Two-Way Coupling Calculation Of RH Flow Field And Decarburization Process

Traditional RH numerical simulation only considers the influence of liquid steel flow field on the RH decarburization process,which not considers the influence of CO generated by decarburization on the liquid steel flow field.This paper investigated the influence of CO generated by decarburization on the flow field of liquid steel.By two-way coupling RH flow field with decarburization,the difference of calculation results between two-way coupling and one-way coupling was analyzed.And the effect of EMS on the cycle property and decarburization behavior of RH was also studied under the two-way coupling calculation.The results show that:(1)Under the identical condition,the circulation flow rate of RH first increases and then decreases in two-way coupling,which is always higher than one-way coupling;the decarburization rate of RH in two-way coupling is higher than one-way coupling.(2)Under the two-way coupling calculation,the circulation flow rate and the decarburization rate of RH increases with the increasing flow rate of argon blowing.When the flow rate of argon blowing is 1200,1400,1600 and 1800L/min,the carbon content of liquid steel is reduced by 20%,15%and 12%respectively at the final time of decarburization.(3)Under the two-way coupling calculation,the circulation flow rate and the decarburization rate of RH increases with the increasing immersion depth.When the immersion depth is 450,550,650 and 750mm,the carbon content of liquid steel is reduced by 15%,13%and 10%respectively at the final time of decarburization.(4)Under the effect of electromagnetic stirring,the circulation flow rate and the decarburization rate of RH increases with the increasing current intensity.When current intensity is 0,600,900 and 1200A,the carbon content of liquid steel is reduced by 20%,12%and 7%respectively at the final time of decarburization.