Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.9/3069 |
Resumo: | ABSTRACT: Lithium extraction from hard-rock ores has regained importance due to the increased demand for this metal to supply the growing battery market. Therefore, several studies have been focused on the lithium extraction from ores, however, leaching and purification steps are sparsely studied. Thus, the objective of this study was to evaluate the main factors affecting the water leaching step and the subsequent purification operations for lithium recovery from a lepidolite concentrate, which was processed by mechanical activation and sulphuric acid digestion. In the leaching step, among the variables studied, only one, the leaching temperature, showed a significant effect on the lithium extraction, taking into account the range of values tested. Thus, the recommended operating value for the leaching time and the L/S ratio is the minimum, while for the leaching temperature is 50°C. After optimizing the leaching operation, the purification of the leachate, by neutralization, was thoroughly performed by efficient removal of impurities (Fe, Al, Mn and Ca), allowing to obtain lithium carbonate as final product, as well as other relevant by-products, such as rubidium and potassium alums. |
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Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidoliteLeachingLithium-ion batteriesLepidoliteHydrometallurgyBattery recyclingValuable metalsABSTRACT: Lithium extraction from hard-rock ores has regained importance due to the increased demand for this metal to supply the growing battery market. Therefore, several studies have been focused on the lithium extraction from ores, however, leaching and purification steps are sparsely studied. Thus, the objective of this study was to evaluate the main factors affecting the water leaching step and the subsequent purification operations for lithium recovery from a lepidolite concentrate, which was processed by mechanical activation and sulphuric acid digestion. In the leaching step, among the variables studied, only one, the leaching temperature, showed a significant effect on the lithium extraction, taking into account the range of values tested. Thus, the recommended operating value for the leaching time and the L/S ratio is the minimum, while for the leaching temperature is 50°C. After optimizing the leaching operation, the purification of the leachate, by neutralization, was thoroughly performed by efficient removal of impurities (Fe, Al, Mn and Ca), allowing to obtain lithium carbonate as final product, as well as other relevant by-products, such as rubidium and potassium alums.ElsevierRepositório do LNEGVieceli, N.Nogueira, CarlosPereira, Manuel F. C.Durão, F.Guimarães, C.Margarido, F.2018-09-25T16:01:30Z2018-01-01T00:00:00Z2018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/3069engVieceli, N.; Nogueira, C.A.; Pereira, Manuel F.C...[et.al.]. - Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite. In: Hydrometallurgy, 2018, Vol. 175, p. 1-100304-386Xinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T12:28:27Zoai:repositorio.lneg.pt:10400.9/3069Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:36:13.745631Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite |
title |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite |
spellingShingle |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite Vieceli, N. Leaching Lithium-ion batteries Lepidolite Hydrometallurgy Battery recycling Valuable metals |
title_short |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite |
title_full |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite |
title_fullStr |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite |
title_full_unstemmed |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite |
title_sort |
Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite |
author |
Vieceli, N. |
author_facet |
Vieceli, N. Nogueira, Carlos Pereira, Manuel F. C. Durão, F. Guimarães, C. Margarido, F. |
author_role |
author |
author2 |
Nogueira, Carlos Pereira, Manuel F. C. Durão, F. Guimarães, C. Margarido, F. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Vieceli, N. Nogueira, Carlos Pereira, Manuel F. C. Durão, F. Guimarães, C. Margarido, F. |
dc.subject.por.fl_str_mv |
Leaching Lithium-ion batteries Lepidolite Hydrometallurgy Battery recycling Valuable metals |
topic |
Leaching Lithium-ion batteries Lepidolite Hydrometallurgy Battery recycling Valuable metals |
description |
ABSTRACT: Lithium extraction from hard-rock ores has regained importance due to the increased demand for this metal to supply the growing battery market. Therefore, several studies have been focused on the lithium extraction from ores, however, leaching and purification steps are sparsely studied. Thus, the objective of this study was to evaluate the main factors affecting the water leaching step and the subsequent purification operations for lithium recovery from a lepidolite concentrate, which was processed by mechanical activation and sulphuric acid digestion. In the leaching step, among the variables studied, only one, the leaching temperature, showed a significant effect on the lithium extraction, taking into account the range of values tested. Thus, the recommended operating value for the leaching time and the L/S ratio is the minimum, while for the leaching temperature is 50°C. After optimizing the leaching operation, the purification of the leachate, by neutralization, was thoroughly performed by efficient removal of impurities (Fe, Al, Mn and Ca), allowing to obtain lithium carbonate as final product, as well as other relevant by-products, such as rubidium and potassium alums. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-09-25T16:01:30Z 2018-01-01T00:00:00Z 2018-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.9/3069 |
url |
http://hdl.handle.net/10400.9/3069 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Vieceli, N.; Nogueira, C.A.; Pereira, Manuel F.C...[et.al.]. - Recovery of lithium carbonate by acid digestion and hydrometallurgical processing from mechanically activated lepidolite. In: Hydrometallurgy, 2018, Vol. 175, p. 1-10 0304-386X |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799130228072644608 |