LF精炼炉双孔差流量底吹模式优化物理模拟  

Physical Modeling for Optimization of Bottom Blowing Method with Different Flow Rates for Two Plugs in Ladle Furnace

作　　者：和炳昶 信自成 张江山 吴军 李立民[2] 刘青 HE Bingchang;XIN Zicheng;ZHANG Jiangshan;WU Jun;LI Limin;LIU Qing(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;Baosteel Group Xinjiang Bayi Iron and Steel Co.Ltd.,Urumqi 830022,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]宝钢集团新疆八一钢铁有限公司,新疆乌鲁木齐830022

出　　处：《工业加热》2024年第3期20-26,共7页Industrial Heating

基　　金：国家自然科学基金资助项目(51974023)。

摘　　要：以国内某钢厂LF精炼炉为研究对象构建了1∶4的水模型,对比研究了双孔等流量底吹和双孔差流量底吹两种模式,并采用响应面法构建了弱底吹流量、强底吹流量和液面高度三因素的钢水混匀时间预测模型,运用该模型得出了差流量底吹模式的最优底吹流量方案。结果表明,双孔差流量底吹模式的混匀效果优于双孔等流量底吹模式;构建的差流量底吹模式混匀时间预测模型拟合效果较好;双孔差流量底吹模式下的混匀时间受到强底吹流量和弱底吹流量的交互作用影响;采用所建模型预测混匀时间与实测值误差均在4%以内。验证了双孔差流量底吹模式相较于等流量底吹模式具有更高的混匀效率,表明了基于响应面法对双孔差流量底吹模式的优化是可行的。A 1:4 water model experiment was carried out based on a ladle furnace prototype,The mixing times of bottom blowing methods with the same flow rate and different flow rates for two plugs are compared.Moreover,a prediction model of mixing time with three factors of weak flow rate,strong flow rate and liquid depth is built to optimize the flow rates based on the response surface methodology.The results show that compared with the same flow rate mode,different flow rates mode will shorten the mixing time.The prediction model is well fitted and has statistical significance.The mixing time under dfferent flow rates mode is affected by the interaction of strong flow rate and weak flow rate.Furthermore,The results show that the experimental values are in good agreement with the predicted values,and the errors are within 4%,which verifies that the optimization of bottom blowing methods with different flow rates for two plugs in LF using response surface methodology is feasible.

关 键 词：钢包炉 水模拟 混匀时间 响应面法 双孔差流量底吹 

分 类 号：TF769.2[冶金工程—钢铁冶金]