(1. 中南大学 能源科学与工程学院，长沙 410083；2. 三一重工 泵送事业部，长沙 410100；3. 安徽工业大学 冶金与资源学院，马鞍山 243002)
摘 要: 以提高底吹熔炼炉反应区的熔炼效率及优化底吹炉反应区的氧枪结构参数为目标，运用数值模拟的方法，建立底吹熔池熔炼炉内气液两相流动的三维数学模型。应用正交表设计数值模拟的试验方案，以气含率、熔池内熔体平均速度以及平均湍动能为优化指标，采用田口方法对底吹熔池熔炼炉进行了氧枪结构多目标优化研究。结果表明，通过统计分析方法得到氧枪结构最优组合如下：氧枪直径为0.06 m，氧枪间距为0.98 m，氧枪倾角为17°。对优化结果进行统计验证，表明采用田口方法优化底吹炉氧枪结构可行，优化结果可靠。
关键字: 底吹熔炼炉；氧枪结构；田口方法；多目标优化
（1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;2. Pumping Division, Sany Heavy Industry, Changsha 410100, China;3. Institute of Metallurgy and Resources, Anhui University of Technology, Ma’anshan 243002, China）
Abstract:In order to improve the reaction rate and optimize the lance structure of the bottom-blown furnace, a three- dimensional gas/liquid two-phase flow model was established by employing numerical simulation method. By applying the gas holdup, the mean velocity and turbulent kinetic energy of the melt as optimum indexes in bottom-blown furnace, an orthogonal array was selected as the computational fluid dynamics (CFD) experimental plan and the multiple-objective optimization of the lance parameters in bottom-blown furnace was studied employing Taguchi design method. The results show that the optimal parameters of lance were determined by statistical analysis method and the optimal combination can be achieved with the lance size of 0.06 m, the lance spacing of 0.98 m and the lance angle of 17°. The results of statistical validation show that the optimization method is feasible and the optimization results are available.
Key words: bottom-blown furnace; Taguchi design method; lance structure; multiple-objective optimization
