Abstract：A mathematical model about the gas-liquid multiphase flow on the condition of the alternating electromagnetic field was developed to investigate the effect of different exciting current parameters on the recirculation flow rate in RH degasser. The numerical results indicate that the vertical electromagnetic force has the same the direction as the traveling magnetic field, while the level electromagnetic force is centrosymmetric. On the condition of 200A of exciting current density and 10Hz of current frequency, the recirculation flow rate is up more than 10 percent by imposing the traveling magnetic field on the up snorkel, while the recirculation flow rate is up about 20 percent by imposing the traveling magnetic field on the up snorkel and the down snorkel. The recirculation flow rate in the case of the traveling magnetic field near the up snorkel is greater than that in the case of the traveling magnetic field near the down snorkel when the gas flow rate is less than 1750NL/min. But such a difference disappears when the gas flow rate is greater than 1750NL/min. If the exciting current frequency is 10Hz and the magnetic field is imposed on the up snorkel, the recirculation flow rate increases from 83t/min to 129t/min linearly when the current density increases from 100A to 600A. If the exciting current density is 200A and the magnetic field is imposed on the up snorkel, the recirculation flow rate increases firstly and then decreases when the current frequency increases from 10Hz to 60Hz and there is a maximum value of 91.4t/min when the current frequency is 30Hz.
耿佃桥 雷洪 赫冀成. 影响RH循环流量的行波磁场工艺参数分析[J]. 钢铁, 2009, 1(6): 0-0.
GENG Dian-Qiao Ji-Cheng HE. Analysis for the Effects of Technological Parameters of Traveling Magnetic Field on Circulation Flow Rate in RH Degasser. Iron and Steel, 2009, 1(6): 0-0.
2009, Vol. 1 