“三脱”预处理铁水温降机理模型的研究

Research on Temperature Drop Model of Hot Metal in Simultaneous Desulphurization and Dephosphorization and Desiliconization Pretreatment Process

针对宝钢二炼钢铁水三脱预处理工序,建立了铁水温降机理模型。模型计算结果表明,预测精度与参数的选取密切相关;随熔剂中CaO含量增加,Fe2O3含量减少,铁水温降减小;随脱磷率增大、碳酸钠利用率提高,铁水温降减小;随脱碳率修正系数增大,铁水温降增大。

Based on the hot metal pretreatment process at No. 2 Steelmaking Plant of Baosteel, a temperature drop model of hot metal was developed. The calculated results show that the prediction precision of the model was closely related to the selected parameters. The temperature drop of hot metal decreased with increase of CaO content and decrease of Fe2O3 content in the flux. Moreover, it decreased with increase of dephosphrization rate and utilizing rate of Na2CO3. However, the temperature drop of hot metal increased with increase of correction coefficient of decarbonization rate.