RH真空精炼过程循环流量与混合特性的物理模拟  

Physical Simulation on Circulating Flow Rate and Mixing Characteristics in RH Vacuum Refining Process

作　　者：韩杰[1] 王晓冬[1] 巴德纯[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第7期975-979,共5页Journal of Northeastern University(Natural Science)

基　　金：辽宁省自然科学基金资助项目(20102073)

摘　　要：以某钢厂180 t的RH真空精炼装置为研究原型,依据相似准则建立物理模拟试验装置,进行2因素(喷吹角度和供气流量)作用下3水平的水模型正交试验研究,深入揭示RH真空精炼过程中循环流动状态变化规律,并为其工艺和操作参数的确定提供技术依据.结果表明:供气流量及喷吹角度均会影响精炼效率,供气流量影响更显著;存在最优的吹氩方案,即流量为2.0 m3/h,喷吹角度为45°时,混匀时间最短;在不同供气流量下,循环流量增加幅度随喷吹角度的增大而逐渐减小,最佳喷吹角度在25°～35°之间.Based on a prototype of 180 t RH vacuum refining equipment in a steel plant,the physical simulation experiment device was established according to the similarity criterion.The three-level orthogonal experiments with the influence of two factors such as the gas blowing angle and gas flow rate were studied in the water model experiments,which revealed thorough understanding of the circulating flow conditions in RH vacuum refining process,and provided technical references for the decision of process and operating parameters.The results showed that both the gas flow rate and the gas blowing angle influenced the refining efficiency,of which the gas flow rate had more significant influence.The optimization argon-blow scheme was that the minimum mixing time was obtained with the nozzle angle of 45°when the gas flow rate was 2.0 m3/h.While for the different gas flow rates,the increased amplitude of the circulation flow rate decreased with the increase of the gas blowing angle,and the optimal gas blowing angle was between 25 ° and 35 °.

关 键 词：RH真空精炼 循环流量 混合特性 混匀时间 物理模拟 

分 类 号：TF769.4[冶金工程—钢铁冶金]