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Vanadium oxide solubility in CaO–SiO2–VOX system
LKAB Research and Development.
Swerea MEFOS AB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
LKAB, LKAB Research and Development.
Number of Authors: 42017 (English)In: Ironmaking & steelmaking, ISSN 0301-9233, E-ISSN 1743-2812, Vol. 44, no 1, p. 42-51Article in journal (Refereed) Published
Abstract [en]

The solubility of vanadium oxide in the SiO2–CaO–VOX system was investigated as a function of basicity (CaO/SiO2) at a fixed temperature of 1600°C and oxygen partial pressure of 10−10 atm. Formed phases and microstructures of saturated samples were identified with SEM–EDS analysis and XRD. Maximum solubility of vanadium oxide was between 15 and 20% independent of basicity. Pure karelianite (V2O3) was formed in all samples at saturation of vanadium oxide. The morphology of karelianite changed with the change in basicity in the slag, where needles or threads were formed for slags with basicity B2 = 0.54 and B2 = 0.67 and stars or dendritic patterns were formed with basicity B2 = 1.0 and B2 = 1.22. Wollastonite (CaSiO3) was also formed in the slags with star or dendritic patterns.

Place, publisher, year, edition, pages
2017. Vol. 44, no 1, p. 42-51
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-10667DOI: 10.1080/03019233.2016.1155841ISI: 000396712800007Scopus ID: 2-s2.0-84978536253Local ID: 98139ea0-4ac1-48cb-bd8a-ee6ef095de5eOAI: oai:DiVA.org:ltu-10667DiVA, id: diva2:983613
Note

Validerad; 2017; Nivå 2; 2016-12-20 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-11-20Bibliographically approved

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Björkman, Bo

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