The RH vacuum refining technology is a vitally powerful method of producing clean steel. The inner diameter of traditional circular snorkel is very difficult to be increased owing to the metallurgical refractory thickness around the snorkels and the limitation of the area under the vacuum chamber, limiting the increase in refining efficiency. In order to improve the refining efficiency of the RH reactor, a new designed RH degasser with an optimized arched snorkel is established. This design replaces the traditional two circular snorkels structure with the two arched snorkels and greatly enhances the cross-sectional area of snorkel. In this study, the flow characteristics of this new type RH were studied and analyzed by establishing a 1 : 5.5 physical model of RH with arched snorkels. Results show that the circulation flow rate of RH with arched snorkels can increase by 100% ∼ 180% and the mixing time approximately decreases by 35% compared with RH with circular snorkels under actual production conditions. The circulation flow rate of RH with arched snorkels continues to increase obviously when gas flow rate exceeds the saturated value of RH with circular snorkels. The RH with arched snorkels can increase the refining efficiency significantly and has important application prospect.

中文翻译：

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带拱形通气管的RH真空室钢水流动特性的物理模拟

RH真空精炼技术是生产洁净钢至关重要的方法。传统的圆形通气管的内径由于通气管周围的冶金耐火材料厚度以及真空室下方区域的限制而很难增加，从而限制了精炼效率的提高。为了提高RH反应器的精炼效率，建立了具有优化的拱形通气管的新型设计的RH脱气机。这种设计用两个拱形通气管代替了传统的两个圆形通气管结构，并大大增加了通气管的横截面积。在这项研究中，通过建立带有拱形通气管的RH的1：5.5物理模型，研究和分析了这种新型RH的流动特性。结果表明，与实际生产条件下的带圆形通气管的RH相比，带拱形通气管的RH循环流量可以增加100％〜180％，混合时间大约减少35％。当气体流量超过带圆形通气管的RH的饱和值时，带拱形通气管的RH的循环流量继续明显增加。带拱形浮潜的RH可以显着提高精炼效率，具有重要的应用前景。