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Vaporization Studies from Slag Surfaces Using a Thin Film Technique
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2013 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 44, no 4, 783-788 p.Article in journal (Refereed) Published
Abstract [en]

The investigations of vanadium vaporization from CaO-SiO2-FeO-V2O5 thin film slags were conducted using the single hot thermocouple technique (SHTT) with air as the oxidizing atmosphere. The slag samples were analyzed after the experiments by SEM/EDX. The vanadium content was found to decrease as a function of time. The loss of vanadium from the slag film after 30 minutes of oxidation was approximately 18 pct and after 50 minutes, it was nearly 56 pct. The possible mechanism of vanadium loss would be the surface oxidation of vanadium oxide in the slag, VO (x) to V5+, followed by surface evaporation of V2O5, which has a high vapor pressure at the experimental temperature.

Place, publisher, year, edition, pages
2013. Vol. 44, no 4, 783-788 p.
Keyword [en]
Function of time, Hot thermocouple, Oxidizing atmosphere, Possible mechanisms, Surface evaporation, Surface oxidations, Thin-film technique, Vanadium content
National Category
Metallurgy and Metallic Materials
URN: urn:nbn:se:kth:diva-125842DOI: 10.1007/s11663-013-9865-1ISI: 000321669900001ScopusID: 2-s2.0-84880316866OAI: diva2:641071

QC 20130815

Available from: 2013-08-15 Created: 2013-08-15 Last updated: 2013-08-15Bibliographically approved

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Seetharaman, Seshadri
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