Reaction Mechanism in EAF Steelmaking Process Based on Selective Oxidation, Bath Stirring and Furnace Body Heat Transfer

EAF steelmaking is characterized by complex charge structure, vigorous chemical reaction, and intensive energy source. The existed disadvantages lead to the big difference of temperature and chemical composition in molten bath, and finally make it difficult for end point controlling. There is still a lack of research on reaction regularity and smelting mechanism in the EAF steelmaking process. In this paper, the EAF was divided into “furnace body area” and “molten bath area”. The characteristics of bath fluid flow, elements selective oxidation, heat transfer behavior in EAF steelmaking process based on bath stirring and multiple input energy were explored and determined through thermodynamic calculation and thermal experiments. The results revealed the reaction mechanism in the EAF steelmaking process based on selective oxidation, bath stirring, and furnace body heat transfer. This research is expected to provide theoretical basis for energy saving and optimization, emission reduction, and green development of the EAF steelmaking process.