Publication
Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions
| dc.contributor.author | Queiroz, Ana | |
| dc.contributor.author | Margarido, Fernanda | |
| dc.contributor.author | Martins, J.P. | |
| dc.date.accessioned | 2010-01-27T16:31:25Z | |
| dc.date.available | 2010-01-27T16:31:25Z | |
| dc.date.issued | 2002 | |
| dc.description.abstract | 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%. | pt |
| dc.identifier.citation | 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 | pt |
| dc.identifier.issn | 1547-7401 | |
| dc.identifier.other | DOI: 10.1080/08827500208547418 | |
| dc.identifier.uri | http://hdl.handle.net/10198/1498 | |
| dc.language.iso | eng | pt |
| dc.publisher | Taylor and Francis | pt |
| dc.subject | Acid leaching refining | pt |
| dc.subject | Synthesised alloys | pt |
| dc.title | Acid refining of synthesised alloys within the quaternary system Fe-Si-Ca-Al: effect of ferric ions | pt |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 322 | pt |
| oaire.citation.startPage | 303 | pt |
| oaire.citation.title | Mineral Processing and Extractive Metallurgy Review | pt |
| person.familyName | Queiroz | |
| person.givenName | Ana | |
| person.identifier.ciencia-id | 2611-D40C-3472 | |
| person.identifier.orcid | 0000-0003-4761-0618 | |
| person.identifier.rid | O-8367-2015 | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article | pt |
| relation.isAuthorOfPublication | 508436a2-5db1-481e-9c48-eab160333d61 | |
| relation.isAuthorOfPublication.latestForDiscovery | 508436a2-5db1-481e-9c48-eab160333d61 |