Effect of Precipitated Bubbles on the Behavior of Gas–Liquid Two-Phase Flow in Ruhrstahl Heraeus Refining

作者：Yihong Li, Zongyi Chen, Yan Tian, Dong Wang, Yibo He, Chengjian Hua, Zhifeng Ren, Pengju Zhang · 发表于：Processes · 年份：2025 · DOI：10.3390/pr13051484 · 被引用次数：4 · 研究领域：Metallurgical Processes and Thermodynamics、Minerals Flotation and Separation Techniques、Fluid Dynamics and Mixing

In this study, through RH water model simulation experiments, the effects of precipitation bubbles on the two-phase flow pattern, liquid steel flow behavior, and flow characteristics in an RH reactor during the whole decarburization process were comparatively investigated and analyzed by using quasi-counts that reflected the similarity of the precipitation bubble phenomenon. The experimental results show that an increase in precipitation bubbles is positively related to an increase in circulating flow rate, a reduction in mixing time, and an increase in gas content and negatively related to the residence time of liquid steel in the vacuum chamber. The two-phase flow pattern of the rising tube under the influence of precipitation bubbles includes bubble flow, slug flow, mixing flow, and churn flow. Under the influence of precipitation bubbles, the liquid surface spattering inside the vacuum chamber is reduced, the fluctuation amplitude is reduced, the efficiency of liquid steel processing is improved, it is not easy for cold steel to form, and the fluctuation frequency is increased, which is conducive to increasing the surface area of the vacuum chamber; the bubbles’ rising, aggregating, and crushing behavior increases the stirring effect inside the vacuum chamber, which is conducive to improving the decarburization and mass transfer rate. Under the influence of the precipitated bubbles, the concentration gradient between the ladle and the vacuum chamber is increased, which ac...