论文部分内容阅读
对超音速氧气射流作用下85t转炉熔池中的渣液和钢液进行了多相流数值模拟研究,分析了熔池内钢液的速度场.结果表明,随喷吹枪位升高,射流冲击形成的渣坑和钢液凹坑的直径变大,而渣坑与钢液凹坑的深度变小.当枪位从1.2m提高到1.8m时,射流冲击形成的钢液凹坑的直径从1.359m提高到1.566m,凹坑深度从0.187m降低到0.157m.同时钢液面下0.2m处钢液的最大速度从0.48m/s降低到0.27m/s;而在熔池液面下0.8m处,最大速度由0.06m/s增加到0.09m/s.高枪位下熔池钢液速度分布更均匀.
The multi-phase flow numerical simulation of the liquid and molten steel in the 85t converter molten pool under the action of supersonic oxygen jet was carried out and the velocity field of liquid steel in the molten pool was analyzed. The results show that with the increase of the gun position, The size of the pit and the liquid steel pit become larger, while the depth of the pit and liquid steel pit become smaller.When the gun position is increased from 1.2m to 1.8m, the diameter of the liquid steel pit formed by jet impact increases from 1.359m increased to 1.566m, the pit depth decreased from 0.187m to 0.157m. At the same time, the maximum velocity of molten steel at 0.2m below the molten steel decreased from 0.48m / s to 0.27m / s; At 0.8m, the maximum velocity increased from 0.06m / s to 0.09m / s.