Abstract: An 100 t AC shaft are furnace with transformer rating capacity 60~ 72 MVA was put into production at An- yang Steel in November 1999.With adopted the operation technology such as charging about 33% hot metal,shaft preheating temperature of scrap between 400 ℃ and 600°℃,oxygen-oil burner and water cooling oxygen jet operation and OBT tapping(taping amount 110 t),the electric power consumption of arc furnace has decrease to 220 kWh/t,the operation rate is up to 92%,average tap-to-tap time 41 min,the annual output over one million to obviously decrease production cost.

Key words:  , AC, Shaft , Arc , Furnace, Tap-to-Tap , Time, Hot , Metal , Charging, Process , Practice

摘要： 安阳钢铁公司100 t交流竖式电弧炉于1999年11月投产,其变压器容量为60~72 MVA。冶炼时兑33%左右的铁水,竖炉预热废钢的温度达400~600℃,并采用氧油烧嘴和水冷碳氧枪操作和圆心炉底出钢(出钢量110 t)等操作技术使电弧炉电耗降至220 kWh/t,电弧炉作业率达92%,冶炼周期平均为41 min,年产钢量超过100万t,显著降低了生产成本。

关键词: 交流, 竖式电弧炉, 冶炼周期, 铁水热装, 工艺实践