1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114000,Liaoning, China 2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Estimation of Energy Consumption in COREX Process Using a Modified Rist Operating Diagram
1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114000,Liaoning, China 2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
ժҪ 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 included 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 diagram was then applied for the evaluation of metallization rate (MR) and fuel structure to reduce the energy consumption 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 reducing the energy consumption during the COREX process by changing the fuel structure was also demonstrated.
Abstract��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 included 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 diagram was then applied for the evaluation of metallization rate (MR) and fuel structure to reduce the energy consumption 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 reducing the energy consumption during the COREX process by changing the fuel structure was also demonstrated.
��������:National Nature Science Foundation of China;National High-Tech Research and Development Program of China
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E-mail: zhanwenlong288@163.com
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Wen��long ZHAN,,Keng WU,Zhi��jun HE,Qi��hang LIU,Xiao��juan WU. Estimation of Energy Consumption in COREX Process Using a Modified Rist Operating Diagram[J]. �й������ڿ���, 2015, 22(12): 1078-1084.
Wen��long ZHAN,,Keng WU,Zhi��jun HE,Qi��hang LIU,Xiao��juan WU. Estimation of Energy Consumption in COREX Process Using a Modified Rist Operating Diagram. Chinese Journal of Iron and Steel, 2015, 22(12): 1078-1084.
2015, Vol. 22 
