新型侧底复吹真空精炼装置循环特性研究  

Study on the Circulation Characteristics of a New Side-Bottom Blowing Vacuum Refining Device

作　　者：韩杰[1] 王晓冬[2] 巴德纯[2] 

机构地区：[1]辽宁石油化工大学矿业工程学院,抚顺113001 [2]东北大学机械工程与自动化学院,沈阳110819

出　　处：《真空科学与技术学报》2017年第5期533-537,共5页Chinese Journal of Vacuum Science and Technology

基　　金：辽宁省教育厅一般项目(L2015301)

摘　　要：对某钢厂180 t RH真空精炼装置浸渍管结构改造并增加底吹氩气功能,通过数值方法对新型侧底复吹真空精炼装置内气液两相循环流动进行了模拟,并与实验数据进行了比较。结果表明:数值模拟所得到循环流量值与物理模拟所得到的实验数据有较好的一致性;侧吹0.8 m^3/h、底吹0.6 m^3/h时,循环流量达到最大数值0.227 m^3/h,新型结构用较小的吹氩流量即可达到传统RH的循环精炼效率,具有重要的应用前景。The gas liquid flow-field, in the 180t Ruhrstahl Hearaeus （RH） furnace modified by introduction of bottom blowing of argon, was empirically approximated, mathematically modeled, numerically simulated and experimentally evaluated. The impact of both the side-and bottom-blowing flow-rates on the mixing time of liquid steel and argon,their average circulation rates, their 3-D velocity profiles, and RH refining efficiency was investigated. The simulated results show that the modified RH furnace outperformed the conventional one. For example, the new RH furnace decreased the mixing-time by 41.29% to 39 s and increased the maximum circulation rate to 0. 227 m3/h at a side-blowing flow-rate of 0. 8 m3/h and a bottom-blowing flow-rate of 0. 6 m3/h, indicating that the conventional RH refining efficiency could be reached at a much lower argon flow rate for a shorter time. The simulated and measured results were found to be in fairly good agreement.

关 键 词：真空精炼 侧底复吹 循环流量 混匀时间 数值模拟 

分 类 号：TF769.4[冶金工程—钢铁冶金]