Effect of Charges on Efficiency of 50t EAF in Laigang
SONG Jia-qiang 1, ZHAO Jun-xue 1, LI Fa-xing 1, SUN1Yong-xi 2
(1. School of Metallurgical Engineer, Xi an University of Architecture and Technology, Xi an 710055,Shanxi, China; 2. Special Steel Plant of Laiwu Iron and Steel Co. , Ltd , Laiwu 271105, Shandong, China
Abstract:The influence of charging times and melted iron hot charge on highly effective production of 50t EAF in Laigang was analyzed. The result shows that through optimizing the furnace charge allocated proportion under the present technology and equipment in Laigang, 2 times of charging instead of 3 times can reduce 4.0 min of power supply time , 5.3 min of melting cycle, 45.17 kWh/ton steel of electricity consumption and 4.79 m3/ton steel of oxygen consumption. When the proportion of melted iron hot charge is about 42%, the oxygen consumption is the lowest. The high efficiency and low consumption can be obtained in 50t EAF at 35-48% of hot charge.