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Possibility of selective oxidation of vanadium from iron and phosphorus in Fe-V-P melt
RISE, Swerea, Swerea MEFOS.
LKAB Technology and Business Development.
RISE, Swerea, Swerea MEFOS.
RISE, Swerea, Swerea MEFOS.
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2010 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 81, no 2, p. 105-111Article in journal (Refereed)
Abstract [en]

Experiments on a vanadium recovery method from vanadium containing BOF-slag using both a Tamman furnace (3 kg scale) and an induction furnace (150 kg scale) were conducted. The vanadium was extracted into the slag phase by bubbling oxidation gas into a metal bath consisting mainly of V (1-10 mass%), Si (less than 1 mass%) and P (about 1 mass%). The first experiments revealed that the slag formed during oxidation reaction had considerably high phosphate capacity. High phosphorus content would rule out the possibility of using the slag as a raw material for the production of ferrovanadium of high quality. In order to reduce the P-content in the slag, addition of slag former to reduce phosphate capacity was necessary. A suitable slag system (having the initial composition 40 mass% Al2O3 - 25 mass% CaO - 35 mass% SiO2) and a suitable atmosphere, by using CO2, that enhanced the oxidation of vanadium, but limit the oxidation of iron and phosphorus was found. However, more efforts should be put forward, e.g. study of the phase diagram, the viscosity of the slag and even oxide activities to gain more insight into the slag formed by selective oxidation. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Place, publisher, year, edition, pages
2010. Vol. 81, no 2, p. 105-111
Keywords [en]
BOF-slag, Selective oxidation, Vanadium
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-12688DOI: 10.1002/srin.200900123Scopus ID: 2-s2.0-77949438594OAI: oai:DiVA.org:ri-12688DiVA, id: diva2:972880
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2017-11-21Bibliographically approved

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