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Vanadium Extraction from a Fe–V (2.0 Mass%)–P (0.1 Mass%) Melt and Investigation of the Phase Relations in the Formed FeO–SiO 2 -Based Slag with 20 Mass% V
RISE, Swerea, MEFOS.
Pöyry Finland Oy, Finland.
KTH Royal Institute of Technology, Sweden.
RISE, Swerea, MEFOS.
Show others and affiliations
2017 (English)In: Journal of Sustainable Metallurgy, ISSN 2199-3823, Vol. 3, no 4, p. 808-822Article in journal (Refereed) Published
Abstract [en]

An innovative and sustainable way for production of vanadium is to co-process vanadium titanomagnetite ores with vanadium-bearing slag from steel industry, via reduction, producing a hot metal containing about 2 mass% vanadium, 0.1 mass% phosphorus, and 0.4 mass% silicon. A vanadium-extraction method was developed for these hot metals using a semi-industrial-scale converter. Oxidation was carried out with an air jet enriched to 50 vol% oxygen and by top-charging up to 70 kg iron ore pellets per ton hot metal. The complete dissolution of pellets was achieved by deliberately creating good stirring conditions utilizing high momentary decarburization rates. The temperature could be controlled to around 1677 K at the blowing endpoint after the pellet coolant had been dissolved. Produced vanadium slags contained as high as 20 mass% V. The semifinished product contained about 3 mass% carbon and 0.1 mass% vanadium, corresponding to a vanadium yield of 94%. The phosphorus distribution to the slag was low when good stirring was maintained. The slag composition had a more significant impact than the temperature on the vanadium distribution. Laboratory-scale study also showed that the temperature impact on the composition of the liquid phase was minor. © 2017, The Author(s).

Place, publisher, year, edition, pages
Springer , 2017. Vol. 3, no 4, p. 808-822
Keywords [en]
Converter, Distribution, Experimental, Phase relationship, Slag, Spinel, Sustainable, Vanadium
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-41091DOI: 10.1007/s40831-017-0147-zScopus ID: 2-s2.0-85064177571OAI: oai:DiVA.org:ri-41091DiVA, id: diva2:1377206
Note

Funding details: VINNOVA; Funding text 1: Acknowledgements Funding from Mustavaaran Kaivos Oy and ERA-MIN, the ERA-NET program on the Industrial Handling of Raw Materials for European industries and supported by the European Commission’s 7th Framework Program, via VINNOVA, Sweden’s innovation agency, are gratefully acknowledged. Special thanks to Jukka Pitkäjärvi and Kyösti Heinänen of Mustavaaran Kaivos Oy for their support.

Available from: 2019-12-11 Created: 2019-12-11 Last updated: 2019-12-11Bibliographically approved

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