Influence of slag composition and oxygen potential on thermodynamic behavior of vanadium in FeO-TiO2-MgO-SiO2-Al2O3 smelting slag and molten iron
DC Field | Value | Language |
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dc.contributor.author | Heo, Jungho | - |
dc.contributor.author | Lee, Yumin | - |
dc.contributor.author | Park, Hyunsik | - |
dc.contributor.author | Park, Joo Hyun | - |
dc.date.accessioned | 2022-07-18T01:29:17Z | - |
dc.date.available | 2022-07-18T01:29:17Z | - |
dc.date.issued | 2021-11 | - |
dc.identifier.issn | 2238-7854 | - |
dc.identifier.issn | 2214-0697 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/108116 | - |
dc.description.abstract | The influence of slag composition of FeO/TiO2 (=F/T) ratio, Al2O3/(SiO2 +Al2O3) (=A/(S+A)) ratio and oxygen partial pressure (po(2) = 10(-10) to 10(-9) atm) on the thermodynamic behavior of vanadium oxide in molten ilmenite smelting slag, i.e., FetO-TiO2-MgO-Al2O3 -SiO2 system, was investigated at 1550 degrees C. The distribution ratio of vanadium (=L-v) between molten iron and FetO-TiO2-MgO-Al2O3-SiO2 slag increases with increasing F/T ratio, while it decreases with increasing A/(S+A) ratio. In addition, logL(v) generally increases with increasing theoretical optical basicity of the slag (=Lambda(slag)). Vanadium oxide (VOx) is expected to behave as an acidic component in the present system. Vanadium in ilmenite smelting slags primarily consist of V3+, V4+, and V5+ ions, as determined by Gaussian deconvolution of X-ray photoelectron spectra. A linear relationship between log (wt%V4+/wt%V3+) and logpo(2) is confirmed. Both (wt% V-3(-)) and (wt% V5+) ions increase with increasing F/T ratio, whereas (wt% V4+) ions show the opposite behavior with increasing F/T ratio, irrespective of A/(S+A) ratio. Meanwhile, (wt% V3+) increase while (wt% V4+) and (wt% V5+) decrease with increasing A/(S+A) ratio. The linear relationship between log (wt%V3+/wt%V5+) and log (wt% V4+) has a slope of 1.8, which is good agreement with the theoretical slope of 2.0, which indicates that multi-valent vanadium ion species, i.e., V3+, V4+, and V5+, are thermodynamically balanced based on redox equilibria. (C) 2021 The Author(s). Published by Elsevier B.V. | - |
dc.format.extent | 10 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier Editora Ltda | - |
dc.title | Influence of slag composition and oxygen potential on thermodynamic behavior of vanadium in FeO-TiO2-MgO-SiO2-Al2O3 smelting slag and molten iron | - |
dc.type | Article | - |
dc.publisher.location | 네델란드 | - |
dc.identifier.doi | 10.1016/j.jmrt.2021.11.035 | - |
dc.identifier.scopusid | 2-s2.0-85119511358 | - |
dc.identifier.wosid | 000729961100007 | - |
dc.identifier.bibliographicCitation | Journal of Materials Research and Technology, v.15, pp 5723 - 5732 | - |
dc.citation.title | Journal of Materials Research and Technology | - |
dc.citation.volume | 15 | - |
dc.citation.startPage | 5723 | - |
dc.citation.endPage | 5732 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | OPTICAL BASICITY | - |
dc.subject.keywordPlus | LIQUID-IRON | - |
dc.subject.keywordPlus | HOT METAL | - |
dc.subject.keywordPlus | TITANIUM | - |
dc.subject.keywordPlus | EQUILIBRIA | - |
dc.subject.keywordPlus | PHOSPHORUS | - |
dc.subject.keywordPlus | NIOBIUM | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.subject.keywordPlus | MELTS | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordAuthor | Vanadium oxide | - |
dc.subject.keywordAuthor | Ilmenite smelting slag | - |
dc.subject.keywordAuthor | Vanadium distribution ratio | - |
dc.subject.keywordAuthor | Valence of vanadium ions | - |
dc.subject.keywordAuthor | Redox equilibria | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S2238785421013144?via%3Dihub | - |
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