Laboratory Assessment of the Technogenic Raw Materials Briquettes Effect on the Arc Furnace Electric Mode

Abstract

The influence of partially reduced scale briquettes on the arc electrical characteristics in a laboratory single-phase arc furnace is considered. Briquettes were obtained from industrial scale by mixing it with coke production waste and flux-forming additives. Fluxes were selected with aim that their interaction provided the slag homogeneity. During the experiment, the conditions for entering a briquette into an electric arc furnace (EAF) were simulated. That includes imitation of simultaneous melting of briquettes and scrap and the formation of a slag cover (metal was melted, briquette was added, slag was introduced), and imitation adding briquettes to a liquid bath of metal with slag (metal was melted, slag was introduced, briquette was added). A slightly positive effect of the briquettes input on the arc burning conditions was noted, as well as a noticeable effect of slag foaming. It is assumed that a significant content of iron oxides in the briquette will also contribute to the lime accelerated assimilation in the slag, which may somewhat speed up the process of metal refining from phosphorus.