Abstract: Based on the software Fluent,the flow state and velocity distribution of hot metal in the 100 t iron ladle KR desulphurization with impeller diameter 2.8 m and height 0.75 m,and iron height 3.1 m are numeric-simulated. Through the comparative analysis on the flow field and turbulent kinetic energy with impeller diameter 0.7 ~ 1.1 m,immersion depth 1.00-1.34 m,and stirring speed 60 〜140 i/min,the best process parameters are 120 r/min of stirring speed, 1.34 m of immersion depth and 0.9 m of impeller diameter. Through the process practice, the desulphurization rate of hot metal can reach up to more then 96%.

摘要： 基于Fluent软件对直径2.8 m、搅拌桨高0.75 m、铁水高度3.1 m的100 t铁水罐KR脱硫进行数值模拟,得到铁水罐内铁水的流动状态及速度分布。通过对搅拌桨直径0.7～1.1 m,浸入深度1.00～1.34 m和搅拌转速60～140 r/min下的流场和湍动能进行对比分析,得出最佳的工况为:搅拌转速120 r/min、浸入深度1.34 m、搅拌桨直径0.9 m。通过工艺实践,铁水脱硫率达到96%以上。