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结合前期水模拟结果,利用FLUENT软件对河北钢铁集团承德钢铁集团有限公司炼钢二厂120 t LF进行了底吹氩气的三相流数值模拟,模拟结果表明:优化后钢包熔池速度与湍动能分别增大了11.8%和18.3%,死区体积减小了33.7%,有利于钢包内熔池的传热、传质以及夹杂物去除等过程。将优化后钢包底吹位置应用于该厂120 t LF,结果表明:T.O去除率提高了5.9%,w(N)降低了6.4%;总夹杂物去除率提高了5.5%;大型夹杂物去除率提高4.9%。达到改善钢包结构,优化钢液流动状态,提高LF精炼的目的。
Combining with the results of the previous water simulation, the FLUENT software was used to simulate the three-phase flow of 120 t LF at the bottom of No.2 Steelmaking Plant of Chengde Iron & Steel Group Co., Ltd. of Hebei Iron and Steel Group. The simulation results show that the optimized ladle bath velocity and turbulence Kinetic energy increased by 11.8% and 18.3% respectively, and the volume of dead zone decreased by 33.7%, which is beneficial to the heat transfer, mass transfer and inclusions removal of molten pool in ladle. The optimized ladle bottom blowing position was applied to 120 t LF of the plant. The results showed that TO removal rate increased 5.9%, w (N) decreased 6.4%, total inclusion removal rate increased 5.5%. Large inclusions removal rate Increase by 4.9%. To improve the ladle structure, optimize the flow of molten steel, LF refining purposes.