A kinetic model applied to by injection of lime-based the molten powders.

Abstract

Akinetic model of hot-metal desulfurization by deep injection of synthetic powdermixtures is presented. The approach takes into consideration the transient contribution due to the particles dispersed in the bulk metal and those located at the bubble-metal interface, the influence of the carry-over slag as well as the volumeand composition of the top slag. Themodel has been utilized to assess the influence of the treatment temperature, rate of injection of powdermixtures, gas flow rate and initial concentration of sulphur over the desulfurization kinetics. In the second part of this study an analysis of the industrial data for injection of powdermixtures using this model is described.