直流电炉冶炼铌铁过程数值模拟分析与研究  

NUMERICAL SIMULATION ANALYSIS AND RESEARCH ON SMELTING PROCESS OF FERRONIOBIUM IN DC ELECTRIC FURNACE

作　　者：王继平[1] 贾中帅 WANG Jiping;JIA Zhongshuai(Mining Research Institute of Baotou Steel Group,Baotou 014030,China)

机构地区：[1]包钢集团矿山研究院,内蒙古包头014030

出　　处：《铁合金》2021年第4期17-22,共6页Ferro-alloys

基　　金：多金属共生矿生态化冶金教育部重点实验室开放课题(NEMM2019002)。

摘　　要：介绍了通过建立直流电炉冶炼铌铁过程的有限元模型,对其电磁场、温度场进行数值模拟。结果表明:电压梯度主要集中在电极附近,从阳极与熔体的接触面开始,沿径向和轴向呈逐渐减小趋势;磁通密度最大值为2.035 5 T,位于上下端壁面处,阴极插入越深,壁面电压减小;电磁力主要集中在壁面处,电磁搅拌的方向在水平方向上是向外的,而在竖直方向熔体底部为从上到下,在熔体顶部为从下到上,熔体内的高温区主要集中在电极的外端面和熔体接触区域,而远离电极区域的温度则逐渐降低。The paper establishes a finite element model of smelting ferroniobium with a direct current electric furnace,and numerically simulates its electromagnetic field and temperature field.The results show that the voltage gradient is mainly concentrated near the electrode,and decreases gradually along the radial and axial direction from the contact surface between the anode and the melt.The maximum magnetic flux density is 2.0355 T,which is located at the upper and lower end walls.The deeper the cathode inserts,the lower the wall voltage is.The electromagnetic force is mainly concentrated on the wall,the direction of electromagnetic stirring is outward in the horizontal direction,while in the vertical direction it is from top to bottom at the bottom of the melt,and from bottom to top at the top of the melt.The high temperature zone is mainly concentrated in the outer end surface of the electrode and the melt contact area,while the temperature away from the electrode area gradually decreases.

关 键 词：直流电炉 冶炼铌铁 电磁场 温度场 数值模拟 

分 类 号：TF649.1[冶金工程—钢铁冶金]