高炉炉缸凝壳和残衬双轮廓内型的诊断模型  

Diagnosis model for profiles of skull and remaining lining in blast furnace hearth

作　　者：张成博 邵磊 肖其林 邹宗树 ZHANG Cheng-bo;SHAO Lei;XIAO Qi-lin;ZOU Zong-shu(School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819

出　　处：《钢铁》2021年第5期17-22,共6页Iron and Steel

基　　金：国家自然科学基金资助项目(51604068,51574064);中央高校基本科研业务专项资金资助项目(N182504012)。

摘　　要：高炉炉缸内衬侵蚀和凝壳的形成决定了炉缸的寿命。为及时掌握高炉炉缸凝壳和残衬双轮廓内型状况,进而及时制定合理应对措施,结合数值传热学、优化导热系数法以及Levenberg-Marquardt法、拟牛顿法和梯度法3种优化算法,建立了高炉炉缸凝壳和残衬双轮廓内型诊断模型。重点阐述了模型的构建思路和过程,构造了象脚状侵蚀样本对模型的有效性和准确性进行了验证,并通过应用于实际炉缸结构的算例进一步展示其实际应用效果。结果表明,3种优化算法中Levenberg-Marquardt法的效果最好。应用实例表明,某厂在产高炉开炉150周后炉缸内凝壳消熔和生成处于动态平衡状态,残衬侵蚀缓慢。The erosion of the lining and the formation of the skull in a blast furnace hearth determines the lifespan of the hearth.Combined with numerical heat transfer,equivalent thermal resistance method,and three optimization algorithms of Levenberg-Marquardt method,Quasi-Newton method,and gradient method,a mathematical model for diagnosing the profiles of the skull and remaining lining in the blast furnace hearth and providing a basis for blast furnace maintenance was established.Emphasis was put on the construction process of the model,and the validity and accuracy of the model were verified by providing an elephant-foot-shaped erosion sample.The practical application was further demonstrated through a calculation example using an actual composite hearth structure.The results indicated that among the three optimization algorithms the Levenberg-Marquardt method has the best performance.Also,it was shown by the application example based on an industrial blast furnace hearth that,150 weeks after blow-on,the melting and buildup of the skull in the hearth is in a dynamic equilibrium state,and the erosion of the remaining lining is slow.

关 键 词：高炉炉缸 耐火材料侵蚀 侵蚀轮廓 优化导热系数法 传热反问题 

分 类 号：TF573.1[冶金工程—钢铁冶金]