RH精炼过程循环流量及夹杂去除的水模型研究

以某钢厂120tRH真空精炼炉为原型建立水模型,研究不同工艺参数对RH精炼过程钢液循环流量和夹杂去除率的影响。结果表明,钢液循环流量随着驱动气体流量、浸入深度、真空度、气孔数的增大而增大,随处理量的增大而减小,实验室循环流量最佳工艺参数为：气体流量2.8m3/h,浸入深度150mm,真空度3614Pa,气孔数12个;夹杂去除率随驱动气体流量、浸入深度、真空度和气孔数的变化均不是单调的,而是存在一个最佳值使夹杂去除率最高,实验室去除夹杂的合理工艺条件为：气体流量2.2m3/h,浸入深度125mm,真空度为3500Pa,气孔数8个。

Water modeling study on circulation flow rate and inclusion removal in RH refining process

A water model for a 120 t RH degasser in a certain steel plant was established to investigate the influence of different technical parameters on the molten steel circulation flow rate and inclusion removal rate in RH refining process. The results show that the molten steel circulation flow rate in- creases with the increase in driving gas flow, immersion depth, vacuum degree, and aperture number and the decrease in the amount of molten steel treated. When the driving gas is 2.8 m3/h, the immer sion depth is 150 mm, the vacuum degree is 3614 Pa, and the aperture numberis 12, the circulate flow rate in the laboratory conditions reaches the maximum. The change in inclusion removal rate with that in driving gas flow, immersion depth, vacuum degree, and aperture count is complex, and there exist optimal values for the highest inclusion removal rate, which are found in the laboratory I conditions to ]）e the driving gas flow at 2.2 m3/h, immersion depth at 125 mm, vacuum degree at 3500 Pa, and aperture number at 8.