Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior de Tecnologia e Gestão >
Tecnologia Química e Biológica >
DTQB - Artigos em Revistas Indexados ao ISI/Scopus >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/1858

Título: Acid leaching of alloys within the quaternary system Fe-Si-Ca-Al
Autor: Margarido, F.
Figueiredo, M.O.
Queiroz, A.M.
Martins, J.P.
Palavras-chave: Acid leaching refining
Synthesised alloys
Issue Date: 1997
Editora: ACS
Citação: Margarido, F.; Figueiredo, M.O.; Queiroz, A.M.; Martins, J.I. (1997) - Acid leaching of alloys within the quaternary system Fe-Si-Ca-Al. Industrial & Engineering Chemistry Research. ISSN 0888-5885. 36:12 p.5291–5295
Resumo: Silicon with high purity and fine particle size can be produced by acid leaching of Fe-Si industrial alloys under the condition that they have adequate chemical composition and structural constitution. Such alloys contain phases that fall within the system Fe-Si-Ca-Al, where the quaternary phase Caalsifer, with aproximate formula (Fe0.8Al0.1 0.1) (Si0.8Ca0.2)2, is found along with several binary and ternary phases (Fe-Si, Ca-Si, Al-Fe-Si, Ca-Al-Si). With the purpose of optimizing the phase, constitution alloys were synthesized within the system Fe-Si-Ca-Al. The results of leaching experiments performed using HCl (150 and 220g/L) at constant temperature (T=102 1 C) and ordinary atmosphere indicate that the Caalsifer plus Al-Fe-Si phases should be maximized whereas the FeSi2 phases should be minimized, by controlling Al/Ca and Fe/Si concentration ratios in the synthesis process.
URI: http://hdl.handle.net/10198/1858
ISSN: 0888-5885
1520-5045
Versão do Editor: http://pubs.acs.org/journal/iecred
Appears in Collections:DTQB - Artigos em Revistas Indexados ao ISI/Scopus

Files in This Item:

File Description SizeFormat
AMQ_Ind_Eng_Chem_Res.pdf261,75 kBAdobe PDFView/Open
Restrict Access. You can request a copy!
AMQ_Ind_Eng_Chem_Res - resumo.pdf38,9 kBAdobe PDFView/Open
Statistics
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 


© Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
Promotores do RCAAP   Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência PO Sociedade do Conhecimento (POSC) Portal oficial da União Europeia