等温固定床多球团还原模型  

Reduction model of multiple pellets in isothermal fixed beds

作　　者：国宏伟[1,2] 范德球[1] 张建良[1,2] 曹英杰[1] 孙德鹏[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]北京科技大学钢铁冶金新技术国家重点实验室,北京100083

出　　处：《北京科技大学学报》2013年第2期161-168,共8页Journal of University of Science and Technology Beijing

基　　金：高等学校博士学科点专项科研基金资助项目(20090006120004);国家自然科学基金资助项目(51204013);中央高校青年人才培养基金资助项目(FRF-TP-12-020A)

摘　　要：针对单个球团未反应核模型在研究多球反应体系中存在的局限性,首先基于单球团未反应核动力学模型,构建了等温固定床中多球体系下球团矿还原模型;然后通过引入无因次变量,得到方程的解析解,并且采用特征线法进行求解得到了方程的数值解;最后在中温管式炉中设计了等温固定床球团矿还原试验.实验结果与模型计算值有较好的吻合.For the limitation of the single-pellet unreacted shrinking core model in studying a multi-pellet system, a mathematical model of iron oxide pellet reduction in an isothermal fixed bed was constructed based on the reduction behavior of single pellets. The analytical solution of the model was obtained by introducing dimensionless variables, and the characteristic line method was used for numerical analysis. At last the reduction experiments of the fixed bed consisted of multiple pellets were performed in a middle temperature tube furnace and the predicted results by the model agreed well with the measured ones by experiment.

关 键 词：球团矿 矿石还原 数学模型 等温 固定床 

分 类 号：TF325.1[冶金工程—冶金机械及自动化]