Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions
Main Author: | |
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Publication Date: | 2002 |
Other Authors: | , |
Format: | Article |
Language: | eng |
Source: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Download full: | http://hdl.handle.net/10198/1498 |
Summary: | A systematic study of synthesis of different chemical composition of alloys within the quaternary Fe-Si-Ca-Al system, versus acid leaching refining using HCl with or without FeCl3 has been undertaken. Such study has the aim of achieving an adequate structural composition of Fe-Si alloys, in order to obtain high purity and fine particle size silicon by acid leaching, at more reduced costs. The experimental results show that an adequate control of Fe/Al and Si/Ca concentration ratios can hinder the formation of tetragonal and orthorhombic FeSi2 phases, and consequently promotes a successful refining of ferro-silicon alloys. The presence of ferric ion influences on a distinct way the rate of removal of Al-Fe-Si and Fe-Al-Si-Ca phases, increasing the first and decreasing the second one. The suitable starting composition which could give the expected results must be the following: 92-94% Si; 3-3.5% Fe; 3.5-4% Al and Ca ≤ 0.5%. |
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Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ionsAcid leaching refiningSynthesised alloysA systematic study of synthesis of different chemical composition of alloys within the quaternary Fe-Si-Ca-Al system, versus acid leaching refining using HCl with or without FeCl3 has been undertaken. Such study has the aim of achieving an adequate structural composition of Fe-Si alloys, in order to obtain high purity and fine particle size silicon by acid leaching, at more reduced costs. The experimental results show that an adequate control of Fe/Al and Si/Ca concentration ratios can hinder the formation of tetragonal and orthorhombic FeSi2 phases, and consequently promotes a successful refining of ferro-silicon alloys. The presence of ferric ion influences on a distinct way the rate of removal of Al-Fe-Si and Fe-Al-Si-Ca phases, increasing the first and decreasing the second one. The suitable starting composition which could give the expected results must be the following: 92-94% Si; 3-3.5% Fe; 3.5-4% Al and Ca ≤ 0.5%.Taylor and FrancisBiblioteca Digital do IPBQueiroz, AnaMargarido, FernandaMartins, J.P.2010-01-27T16:31:25Z20022002-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/1498engQueiroz, A.M.; Margarido, F.; Martins, J.P. (2002). Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions. Mineral Processing and Extractive Metallurgy Review. ISSN 1547-7401. 22:4-6 p.303-3221547-7401DOI: 10.1080/08827500208547418info: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:RCAAP2023-11-21T10:05:40Zoai:bibliotecadigital.ipb.pt:10198/1498Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:55:06.654938Repositório 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 |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions |
title |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions |
spellingShingle |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions Queiroz, Ana Acid leaching refining Synthesised alloys |
title_short |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions |
title_full |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions |
title_fullStr |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions |
title_full_unstemmed |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions |
title_sort |
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions |
author |
Queiroz, Ana |
author_facet |
Queiroz, Ana Margarido, Fernanda Martins, J.P. |
author_role |
author |
author2 |
Margarido, Fernanda Martins, J.P. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Queiroz, Ana Margarido, Fernanda Martins, J.P. |
dc.subject.por.fl_str_mv |
Acid leaching refining Synthesised alloys |
topic |
Acid leaching refining Synthesised alloys |
description |
A systematic study of synthesis of different chemical composition of alloys within the quaternary Fe-Si-Ca-Al system, versus acid leaching refining using HCl with or without FeCl3 has been undertaken. Such study has the aim of achieving an adequate structural composition of Fe-Si alloys, in order to obtain high purity and fine particle size silicon by acid leaching, at more reduced costs. The experimental results show that an adequate control of Fe/Al and Si/Ca concentration ratios can hinder the formation of tetragonal and orthorhombic FeSi2 phases, and consequently promotes a successful refining of ferro-silicon alloys. The presence of ferric ion influences on a distinct way the rate of removal of Al-Fe-Si and Fe-Al-Si-Ca phases, increasing the first and decreasing the second one. The suitable starting composition which could give the expected results must be the following: 92-94% Si; 3-3.5% Fe; 3.5-4% Al and Ca ≤ 0.5%. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002 2002-01-01T00:00:00Z 2010-01-27T16:31:25Z |
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/10198/1498 |
url |
http://hdl.handle.net/10198/1498 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Queiroz, A.M.; Margarido, F.; Martins, J.P. (2002). Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions. Mineral Processing and Extractive Metallurgy Review. ISSN 1547-7401. 22:4-6 p.303-322 1547-7401 DOI: 10.1080/08827500208547418 |
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 |
Taylor and Francis |
publisher.none.fl_str_mv |
Taylor and Francis |
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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1799135152914300928 |