|
|
|
| Numerical simulation of fluid flow and alloy melting in RH process for electrical steels |
| Hai-jun Wang1,2, Rui Xu2, Hai-tao Ling1,3, Wei Zhong4, Li-zhong Chang2, Sheng-tao Qiu2,5 |
| 1 Anhui Province Key Laboratory of Metallurgical Engineering and Resources Recycling, Anhui University of Technology, Ma’anshan 243002, Anhui, China 2 School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, Anhui, China 3 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China 4 Xinyu Iron and Steel Co., Ltd., Xinyu 338001, Jiangxi, China 5 National Engineering and Research Center for Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing 100081, China |
|
|
|
|
Abstract Based on the Eulerian–Lagrangian approach, a mathematical model was established to describe the gas–liquid flow behavior in the Ruhrstahl–Heraeus (RH) degasser. The momentum source and the turbulent kinetic energy source due to the motion of gas bubbles were considered for the liquid flow. The effect of the expansion of gas bubbles on the liquid velocity, recirculation rate, and mixing time was quantitatively evaluated. After the fluid flow reached the steady state, the melting and mixing processes of aluminum alloys in the RH degasser were also investigated. The results indicate that the expansion of gas bubbles has a significant influence on the recirculation rate and the mixing time in the RH process. Increasing the superheat of liquid steel and decreasing the initial diameter of alloy particles are beneficial to promote the melting and mixing of alloy particles. Due to the existence of solidified steel shells, the maximum diameter of the alloy particle is about 1.5 times its initial diameter.
|
|
|
|
|
|
| Cite this article: |
|
Hai-jun Wang,Rui Xu,Hai-tao Ling, et al. Numerical simulation of fluid flow and alloy melting in RH process for electrical steels[J]. Journal of Iron and Steel Research International, 2022, 29(09): 1423-1433.
|
|
|
|
| [1] |
Xu-feng Qin, Chang-gui Cheng, Yang Li, Wei-li Wu, Yan Jin. Effects of argon blowing at tundish upper nozzle on multiphase flow behavior in nozzle[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(4): 588-600. |
| [2] |
Qi-peng Dong, Jiong-ming Zhang, Yan-bin Yin, Hiromi Nagaumi. Numerical simulation of macrosegregation in billet continuous casting influenced by electromagnetic stirring[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(4): 612-627. |
| [3] |
Fang-guan Tan, Sheng-li Jin, Zhu He, Ya-wei Li. Structural optimization and design of purging plug for improving its service performance[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(4): 628-635. |
| [4] |
Pin Shao, Shi-xu Liu, Xin-cheng Miao. CFD-PBM simulation of bubble coalescence and breakup in top blown-rotary agitated reactor[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(2): 223-236. |
| [5] |
Fei Li, Li-wen Zhang, Chi Zhang, Kang-jie Song, Pei-gang Mao. Numerical simulation on recrystallization behavior and microstructure evolution during hot continuous rolling process of 38CrMoAl steel rod[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(10): 1633-1645. |
| [6] |
Xun Xu, Li-jun Wu, Zhao-kuo Yuan. Thermal test and numerical simulation of cooling stave with internal ribbed tube[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(08): 1194-1204. |
|
|
|
|
2022, Vol. 29 
