Please choose your delivery country and your customer group
The carbon-oxygen reaction has been simulated during the injection of oxygen into molten liquid steel in the Electric Arc Furnace using a mathematical model to describe both oxygen injection and decarburization kinetics in 3D. The computational CFD code Phoenics has been employed to solve numerically the system of conservation equations (continuity, turbulent Navier-Stokes, k-epsilon turbulent model, mass conservation of carbon and oxygen equations). The effect of gas flow rate, injection angle and number of lances on the decarburization rate has been investigated. The reaction rate increases with gas flow rate, however the injection angle shows an optimum value to improve the reaction kinetics. Decreasing the inclination angle from the horizontal, the decarburization rate increases. This is due to higher velocity fields and stronger stirring conditions in the bulk of liquid steel. However, a low inclination angle also promotes severe front splashing.