Promotion of Desulphurization in Ladle through Slag Emulsification by Stirring with Stationary AC Electromagnetic Field

摘要

Strong electromagnetic stirring enables promotion of interfacial reaction between slag and metal in ladle refining processes. This study elucidates the interfacial phenomena through plant scale experiments by using stationary alternative current (AC) electromagnetic field, cold models to make clear the hydrodynamic behavior of fluids, and the numerical simulation of the magnetohydrodynamic (MHD) and chemical reaction analyses. They revealed that the enhancement of the interfacial reaction is strongly related to the state of the slag-metal interface and that there exist critical values of the intensity of electromagnetic power supply, which govern the reaction rate.