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
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
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.
2011, Vol. 11 
