100t转炉二次燃烧氧枪喷头数值模拟及应用研究  

Numerical simulation and application research on the secondary combustion oxygen lance nozzle of a 100 t converter

作　　者：韩永锋 齐江华 郑淑国 尹振芝[1] 戴智才[1] HAN Yongfeng;QI Jianghua;ZHENG Shuguo;YIN Zhenzhi;DAI Zhicai(Hunan Hualing Lianyuan Iron and Steel Co.,Ltd.,Loudi 417009,China;School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]湖南华菱涟源钢铁有限公司,湖南娄底417009 [2]东北大学冶金学院,辽宁沈阳110819

出　　处：《炼钢》2025年第2期16-23,共8页Steelmaking

摘　　要：以100 t转炉供氧参数为基础,通过k-ε模型计算,设计二次燃烧氧枪喷头并描述转炉内流体的湍射流特征。设计副孔直径13.3 mm、倾角38°、8个副孔的二次燃烧氧枪喷头,在氧气流量24500~26000 m^(3)/h,工作氧压0.85 MPa条件下应用于工业生产。工业试验表明:二次燃烧氧枪喷头可满足正常的转炉造渣要求;相对常规氧枪喷头,在氧流量上限26000 m^(3)/h时,二次燃烧氧枪喷头有更好的冶炼效果,有利于控制转炉喷溅和溢渣;二次燃烧氧枪喷头可发挥炉内CO二次燃烧效果,提升钢水温度23.80℃,提高废钢比1.48%,有较好的应用效果。Based on the oxygen supply parameters of a 100 t converter,a secondary combustion oxygen lance nozzle was designed and the turbulent jet characteristics of the fluid inside the converter were described through k-εmodel calculation.A secondary combustion oxygen lance nozzle with a diameter of 13.3 mm,a tilt angle of 38°,and 8 secondary holes was design.The nozzle was applied in industrial production under the condition of oxygen flow rate of 24500-26000 m^(3)/h and working oxygen pressure of 0.85 MPa.Industrial tests showed that the secondary combustion oxygen lance nozzle could meet the normal requirements for converter slagging.Compared to conventional oxygen lance nozzles,the secondary combustion oxygen lance nozzle had better smelting effect at the upper limit of oxygen flow rate of 26000 m ^(3)/h,which was beneficial for controlling converter splashing and slag overflow.The secondary combustion oxygen lance nozzle could exert the secondary combustion effect of CO in the furnace,increase the temperature of molten steel by 23.80℃,increase the scrap ratio by 1.48%,and achieve good application results.

关 键 词：复吹转炉 二次燃烧喷头 造渣 热效应 

分 类 号：TF724.3[冶金工程—钢铁冶金]