Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | REM - International Engineering Journal |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2021000100075 |
Resumo: | Abstract Low-grade manganese ores that are composed of manganese oxides, wad, quartz, iron oxides, gibbsite, and especially of spessartine (Mn3Al2(SiO4)3) are known as gondite. Spessartine is a mineral with a high content of silica (SiO2) and alumina (Al2O3) that causes a decrease of the enrichment in manganese oxide concentrates by flotation, giving this ore more complexity for processing. Thus, by ensuring a higher selectivity between manganese oxides minerals and silicates, the use of gondite reserves becomes viable, and the correct reagent type can be useful for this objective. Moreover, there are few publications devoted to the study of spessartine in flotation. So, this study investigated the effects of Mn2+ ions on quartz and spessartine depression and showed positive results with the reduction of quartz floatability from 7.06% to 1.23% and the spessartine from 27.30% to 17.12% respectively when the Mn2+ (1000 mg/L) was added previously to the depressant. Zeta potential determinations showed that Mn2+ can act as a silicate activator, possibly by facilitating the SiO(OH)3 - adsorption. Infrared spectroscopy analysis revealed absorption bands at 3,450 cm-1 and 3,400 cm-1 frequency for quartz and spessartine and the adsorption of Mn(OH)2 was responsible for this result. |
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Influence of Mn2+ ions on depression of quartz and spessartine in gondite oredepressant reagentsMn2+ ionsspessartinequartzgondite oreAbstract Low-grade manganese ores that are composed of manganese oxides, wad, quartz, iron oxides, gibbsite, and especially of spessartine (Mn3Al2(SiO4)3) are known as gondite. Spessartine is a mineral with a high content of silica (SiO2) and alumina (Al2O3) that causes a decrease of the enrichment in manganese oxide concentrates by flotation, giving this ore more complexity for processing. Thus, by ensuring a higher selectivity between manganese oxides minerals and silicates, the use of gondite reserves becomes viable, and the correct reagent type can be useful for this objective. Moreover, there are few publications devoted to the study of spessartine in flotation. So, this study investigated the effects of Mn2+ ions on quartz and spessartine depression and showed positive results with the reduction of quartz floatability from 7.06% to 1.23% and the spessartine from 27.30% to 17.12% respectively when the Mn2+ (1000 mg/L) was added previously to the depressant. Zeta potential determinations showed that Mn2+ can act as a silicate activator, possibly by facilitating the SiO(OH)3 - adsorption. Infrared spectroscopy analysis revealed absorption bands at 3,450 cm-1 and 3,400 cm-1 frequency for quartz and spessartine and the adsorption of Mn(OH)2 was responsible for this result.Fundação Gorceix2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2021000100075REM - International Engineering Journal v.74 n.1 2021reponame:REM - International Engineering Journalinstname:Fundação Gorceix (FG)instacron:FG10.1590/0370-44672019740168info:eu-repo/semantics/openAccessJosé,Fábio de SãoRodrigues,Guilherme Henrique GualandiPereira,Carlos Albertoeng2021-01-11T00:00:00Zoai:scielo:S2448-167X2021000100075Revistahttps://www.rem.com.br/?lang=pt-brPRIhttps://old.scielo.br/oai/scielo-oai.php||editor@rem.com.br2448-167X2448-167Xopendoar:2021-01-11T00:00REM - International Engineering Journal - Fundação Gorceix (FG)false |
dc.title.none.fl_str_mv |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore |
title |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore |
spellingShingle |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore José,Fábio de São depressant reagents Mn2+ ions spessartine quartz gondite ore |
title_short |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore |
title_full |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore |
title_fullStr |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore |
title_full_unstemmed |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore |
title_sort |
Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore |
author |
José,Fábio de São |
author_facet |
José,Fábio de São Rodrigues,Guilherme Henrique Gualandi Pereira,Carlos Alberto |
author_role |
author |
author2 |
Rodrigues,Guilherme Henrique Gualandi Pereira,Carlos Alberto |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
José,Fábio de São Rodrigues,Guilherme Henrique Gualandi Pereira,Carlos Alberto |
dc.subject.por.fl_str_mv |
depressant reagents Mn2+ ions spessartine quartz gondite ore |
topic |
depressant reagents Mn2+ ions spessartine quartz gondite ore |
description |
Abstract Low-grade manganese ores that are composed of manganese oxides, wad, quartz, iron oxides, gibbsite, and especially of spessartine (Mn3Al2(SiO4)3) are known as gondite. Spessartine is a mineral with a high content of silica (SiO2) and alumina (Al2O3) that causes a decrease of the enrichment in manganese oxide concentrates by flotation, giving this ore more complexity for processing. Thus, by ensuring a higher selectivity between manganese oxides minerals and silicates, the use of gondite reserves becomes viable, and the correct reagent type can be useful for this objective. Moreover, there are few publications devoted to the study of spessartine in flotation. So, this study investigated the effects of Mn2+ ions on quartz and spessartine depression and showed positive results with the reduction of quartz floatability from 7.06% to 1.23% and the spessartine from 27.30% to 17.12% respectively when the Mn2+ (1000 mg/L) was added previously to the depressant. Zeta potential determinations showed that Mn2+ can act as a silicate activator, possibly by facilitating the SiO(OH)3 - adsorption. Infrared spectroscopy analysis revealed absorption bands at 3,450 cm-1 and 3,400 cm-1 frequency for quartz and spessartine and the adsorption of Mn(OH)2 was responsible for this result. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 |
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=S2448-167X2021000100075 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2021000100075 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0370-44672019740168 |
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 |
Fundação Gorceix |
publisher.none.fl_str_mv |
Fundação Gorceix |
dc.source.none.fl_str_mv |
REM - International Engineering Journal v.74 n.1 2021 reponame:REM - International Engineering Journal instname:Fundação Gorceix (FG) instacron:FG |
instname_str |
Fundação Gorceix (FG) |
instacron_str |
FG |
institution |
FG |
reponame_str |
REM - International Engineering Journal |
collection |
REM - International Engineering Journal |
repository.name.fl_str_mv |
REM - International Engineering Journal - Fundação Gorceix (FG) |
repository.mail.fl_str_mv |
||editor@rem.com.br |
_version_ |
1754734691861135360 |