Mc Dougall, I2007-07-042007-07-042007Mc Dougall, I. 2007. Finite element modelling of electric currents in AC submerged arc furnaces. Proceedings of INFACON XI, Macmillan India, Delhi, 2007, Vol. 2, pp 630-63710: 0230-63070http://hdl.handle.net/10204/962Finite element models were generated of two submerged arc furnaces of different geometries. A 48MW circular furnace and a 68MW 6-in-line rectangular furnace were studied. The electrodes, raw material, slag and molten metal were included in the model. ANSYS/Multiphysics was used to predict the current density distribution in the electrodes, raw material, slag and molten metal as a result of the three phases AC current. The effect of the electrode immersion on the current path was studied. The “proximity effect” caused a pronounced asymmetry in the electrode currents in the circular furnace, whilst the electrode currents in the rectangular furnace exhibited radial symmetry. The current distribution in the melt in both furnaces indicated that the bulk of the current flows between phases. The current density is greatest between electrodes. Results were compared to qualitatively similar published work, operating experience and results of furnace dig-outs.enAc currentArc furnacesElectric currentMolten metalConference PresentationMc Dougall, I. (2007). Finite element modelling of electric currents in AC submerged arc furnaces. http://hdl.handle.net/10204/962Mc Dougall, I. "Finite element modelling of electric currents in AC submerged arc furnaces." (2007): http://hdl.handle.net/10204/962Mc Dougall I, Finite element modelling of electric currents in AC submerged arc furnaces; 2007. http://hdl.handle.net/10204/962 .TY - Conference Presentation AU - Mc Dougall, I AB - Finite element models were generated of two submerged arc furnaces of different geometries. A 48MW circular furnace and a 68MW 6-in-line rectangular furnace were studied. The electrodes, raw material, slag and molten metal were included in the model. ANSYS/Multiphysics was used to predict the current density distribution in the electrodes, raw material, slag and molten metal as a result of the three phases AC current. The effect of the electrode immersion on the current path was studied. The “proximity effect” caused a pronounced asymmetry in the electrode currents in the circular furnace, whilst the electrode currents in the rectangular furnace exhibited radial symmetry. The current distribution in the melt in both furnaces indicated that the bulk of the current flows between phases. The current density is greatest between electrodes. Results were compared to qualitatively similar published work, operating experience and results of furnace dig-outs. DA - 2007 DB - ResearchSpace DP - CSIR KW - Ac current KW - Arc furnaces KW - Electric current KW - Molten metal LK - https://researchspace.csir.co.za PY - 2007 SM - 10: 0230-63070 T1 - Finite element modelling of electric currents in AC submerged arc furnaces TI - Finite element modelling of electric currents in AC submerged arc furnaces UR - http://hdl.handle.net/10204/962 ER -