Pragmatic analysis of the electric submerged arc furnace continuum

A transient mathematical model was developed for the description of fluid flow, heat transfer and electromagnetic phenomena involved in the production of ferronickel in electric arc furnaces. The key operating variables considered were the thermal and electrical conductivity of the slag and the shap...

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Bibliographic Details
Published in:Royal Society open science 2017-09, Vol.4 (9), p.170313-170313
Main Authors: Karalis, K., Karkalos, N., Antipas, G. S. E., Xenidis, A.
Format: Article
Language:English
Subjects:
Bubbles
Computer Science
Electric Arc Furnace
Ferronickel
Magnetohydrodynamics
Properties
Slag
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Summary:A transient mathematical model was developed for the description of fluid flow, heat transfer and electromagnetic phenomena involved in the production of ferronickel in electric arc furnaces. The key operating variables considered were the thermal and electrical conductivity of the slag and the shape, immersion depth and applied electric potential of the electrodes. It was established that the principal stimuli of the velocities in the slag bath were the electric potential and immersion depth of the electrodes and the thermal and electrical conductivities of the slag. Additionally, it was determined that, under the set of operating conditions examined, the maximum slag temperature ranged between 1756 and 1825 K, which is in accordance with industrial measurements. Moreover, it was affirmed that contributions to slag stirring due to Lorentz forces and momentum forces due to the release of carbon monoxide bubbles from the electrode surface were negligible.
ISSN:2054-5703
2054-5703
DOI:10.1098/rsos.170313