The Optimization of Ar Bottom Blowing Nozzles Distribution for LF Refining with Mathematical Model

摘要：

　　In the current paper,the ladle argon blowing mathematical models were established by FLUENT software to optimize the placement of the argon-blowing holes including the position and angle.The results show that the position of the argon-blowing hole shifting from 424 mm to 711 mm away from the ladle center and the angle of the argon-blowing hole increasing from 90 degree to 122.4 degree is the most reasonable.In that position,the mixing time is reduced by 126 s and the two-phase fluid kinetic energy increases from 0.06 m2/s2 to 0.09 m2/s2,which is conducive to the full use of energy and good for the proliferation and removal of the inclusions.The bottom blowing hole of the ladle was modified by the optimization of Ar bottom blowing nozzles distribution for LF refining with mathematical model.After the modification of Ar bottom blowing nozzles distribution for the ladle,the heating efficiency and the refining effect are improved.Because the mixing time decreased,the smelting time is reduced by 2 minutes in the steelmaking process for Pretreatment of hot metal → LD → LF refining → RH refining → Calcium treatment → CC and 2.8 minutes in the steelmaking process for Pretreatment of hot metal → LD → LF refining → Calcium treatment → CC.For production cost control,the electrode fracture rate has greatly improved from 10 to 1 per year.

关键词： Ar blowing nozzle distribution mathematical model

作者: CHU Rensheng SHI Zhiqiang LIU Jingang LI Zhanjun

作者单位: Shougang Research Institute of Technology,Beijing 100043,China Qinhuangdao Shouqin Metal Materials Co.,Ltd.,Qinhuangdao 066326,Hebei,China

会议类型: 国际会议

会议名称: STEELSIM2017(第七届冶金过程及钢铁材料模拟及仿真国际会议)

会议地点: 青岛

会议语种:英文

页码: 200-203

在线出版日期: 2017-08-16（万方平台首次上网日期，不代表论文的发表时间）