Improving mathematical model of burden distribution and correcting chute angle to cope with fluctuation of stock line  

作　　者：Jian-sheng Chen Wen-guo Liu Hao Guo Wang Ding Qing-guo Xue Jing-song Wang Hai-bin Zuo 

机构地区：[1]State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing,100083,China [2]MCC Capital Engineering&Research Incorporation Limited,Beijing,100176,China [3]Hunan Valin Xiangtan Iron and Steel Co.,Ltd.,Xiangtan,411101,Hunan,China

出　　处：《Journal of Iron and Steel Research International》2024年第2期342-356,共15页

基　　金：financial support from the China Minmetals Science and Technology Special Plan Foundation(2020ZXA01);the National Natural Science Foundation of China(U1960205).

摘　　要：Accurate evaluations of the burden distribution are of critical importance to stabilize the operation of blast furnace.The mathematical model and discrete element method(DEM)are two attractive methods for predicting burden distribution.Based on DEM,the initial velocities of the pellet,sinter,and coke were calculated,and the velocity attenuations of the above three particles between the burden and the chute were analyzed.The initial velocity and velocity attenuation were applied to a mathematical model for improving the accuracy.Additionally,based on the improved model,a scheme for rectifying the chute angles was proposed to address the fluctuation of the stock line and maintain a stable burden distribution.The validity of the scheme was confirmed via a stable burden distribution under different stock lines.The mathematical model has been successfully applied to evaluate the online burden distribution and cope with the fluctuation of the stock line.

关 键 词：Burden distribution Mathematical model Discrete element method Velocity attenuation Stock line fluctuation 

分 类 号：TF5[冶金工程—钢铁冶金]