Abstract: The 260 ton top blown converter in Anshan Iron and Steel Group Corporation is taken as the research object to carry out new double-structure oxygen lance melting commercial test. The key metallurgical parameters of six typical continuous heats are analyzed and discussed, and the results are compared with those of traditional oxygen lance nozzle. Results show that the inclination angles of the big and small nozzles for the new double-parameter oxygen lance are designed as 12° and 17° respectively, and the flow rate of the big nozzles accounts for 60% , the average oxygen blowing time of the new oxygen lance is approximately 1 min shorter than that of the current oxygen lance when the composition of molten iron, tapping composition and smelting steel are the same. The iron and steel charge consumption per ton of steel decrease by 20. 3 kg, and the average oxygen supply intensity increases by 0.23 m³/( t • min).

Key words:  , Double-Structure Oxygen Lance, 260 t Converter, Blowing Time, Oxygen Supply Strength, Steel Consumption

摘要： 以鞍钢260 t顶吹炼钢转炉为研究对象,进行新型双结构氧枪的冶炼工业实验。分析讨论了具有代表性连续6炉的关键冶炼参数,并将结果与传统结构氧枪喷头进行比较。结果表明,当新型双结构氧枪采用大小孔分别为12°、17°倾斜角度且大孔流量占比60%设计,在预处理铁水成分以及出钢成分相同的情况下进行同一钢种的冶炼,其平均吹氧时间比目前的氧枪缩短近1min;吨钢的钢铁料消耗降低了20.3 kg;平均供氧强度提高了0.23 m³/（t·min）。