Fluid Flow Behavior In RH Refining Reactor With Traveling Magnetic Field

RH vacuum refining reactor has become an important equipment in the production of high quality steel and special steel due to its excellent refining effect,large amount of molten steel and short refining cycle.The industrial electromagnetic stirring ladle has the following characteristics.It can change the flow field of the molten steel in the ladle,can enhance the transfer of solute and heat in the ladle,and can promote the chemical reaction.However,there are few papers about the research.This mathematical model uses the open source fluid calculation software OpenFOAM to discuss the flow field distribution,cycle characteristics and gas content distribution state of RH through further development of the solver.And an electromagnetic stirring device was installed near the wall surface of the ladle near the rising pipe of the RH vacuum refining device,and the electromagnetic stirring ladle and RH equipment were combined to discuss the electromagnetic force and magnetic induction distribution of the traveling wave magnetic field in the RH device,and further discussed The flow field distribution,cycle characteristics and gas-bearing rate distribution characteristics of RH under traveling wave magnetic field,then reached the following conclusions:(1)The circulating flow rate of RH increases with the increase of argon flow rate.When the flow rate of argon blowing is 1200,1400,1600,1800L/min,the RH circulating flow rates are 62.6,65.1,68.3,70.4t/min respectively;(2)The gas content in the RH riser pipe increases with the increase of the argon flow rate,and the argon distribution tends to close toward the center of the riser pipe,but it is difficult to form a phenomenon of "blowing through";(3)The electromagnetic force generated by the traveling wave magnetic field causes eddy currents on the top of the ladle near the side of the electromagnetic stirrer,enhancing the circulation motion of the molten steel in the RH 1adle;(4)The circulating flow rate of RH increases with the increase of current intensity.When the current intensity is 800,1000,1350,1500A,the circulating flow rate of RH increases by 14%,22%,31%and 37%respectively;(5)The circulating flow rate of RH increases with the increase of current frequency.When the current frequency is 0.5,2,5,and 8Hz,the circulating flow rate of RH increases by 9.5%,19.6%,28%,and 34.2%respectively.