Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites
Autor(a) principal: | |
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Data de Publicação: | 1998 |
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/1822/1537 |
Resumo: | Low-grade nickelliferous laterites are important sources of nickel and cobalt, since 80% of the world’s known reserves of nickel are associated with such types of deposits. Nickel can be produced by pyrometallurgical and hydrometallurgical routes. However, for the lower-grade lateritic ores, hydrometallurgical treatment seems to be favourable for the simultaneous recovery of nickel and cobalt, as far as plant economics and environmental aspects are concerned [1,2]. Sulphuric acid heap leaching, at ambient temperature, of a low-grade limonitic laterite Greek ore has been reported [3,4]. Despite the efficient extraction of nickel and cobalt, contamination of the pregnant leach solution with impurities is unavoidable. A typical chemical composition of leach liquors is given (table I). This shows that a significant amount of dissolved Fe, as well as other impurities such as Al, Cr, Mg, Na and K, are present in solution along with Ni and Co. Thus, before the electro-extraction of these metals, a prior solution purification step is required. |
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Purification of sulphuric acid solutions from the leaching of nickelliferous of lateritesLateritesHidrometalurgiaNiquelCobaltoLow-grade nickelliferous laterites are important sources of nickel and cobalt, since 80% of the world’s known reserves of nickel are associated with such types of deposits. Nickel can be produced by pyrometallurgical and hydrometallurgical routes. However, for the lower-grade lateritic ores, hydrometallurgical treatment seems to be favourable for the simultaneous recovery of nickel and cobalt, as far as plant economics and environmental aspects are concerned [1,2]. Sulphuric acid heap leaching, at ambient temperature, of a low-grade limonitic laterite Greek ore has been reported [3,4]. Despite the efficient extraction of nickel and cobalt, contamination of the pregnant leach solution with impurities is unavoidable. A typical chemical composition of leach liquors is given (table I). This shows that a significant amount of dissolved Fe, as well as other impurities such as Al, Cr, Mg, Na and K, are present in solution along with Ni and Co. Thus, before the electro-extraction of these metals, a prior solution purification step is required.Technicka Univerzita KosiceUniversidade do MinhoGuise, LúciaCastro, F.1998-011998-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1537eng"Acta Mettalurgica Slovaca". ISSN 1335-1532. 4 (Jan. 1998).1335-1532info: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:RCAAP2023-07-21T12:34:13Zoai:repositorium.sdum.uminho.pt:1822/1537Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:29:50.466453Repositório 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 |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites |
title |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites |
spellingShingle |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites Guise, Lúcia Laterites Hidrometalurgia Niquel Cobalto |
title_short |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites |
title_full |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites |
title_fullStr |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites |
title_full_unstemmed |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites |
title_sort |
Purification of sulphuric acid solutions from the leaching of nickelliferous of laterites |
author |
Guise, Lúcia |
author_facet |
Guise, Lúcia Castro, F. |
author_role |
author |
author2 |
Castro, F. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Guise, Lúcia Castro, F. |
dc.subject.por.fl_str_mv |
Laterites Hidrometalurgia Niquel Cobalto |
topic |
Laterites Hidrometalurgia Niquel Cobalto |
description |
Low-grade nickelliferous laterites are important sources of nickel and cobalt, since 80% of the world’s known reserves of nickel are associated with such types of deposits. Nickel can be produced by pyrometallurgical and hydrometallurgical routes. However, for the lower-grade lateritic ores, hydrometallurgical treatment seems to be favourable for the simultaneous recovery of nickel and cobalt, as far as plant economics and environmental aspects are concerned [1,2]. Sulphuric acid heap leaching, at ambient temperature, of a low-grade limonitic laterite Greek ore has been reported [3,4]. Despite the efficient extraction of nickel and cobalt, contamination of the pregnant leach solution with impurities is unavoidable. A typical chemical composition of leach liquors is given (table I). This shows that a significant amount of dissolved Fe, as well as other impurities such as Al, Cr, Mg, Na and K, are present in solution along with Ni and Co. Thus, before the electro-extraction of these metals, a prior solution purification step is required. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-01 1998-01-01T00:00:00Z |
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/1822/1537 |
url |
http://hdl.handle.net/1822/1537 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Acta Mettalurgica Slovaca". ISSN 1335-1532. 4 (Jan. 1998). 1335-1532 |
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 |
Technicka Univerzita Kosice |
publisher.none.fl_str_mv |
Technicka Univerzita Kosice |
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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
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 |
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1799132800234815488 |