入炉钢铁料对莱钢50t电弧炉高效化生产的影响

Effect of Charges on Efficiency of 50 t EAF in Laigang

从加料次数和铁水热装两方面论述了入炉钢铁料对莱钢50t电弧炉高效化生产的影响，得出在莱钢目前工艺装备条件下优化炉料配比，加2次料比加3次料的供电时间缩短4min，冶炼周期缩短5．3min，吨钢冶炼电耗降低45．17kW．h，氧气消耗每吨钢降低4．79m^3。铁液热装比在42％左右时氧气消耗最低，50t电弧炉铁液热装比例为35％～48％时可获得高效低耗的冶金效果。

The influence of charging times and melted iron hot charge on highly effective production of 50 t 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 kW · h/ton steel of electricity consumption and 4.79 m^3/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 50 t EAF at 35%-48% of hot charge.