Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite
Autor(a) principal: | |
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Data de Publicação: | 2015 |
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=S0370-44672015000400463 |
Resumo: | Abstract Silicates (rhodonite, tephroite, spessartine) and the carbonate (rhodochrosite) of manganese are of economic interest in silicate-carbonated manganese ores. The recovery of both mineral classes by flotation constitutes a challenge; rhodochrosite is a slightly soluble mineral that can release Mn2+ ions in pulp. In this work, the effects of inorganic and organic depressants on the cationic flotation at pH 10 with ether amine acetate and the surface charges of rhodonite and rhodochrosite have been investigated. For rhodonite, the influence of Mn2+ species on its recovery and surface charge at the conditions of maximum yield with amine has also been investigated. The organic depressants, especially the corn starch, were more effective depressants for both minerals. The poor recovery of rhodonite conditioned with MnCl2 is probably related to the colloidal Mn(OH)2 deposition on mineral surface. The increase in the rhodochrosite recovery with increasing water glass content is probably related to its negative value of species adsorbed on the mineral surface, since the rhodochrosite zeta potential, conditioned with this reagent, becomes more negative compared with the mineral without reagent, which attracts the ether ammonium. |
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Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrositeRhodoniterhodochrositecationic flotationinorganic and organic depressantsmanganese ionsAbstract Silicates (rhodonite, tephroite, spessartine) and the carbonate (rhodochrosite) of manganese are of economic interest in silicate-carbonated manganese ores. The recovery of both mineral classes by flotation constitutes a challenge; rhodochrosite is a slightly soluble mineral that can release Mn2+ ions in pulp. In this work, the effects of inorganic and organic depressants on the cationic flotation at pH 10 with ether amine acetate and the surface charges of rhodonite and rhodochrosite have been investigated. For rhodonite, the influence of Mn2+ species on its recovery and surface charge at the conditions of maximum yield with amine has also been investigated. The organic depressants, especially the corn starch, were more effective depressants for both minerals. The poor recovery of rhodonite conditioned with MnCl2 is probably related to the colloidal Mn(OH)2 deposition on mineral surface. The increase in the rhodochrosite recovery with increasing water glass content is probably related to its negative value of species adsorbed on the mineral surface, since the rhodochrosite zeta potential, conditioned with this reagent, becomes more negative compared with the mineral without reagent, which attracts the ether ammonium.Escola de Minas2015-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000400463Rem: Revista Escola de Minas v.68 n.4 2015reponame:REM. Revista Escola de Minas (Online)instname:Escola de Minasinstacron:ESCOLA DE MINAS10.1590/0370-44672015680019info:eu-repo/semantics/openAccessDuarte,Renata SantosLima,Rosa Malena FernandesLeão,Versiane Albiseng2015-11-17T00:00:00Zoai:scielo:S0370-44672015000400463Revistahttp://www.scielo.br/remhttps://old.scielo.br/oai/scielo-oai.phpeditor@rem.com.br1807-03530370-4467opendoar:2015-11-17T00:00REM. Revista Escola de Minas (Online) - Escola de Minasfalse |
dc.title.none.fl_str_mv |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite |
title |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite |
spellingShingle |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite Duarte,Renata Santos Rhodonite rhodochrosite cationic flotation inorganic and organic depressants manganese ions |
title_short |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite |
title_full |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite |
title_fullStr |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite |
title_full_unstemmed |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite |
title_sort |
Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite |
author |
Duarte,Renata Santos |
author_facet |
Duarte,Renata Santos Lima,Rosa Malena Fernandes Leão,Versiane Albis |
author_role |
author |
author2 |
Lima,Rosa Malena Fernandes Leão,Versiane Albis |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Duarte,Renata Santos Lima,Rosa Malena Fernandes Leão,Versiane Albis |
dc.subject.por.fl_str_mv |
Rhodonite rhodochrosite cationic flotation inorganic and organic depressants manganese ions |
topic |
Rhodonite rhodochrosite cationic flotation inorganic and organic depressants manganese ions |
description |
Abstract Silicates (rhodonite, tephroite, spessartine) and the carbonate (rhodochrosite) of manganese are of economic interest in silicate-carbonated manganese ores. The recovery of both mineral classes by flotation constitutes a challenge; rhodochrosite is a slightly soluble mineral that can release Mn2+ ions in pulp. In this work, the effects of inorganic and organic depressants on the cationic flotation at pH 10 with ether amine acetate and the surface charges of rhodonite and rhodochrosite have been investigated. For rhodonite, the influence of Mn2+ species on its recovery and surface charge at the conditions of maximum yield with amine has also been investigated. The organic depressants, especially the corn starch, were more effective depressants for both minerals. The poor recovery of rhodonite conditioned with MnCl2 is probably related to the colloidal Mn(OH)2 deposition on mineral surface. The increase in the rhodochrosite recovery with increasing water glass content is probably related to its negative value of species adsorbed on the mineral surface, since the rhodochrosite zeta potential, conditioned with this reagent, becomes more negative compared with the mineral without reagent, which attracts the ether ammonium. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-01 |
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=S0370-44672015000400463 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000400463 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0370-44672015680019 |
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.68 n.4 2015 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_ |
1754122199047864320 |