Kinetics of steel scrap melting in molten Fe-C bath

Abstract

The melting phenomena of steel scrap in molten steel bath has been investigated by several workers. Their works are reviewed in the present paper. The phenomena are, in general, so complicated that both heat and mass transfer take place simultaneously. Many workers made small scale experiments in such condition that only mass transfer was taken into consideration. The results were summarized in the form of dimensionless correlation among Sh, Gr, Re, Sc and JD. Only one paper reported the experiment in which pure heat transfer was taken into consideration. The overall heat transfer coefficient was estimated by fitting numerical solution of heat transfer equations to the results of immersion experiments. The simultaneous heat and mass transfer were analyzed by mathematical model in relation to BOF converter operation. Some workers made experiments and numerical solution of mathematical model to obtain the heat and mass transfer coefficients in pilot plant converter and commercial converter.