Thermo-Chemical Modelling of the Production of Ferro-chromium in Submerged-Arc Furnace

Abstract

Several studies have been reported in literature on the thermochemistry of production of ferro-chromium. Experimental studies have been carried out to understand the kinetics of reduction of oxides and to study the equilibrium between slag and metal in the furnace. How-ever, a quantitative model of the thermochemistry of the process in any region of the furnace is yet to be repor-ted. Pre-reduction of the ore has been recommended and also employed as a means of reducing the power consumption in the furnace is yet to explored. This communication reports a thermochemical model for the production of ferro-chromium in submerged-arc furnace and a model to map the temperature profile in the furnace. The neffect of pre-reduction on the temperature profile has also been asse-ssed.