Simulation of arc characteristics in a titanium slag EAF with hollow electrode
The arc characteristics inside the titanium slag electric arc furnace(EAF)play a crucial role in the melting and reduction of furnace materials.In this study,a method combining fluid mechanics and electromagnetic field was employed to establish a mathematical model for the arc region inside the EAF.Multiple physical fields(flow field,temperature field,and electromagnetic field)within the arc re-gion were simulated to investigate the influence of the hollow electrode.The results show that com-pared to the solid electrode,the temperature and flow field of the hollow electrode still exhibit a"bell-shaped"distribution.However,due to the Lorentz force and pressure,significantly larger negative velo-cities appear near the hollow region,hindering the feeding process at the hollow electrode.Furthermore,research shows that the inner diameter of the hollow electrode affects the current density distribution in the arc region,and then determines the distribution characteristics of the Lorentz force and pressure,which reveals the influence mechanism of the hollow electrode on the arc characteristics.
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