70t电弧炉应用热压块HBI冶炼的工艺实践  

Practice for Steelmaking Process of a 70 t Arc furnace by Using Hot Briquette Iron

作　　者：秦军[1] 

机构地区：[1]宝钢集团新疆八一钢铁股份公司第二炼钢厂,乌鲁木齐830022

出　　处：《特殊钢》2010年第5期36-38,共3页Special Steel

摘　　要：70 t电弧炉的炉料装入量为80～81 t,其中热直接还原铁热压块HBI为14.6～15.2 t,铁水23～27 t,其出钢量77～78 t,电耗316～324 kWh/t,氧耗29.7～33.0 m^3/t,冶炼周期48～54 min。生产实践表明,热压块是优质废钢的替代品,可促进电弧炉脱磷和脱碳反应,降低氧耗1.3～3.2 m^3/t,但每增加1%热压块则增加电耗3.5kWh/t,所以炉料为全废钢时不宜配加热压块,当加入30%铁水和加入10%热压块时可以达到冶炼过程最优化。Charged weight for the 70 t arc furnace is 80 - 81 t including direct reduction iron hot briquette （HBI） 14.6- 15.2 t and hot metal 23- 27 t, its tapping liquid amount is 77 - 78 t, electric power consumption 316 - 324 kWh/t, oxygen consumption 29. 7 -33.0 m^3/t and tap-to-tap time 48 -54 min. Steelmaking practice shows that HBI is a substitute for quality scrap, it is available to improve dephosphorization and de-carbon reaction, decrease oxygen consumption 1.3 -3.2 m^3/t, but with increasing every 1% charge of HBI the electric power consumption increases 3.5 kWh/t, therefore it is not suitable charging HBI only with scrap, as charging 30% hot metal and 10% HBI the steelmaking process is optimization.

关 键 词：70 t电弧炉 热压块 电耗 冶金质量 

分 类 号：TF741.5[冶金工程—钢铁冶金]