【摘要】 本文对氧气底吹连续炼铅过程中底吹喷枪的合理布置及隔墙位置的选择进行了模型实验研究。整个试验过程实现了用微机控制采样及数据处理、作图等实时处理。用 Navier-Stokes 方程及相似分析相结合的办法提出了枪距布置合理指数 S/W 与修正的 F’r 准数和几何相似准数 H/D 及 W/D 的函数关系式。按此关系进行了一系列试验得出准数方程如下S/W=26.224（W/D₀）^-0.629·（F’r）^0.122·（H/D）^0.523为了证实上述关系式是否可用,又用 DI SA 热膜探针测定了熔池二维流场,将测得的搅拌范围边界曲线延长至液面可得到搅拌直径 S,两种方法所得结果比较一致。测定了 RTD 曲线并用湍流扩散模型研究了隔墙的合理位置。根据本研究对该过程提出了改进建议。更多还原

【Abstract】 The optimum lance distri butionand dam location in the continuous lead- making process with bottom oxygen injection have been studied.The REAL- TIME-PROCESSING of sampling control and experimental data has also been carried out by a micro-computer.The jetting process was studied by means of the sinularity theory and Naier-Stokes equation.A dimensionless group fornua was obtained as follows S/W=26.224（W/D₀）^-0.629（F′_r）^0.122（H/D）^0.523 In oder to prove the validity of this formula,the two-dimensional flow field was meassured by using a DISA hot-film anemometer.The RTD curve and the optimum dam location were studied by means of the turbulent dispe- rsion model.更多还原