采用物理模拟方法对单管 RH 真空精炼过程流场的循环流动、混合特性等进行了研究，建立与 RH 真空精炼装置原型相似比为1∶5的水模型，研究了不同工艺参数对单管 RH 装置内钢液循环流动的影响。对比实验测量数据发现，增大吹氩量和浸渍管插入深度以及浸渍管有效横截面有利于提高循环流量，减小均混时间；在相同的实验条件下，椭圆形浸渍管 RH 比传统浸渍管 RH 的循环流量要大15％以上，单管 RH 的均混时间比传统RH 可以缩短20％；单管 RH 钢包底部吹氩位置位于距钢包中心0.4R(R 是钢包半径)处时，均混时间最短。
A physical simulation method was applied to investigate the fluid flow and mixed characteristic in single snorkel RH vacuum refining degasser.A water model was established on the scale of 1∶5 compared to the proto-type.The effect of various processing parameters on the flow field in single snorkel RH vacuum refining degasser was investigated and compared with experimental data.The results show that with increasing the lifting gas flow rate,the snorkel insertion depth and the effective cross section of the snorkel,the circulation flow rate increases and the mixing time decreases.Under the same experimental condition,the circulation flow rate in RH with oval snorkels is 15% greater than that in traditional RH.The mixing time in single snorkel RH is 20% less than that in traditional RH.For single snorkel RH,if the bottom blowing position is at 0.4R (R is the radius of the snorkel), the mixing time reaches its minimum value.
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