RH-MFB精炼过程钢包内钢液流动与碳浓度分布的模拟研究

Numerical Simulation on Molten Steel Flow and Carbon Concentration Distribution in Ladle during RH Vacuum Degassing Process

根据某厂RH-MFB的生产实际,采用CFX软件建立钢包内钢液流动与碳浓度分布的耦合数学模型,对钢液的流动特性以及碳浓度的分布情况进行研究,利用现场数据验证所建模型,分析了脱碳后期钢液碳浓度的分布情况,考察了工艺设备等因素对脱碳处理过程的影响,为超低碳钢的工艺优化提供理论依据和指导。

According to the actual production condition of RH- MFB in one plant, the coupling mathematic model of molten steel flow and carbon concentration distribution in ladle is established by using the commercial code CFX. The flow characteristic of molten steel and variation of carbon concentration are investigated, and the validity of mathematic model is verified by comparing simulation results with measuring results. Carbon concentration distribution is analyzed at the last stage of decarburization, and the influence of process equipment on decarburization process is discussed. So some useful theoretical evidence instructions are put forward for ultra- low- carbon steel production.