CFD modeling of carbon combustion and electrode radiation in an electric arc furnace

This paper, concentrates on a three-dimensional (3D) computational fluid-dynamics (CFD) model for coal combustion and electrode radiation inside an electric-arc furnace (EAF). Simulation of the melting process includes combustion reactions of coal particles and radiation from electrodes. Particle surface and gas phase reactions were used to predict injected coal particle combustion. The predicted temperature distributions are realistic because of the inclusion of combustion reactions and radiation models together. The CFD model provided detail information for the coal particles combustion and radiation interactions phoneme inside the electric-arc furnace. The cooling process of the EAF walls were considered in the CFD model hence heat losses from the walls have been found higher than the earlier studies. Results showed that CFD simulation can efficiently be used to develop and investigate EAF in design phase. •3D-CFD of carbon combustion and electrode radiation were performed for an EAF.•Particles surface and gas phase reactions used to predict coal particle combustion.•Realistic temperature distribution obtained for slag surface.•Temperature, CO and CO2 distribution of carbon combustion visually obtained.