直流锰硅合金矿热炉电极特性多物理场耦合分析  

MULTI-PHYSICAL FIELD COUPLING ANALYSIS OF ELECTRODE CHARACTERISTICS OF DC FERROMANGANESE-SILICON SUBMERGED ARC FURNACE

作　　者：郑志勇 张秀珩[1] 张赓 ZHENG Zhiyong;ZHANG Xiuheng;ZHANG Geng(School of Mechanical Engineering,ShenyangLigong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学机械工程学院,辽宁沈阳110159

出　　处：《铁合金》2023年第6期27-32,36,共7页Ferro-alloys

基　　金：国家自然科学基金资助项目(项目编号:51934002)。

摘　　要：为了给电极控制系统提供可靠的数据,进一步探究自焙电极特性对电极温度分布、烧结带位置变化和熔池温度分布的影响。建立自焙电极与炉内熔池耦合的多物理场三维模型,研究直流单电极锰硅合金矿热炉整体的电流密度分布、电势分布和温度分布,并探究了不同外加电压、筋片数量、电极糊电导率三个特性时,X=0截面A(0,0,-1.8)到B(0,0,7.2)段温度分布,并判断烧结带位置。研究表明:电压由150 V增大到250 V,电极烧结提前,熔池内最高温度上升112.6%;当电极糊导电率增加,电极烧结延缓,电极电压降减小,熔池温度升高;当筋片数量增加,电极烧结延缓,熔池温度略有升高。该方法可用于控制电极参数提高熔炼效率,防止电极焙烧不良发生电极事故。In order to provide reliable data for the electrode control system,further explore the effects of the characteristics of the soderberg electrode on the electrode temperature distribution,the position change of the sintering zone and the temperature distribution of the molten pool,a multi-physics 3D model of the coupling between the soderberg electrode and the melting pool in the furnace was established to study the current density distribution,potential distribution and temperature distribution of the whole single electrode DC ferromanganese-silicon submerged arc furnace.The tem-perature distribution in section A(0,0,-1.8)to B(0,0,7.2)of X=0 section was investigated under different applied voltage,web number and electrode paste conductivity,and the location of sintering zone was determined.The results show that when the voltage increases from 150 V to 250 V,the electrode sintering advances and the maximum temperature in the molten pool increases by 112.6%;when the electrode paste conductivity increases,the electrode sintering is delayed,the electrode voltage drop decreases,and the molten pool temperature increases;when the number of webs in-creases,the sintering of electrodes is delayed,and the temperature of molten pool increases slightly.The method can be used to control electrode parameters to improve melting efficiency and prevent electrode accidents caused by poor electrode roasting.

关 键 词：直流矿热炉 锰硅合金 自焙电极 多物理场耦合 

分 类 号：TF632[冶金工程—钢铁冶金] TF642