
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.66 n.1 2013
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
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