Abstract
This article is devoted to the numerical modeling of electrovortex and convection flows in the direct current (DC) electric arc furnace with a different position of the bottom electrode. The electromagnetic, temperature, and hydrodynamic distribution parameters are given. The shear stress on the fettle area is offered as a criterion for the estimation of vortex flow influence on the increased wearing of the fettle. It is shown that lifting the bottom electrode above the fettle surface at the electrode radius leads to the decrease of shear stress on the fettle area by 30 pct. Putting the bottom electrode lower than the fettle surface by the distance equal to the electrode radius and its expanding by the same distance reduces the stress by 10 pct.
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