150t LF炉单孔底吹氩搅拌特性研究

针对包钢150tLF炉精炼过程中单孔吹氩搅拌钢液问题,按1:4比例搭建水模型试验平台,选取吹气量、加料位置和吹气孔布置作为试验因素,以混匀时间作为评价指标,根据现场条件确定各因素下的水平数进行全面试验研究;运用计算流体力学原理,以Fortran语言作为编程工具,采用全浮力模型对多个工况下钢液的流动进行模拟研究。研究表明:单孔吹气条件下,吹气量、加料位置和吹气孔布置对钢液的混匀过程均有一定影响;吹气孔距离钢包轴心越远,越有利于钢液的成分和温度均匀;加料位置应在钢液表面流动的活跃区加入。

Mixing Characteristics of Bottom Blowing Argon with Single Hole in 150t Ladle Furnace

Aimed at the refining process of Bottom Blowing Argon with Single Hole about 150 t ladle furnace in baotou steel . The experimental model was set up according to the proportion of 1:4 from the Sprototype. Argon blowing amount, loading position and arrangement of blow argon hole were considered as the experimental factors, and mixing time were determined as evaluation index. The comprehensive tests were done. Based on the computational fluid dynamics principle, the flow of molten steel was simulated for different conditions by using the buoyancy models. Under the condition of bottom blowing argon with single hole, it is showed that The blending process were effected on argon blowing amount,loading position and arrangement of blow argon hole, the distance of blowing hole was farther axis of the ladle, it is favorable to uniformity of composition and temperature of molten steel. Loading position was set up the area of the larger kinetic energy.