Investigation of the current carrying melt in the DC-EAF bath under the action of external vertical magnetic field

I. M. Yachikov¹ - I. V. Portnova¹ - A. S. Karandaev²

¹ Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia
² National Research South Ural State University, Chelyabinsk, Russia

Abstract
The paper focuses on a key possibility of studying the character of the current-carrying melt being exposed to external magnetic fields, with the use of a non-metallic conducting transparent liquid. The paper discusses physical modelling of the influence of the external vertical magnetic field on the DC-EAF bath, considering different ways of connecting hearth electrodes as well as different currents passing through the bath. A ``cold'' model is used to describe the character of MHD flow of the current-carrying melt in the DC-EAF bath under the action of an external vertical magnetic field when connected to the central or off-axis bath hearth electrodes. The obtained results allow to conclude that the average velocity of the liquid circulation in the horizontal plane increases if the axis of the hearth electrode shifts from the bath axis. The possibility of applying the results of the experimental study to the industrial DC-EAF is emphasized, as well as the practical value of the force of the vertical magnetic field is specified for conductive agitation of a low capacity DC-EAF bath. Tables 1, Figs 3, Refs 15.