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.
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)
出处
《钢铁》
CAS
CSCD
北大核心
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)。
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
blast furnace hearth
refractory erosion
erosion profile
equivalent thermal resistance method
inverse heat-transfer problem
