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 

作者机构：School of Materials and MetallurgyUniversity of Science and Technology Liaoning State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology Beijing 

出 版 物：《Journal of Iron and Steel Research International》 (Journal of Iron and Steel Research, International)

年 卷 期：2015年第22卷第12期

页      面：1078-1084页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

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) 

主　　题：modified Rist operating diagram metallization rate fuel structure energy consumption COREX process 

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.