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›› 2011, Vol. 11 ›› Issue (1): 20-25.

• 流动与传递 • 上一篇    下一篇

氧气顶吹转炉的三相流数值模拟

董凯 朱荣 何春来 魏鑫燕 刘福海   

  1. 北京科技大学冶金与生态工程学院 北京科技大学冶金与生态工程学院 北京科技大学冶金与生态工程学院 北京科技大学冶金与生态工程学院 北京科技大学冶金与生态工程学院
  • 收稿日期:2010-10-20 修回日期:2011-01-14 出版日期:2011-02-20 发布日期:2011-02-20
  • 通讯作者: 董凯

Numerical Simulation of Three-phase Flow in an Oxygen Top-blown Convertor

DONG Kai ZHU Rong， HE Chun-lai, WEI Xin-yan LIU Fu-hai   

  1. School of metallurgical and Ecological engineering, university of science and technology beijing, Metallurgical and Ecological Engineering School, University of Science and Technology Beijing 1) Metallurgical and Ecological Engineering School, University of Science and Technology Beijing 1) Metallurgical and Ecological Engineering School, University of Science and Technology Beijing 1) Metallurgical and Ecological Engineering School, University of Science and Technology Beijing
  • Received:2010-10-20 Revised:2011-01-14 Online:2011-02-20 Published:2011-02-20
  • Contact: DONG Kai

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摘要： 对超音速氧气射流作用下85 t转炉熔池中的渣液和钢液进行了多相流数值模拟研究，分析了熔池内钢液的速度场. 结果表明，随喷吹枪位升高，射流冲击形成的渣坑和钢液凹坑的直径变大，而渣坑与钢液凹坑的深度变小. 当枪位从1.2 m提高到1.8 m时，射流冲击形成的钢液凹坑的直径从1.359 m提高到1.566 m，凹坑深度从0.187 m降低到0.157 m. 同时钢液面下0.2 m处钢液的最大速度从0.48 m/s降低到0.27 m/s；而在熔池液面下0.8 m处，最大速度由0.06 m/s增加到0.09 m/s. 高枪位下熔池钢液速度分布更均匀.

关键词: 三相流, 转炉, 数值模拟

Abstract: The impingement of supersonic oxygen jets on molten steel and slag in an 85 t top-blown convertor bath was studied and the flow field of molten bath analyzed. The results show that with the oxygen lance rising, the diameters of cavities created by jets in the molten slag and steel increase, whilst the depths decrease. With the lance height rising from 1.2 to 1.8 m, the diameter of cavity in the molten steel increases from 1.359 to 1.566 m, whilst the depth decreases from 0.187 to 0.157 m. At the same time, the maximum velocity of liquid steel decreases from 0.48 to 0.27 m/s 0.2 m under the molten steel surface, whilst the maximum velocity of liquid steel increases from 0.06 to 0.09 m/s 0.8 m under the molten steel surface. High lance position has a positive effect on the homogeneous distribution of liquid steel velocity.

Key words: three-phase fluid, convertor, numerical simulation