Estimation of Energy Consumption in COREX Process Using a Modified Rist Operating Diagram  

作　　者：Wen-long ZHAN Keng WU Zhi-jun HE Qi-hang LIU Xiao-juan WU 

机构地区：[1]School of Materials and Metallurgy,University of Science and Technology Liaoning [2]State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing

出　　处：《Journal of Iron and Steel Research International》2015年第12期1078-1084,共7页

基　　金：Item Sponsored by National Natural Science Foundation of China(50934007,50874129);National High-tech Research and Development Program of China(2009AA06Z105);Special Research Foundation of Young Teachers of University of Science and Technology Liaoning of China(2014QN30);Foundation of Liaoning Educational Committee of China(L2015264)

摘　　要： Fuel consumption in the COREX-3000 process run in Baosteel is currently higher than the design index. Therefore, mass and heat balance equations for the COREX process were established using the basic principles in- cluded in the Rist operating diagram for blast furnace （BF） as a reference. Thermodynamic calculations were then used to modify the Rist operating diagram so that it was suitable for the COREX process. The modified Rist operating dia- gram was then applied for the evaluation of metallization rate （MR） and fuel structure to reduce the energy consump- tion in the COREX process. The modified Rist operating diagram for the shaft furnace （SF） provided a nearly ideal value for the restriction point W when the metallization rate was increased, while the point P on the operating line for the melter gasifier （MG） moved upward due to reduction in the heat required in hearth. The feasibility of reduc- ing the energy consumption during the COREX process by changing the fuel structure was also demonstrated.： Fuel consumption in the COREX-3000 process run in Baosteel is currently higher than the design index. Therefore, mass and heat balance equations for the COREX process were established using the basic principles in- cluded in the Rist operating diagram for blast furnace （BF） as a reference. Thermodynamic calculations were then used to modify the Rist operating diagram so that it was suitable for the COREX process. The modified Rist operating dia- gram was then applied for the evaluation of metallization rate （MR） and fuel structure to reduce the energy consump- tion in the COREX process. The modified Rist operating diagram for the shaft furnace （SF） provided a nearly ideal value for the restriction point W when the metallization rate was increased, while the point P on the operating line for the melter gasifier （MG） moved upward due to reduction in the heat required in hearth. The feasibility of reduc- ing the energy consumption during the COREX process by changing the fuel structure was also demonstrated.

关 键 词：modified Rist operating diagram metallization rate fuel structure energy consumption COREX process 

分 类 号：TF557[冶金工程—钢铁冶金]