A combined method of mathematical and physical modeling was used to investigate the circulation flow and slag-metal behavior in industrial SSRF and RH. The circulation flow of molten steel was simulated by using the coupled mathematical model. The results indicate that two different circulation modes are presented separately in SSRF and RH. The incomplete exchange of molten steel was found in SSRF because of the interaction between upflow and downflow in the snorkel, while the molten steel is fully exchanged between the vacuum chamber and ladle in RH. The flow behavior of top slag in the vacuum chamber was further investigated and compared by using cold models. It was found that many slag droplets are generated in the vacuum chamber, and then dragged into ladle by downflow for both reactors. The main difference is that the majority of droplets eventually float into ladle slag in RH, while most of the slag droplets in SSRF is cycled repeatedly, which allows slag droplets to have a longer time to contact with steel. Thus, the slag-steel reaction is more adequate in SSRF. Furthermore, the industrial desulfurization tests were designed to verify the difference in the refining effect between the two kinds of droplet behavior in actual production. The results indicate that the higher desulfurization degree was realized in SSRF with less consumption of argon than that of RH.

中文翻译：

---

工业单通气管精炼炉 (SSRF) 中循环流和渣金属行为的研究：在脱硫中的应用

使用数学和物理建模相结合的方法研究了工业 SSRF 和 RH 中的循环流动和熔渣金属行为。采用耦合数学模型对钢水循环流动进行了模拟。结果表明，在 SSRF 和 RH 中分别呈现了两种不同的循环模式。在 SSRF 中发现钢水的不完全交换是由于通气管中的上流和下流之间的相互作用，而钢水在 RH 中的真空室和钢包之间完全交换。通过使用冷模型进一步研究和比较了真空室顶渣的流动行为。发现在真空室中产生了许多渣滴，然后通过下降流将两个反应器拖入钢包中。主要区别在于大部分熔滴最终会在RH中漂浮到钢包渣中，而SSRF中的大部分熔渣熔滴是反复循环的，这使得熔渣熔滴与钢接触的时间更长。因此，渣钢反应在 SSRF 中更为充分。此外，还设计了工业脱硫试验，以验证实际生产中两种液滴行为在精炼效果上的差异。结果表明，与RH相比，SSRF在氩气消耗量较少的情况下实现了更高的脱硫度。设计了工业脱硫试验，验证了实际生产中两种液滴行为在精炼效果上的差异。结果表明，与RH相比，SSRF在氩气消耗量较少的情况下实现了更高的脱硫度。设计了工业脱硫试验，验证了实际生产中两种液滴行为在精炼效果上的差异。结果表明，与RH相比，SSRF在氩气消耗量较少的情况下实现了更高的脱硫度。