Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)

Detalhes bibliográficos
Autor(a) principal: Ghedin,Sara C. D.
Data de Publicação: 2022
Outros Autores: Pedroso,Gabriela J., C. B. Neto,João, Preve,Natália B., Gondoreck,Gabrieli G., Ely,Fernando, Angioletto,Elidio, Ourique,Fabrício, Ribeiro,Luiz F. B., Frizon,Tiago E. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762022000300242
Resumo: ABSTRACT Pyrite (FeS2) is one of the main tailings derived from coal mining. When processed, pyrite has several applications with high value-added, in contrast, if improperly discarded, it causes major environmental impacts, like the acid mine drainage. For those reasons, the seeking for beneficiation techniques of Pyrite has been the target of numerous studies. One of the most employed techniques is the separation by density using heavy liquids, like bromoform, as a separation medium. In the present work, we propose the use of lithium heteropolytungstate (LST), a non-halogenated and non-toxic solution, as an alternative in the separation by density method. For the experiments, raw pyrite samples were collected from the tailings of coal extraction from a mining company in Santa Catarina, Brazil. After the separation process, the samples before and after the beneficiation were characterized by XRD, FTIR, and XRF techniques. The results revealed that the separation technique used in this work led to a significant increase in the concentration of pyrite, going from less than 10% in the raw sample and reaching almost 80% after processing. This impressive result reveals that LST represents a promising alternative for separating pyrite by density techniques, showing much greater effectiveness than other heavy liquids used in the literature, in addition to being environmentally friendly.
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spelling Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)SustainabilityHeavy LiquidBeneficiationMineral Waste TreatmentABSTRACT Pyrite (FeS2) is one of the main tailings derived from coal mining. When processed, pyrite has several applications with high value-added, in contrast, if improperly discarded, it causes major environmental impacts, like the acid mine drainage. For those reasons, the seeking for beneficiation techniques of Pyrite has been the target of numerous studies. One of the most employed techniques is the separation by density using heavy liquids, like bromoform, as a separation medium. In the present work, we propose the use of lithium heteropolytungstate (LST), a non-halogenated and non-toxic solution, as an alternative in the separation by density method. For the experiments, raw pyrite samples were collected from the tailings of coal extraction from a mining company in Santa Catarina, Brazil. After the separation process, the samples before and after the beneficiation were characterized by XRD, FTIR, and XRF techniques. The results revealed that the separation technique used in this work led to a significant increase in the concentration of pyrite, going from less than 10% in the raw sample and reaching almost 80% after processing. This impressive result reveals that LST represents a promising alternative for separating pyrite by density techniques, showing much greater effectiveness than other heavy liquids used in the literature, in addition to being environmentally friendly.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762022000300242Matéria (Rio de Janeiro) v.27 n.3 2022reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/1517-7076-rmat-2022-0169info:eu-repo/semantics/openAccessGhedin,Sara C. D.Pedroso,Gabriela J.C. B. Neto,JoãoPreve,Natália B.Gondoreck,Gabrieli G.Ely,FernandoAngioletto,ElidioOurique,FabrícioRibeiro,Luiz F. B.Frizon,Tiago E. A.eng2022-09-27T00:00:00Zoai:scielo:S1517-70762022000300242Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2022-09-27T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
title Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
spellingShingle Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
Ghedin,Sara C. D.
Sustainability
Heavy Liquid
Beneficiation
Mineral Waste Treatment
title_short Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
title_full Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
title_fullStr Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
title_full_unstemmed Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
title_sort Processing of pyrite derived from coal mining waste by density separation technique using lithium heteropolytungstate (LST)
author Ghedin,Sara C. D.
author_facet Ghedin,Sara C. D.
Pedroso,Gabriela J.
C. B. Neto,João
Preve,Natália B.
Gondoreck,Gabrieli G.
Ely,Fernando
Angioletto,Elidio
Ourique,Fabrício
Ribeiro,Luiz F. B.
Frizon,Tiago E. A.
author_role author
author2 Pedroso,Gabriela J.
C. B. Neto,João
Preve,Natália B.
Gondoreck,Gabrieli G.
Ely,Fernando
Angioletto,Elidio
Ourique,Fabrício
Ribeiro,Luiz F. B.
Frizon,Tiago E. A.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Ghedin,Sara C. D.
Pedroso,Gabriela J.
C. B. Neto,João
Preve,Natália B.
Gondoreck,Gabrieli G.
Ely,Fernando
Angioletto,Elidio
Ourique,Fabrício
Ribeiro,Luiz F. B.
Frizon,Tiago E. A.
dc.subject.por.fl_str_mv Sustainability
Heavy Liquid
Beneficiation
Mineral Waste Treatment
topic Sustainability
Heavy Liquid
Beneficiation
Mineral Waste Treatment
description ABSTRACT Pyrite (FeS2) is one of the main tailings derived from coal mining. When processed, pyrite has several applications with high value-added, in contrast, if improperly discarded, it causes major environmental impacts, like the acid mine drainage. For those reasons, the seeking for beneficiation techniques of Pyrite has been the target of numerous studies. One of the most employed techniques is the separation by density using heavy liquids, like bromoform, as a separation medium. In the present work, we propose the use of lithium heteropolytungstate (LST), a non-halogenated and non-toxic solution, as an alternative in the separation by density method. For the experiments, raw pyrite samples were collected from the tailings of coal extraction from a mining company in Santa Catarina, Brazil. After the separation process, the samples before and after the beneficiation were characterized by XRD, FTIR, and XRF techniques. The results revealed that the separation technique used in this work led to a significant increase in the concentration of pyrite, going from less than 10% in the raw sample and reaching almost 80% after processing. This impressive result reveals that LST represents a promising alternative for separating pyrite by density techniques, showing much greater effectiveness than other heavy liquids used in the literature, in addition to being environmentally friendly.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
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=S1517-70762022000300242
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762022000300242
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1517-7076-rmat-2022-0169
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 Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.27 n.3 2022
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
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