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| Numerical Simulation on Flow Pattern Evolution Characteristics of Two-side Blowing Gas-Slag-Matte Multiphase Flow |
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Received:April 11, 2023
Revised:April 13, 2023
Accepted:April 18, 2023
Published Online:May 19, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.06.005 |
| KeyWord:bilateral blowing immersion oxygen lance; multiphase flow; numerical simulation; intensive mixing |
| Author | Institution |
| SU Xin-tao |
昆明理工大学复杂有色金属资源清洁利用国家重点实验室 |
| WANG Shi-bo |
昆明理工大学复杂有色金属资源清洁利用国家重点实验室 |
| WANG Zi-cheng |
昆明理工大学复杂有色金属资源清洁利用国家重点实验室 |
| WU Xu-dong |
昆明理工大学复杂有色金属资源清洁利用国家重点实验室 |
| LI Wen-jie |
昆明理工大学复杂有色金属资源清洁利用国家重点实验室 |
| BI Qiao-ling |
昆明理工大学复杂有色金属资源清洁利用国家重点实验室 |
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| Abstract: |
| The evolution of double-side-blown multiphase flow patterns was numerically simulated by using VOF coupled Realizable k–ε turbulence model. The flow pattern evolution process of two-phase blowing multiphase flow was analyzed, and the gas-slag-matte three-phase mixture finally reached "dynamic equilibrium". It is determined that the average turbulent kinetic energy and the variance of average gas holdup are consistent in characterizing the melt mixing uniformity. At the same time, taking the average turbulent kinetic energy and the variance of gas holdup as indicators, the influence of diameter and inclination of side-blown oxygen lance on the evolution of melt flow pattern was studied. The results show that under a certain amount of gas, the diameter of the oxygen lance determines the gas flow rate, and when the diameter is 30 mm, the stirring effect inside the molten pool is better. When the oxygen lance is tilted downward 10° and 15°, the mean gas holdup variance and mean turbulent kinetic energy are reduced by 24% and increased by 8% respectively compared with 0°. |
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