摘要
为解决210t大型转炉供氧强度低、冶炼周期长的问题,设计了10支氧枪喷头并开展了水模试验。结果发现5孔氧枪射流形成的冲击坑独立性更好,相同氧流量下,冲击深度要大于6孔氧枪,其中3号枪和4号枪的冲击深度优势明显。冲击面积(半径)随倾斜角的增大而显著增加,3号、4号、9号和10号枪均具有较好的冲击面积。因此,以3号枪为试验用新5孔氧枪,9号枪为试验用新6孔氧枪开展工业试验,并将冶炼效果与原6孔氧枪进行对比。工业试验结果表明:新6孔氧枪脱磷效果最优,原6孔氧枪脱磷效果最差;相比于原6孔氧枪,新5孔枪不具有缩短供氧时间的能力,而新6孔枪供氧时间平均缩短22 s;新5孔氧枪寿命不及原6孔氧枪,而新6孔枪与原6孔枪寿命相当;相比于原6孔枪,新6孔枪在降低渣中全铁含量和钢铁料消耗上效果明显。
To solve the problems of low oxygen supply intensity and long smelting cycle in the 210 t large converter,10 oxygen lance nozzles were designed and water model test were performed.The results showed that the impact cavity formed by the 5-hole oxygen lance jet had better independence,and under the same oxygen flow rate,its impact depth was greater than that of the 6-hole oxygen lance.Among the ten oxygen lance nozzles,the nozzle 3 and nozzle 4 have the best impact depth.The impact area(radius)significantly increases with the increase of inclination angle,and the nozzle 3,4,9 and 10 have better impact areas compared with other nozzles.Therefore,the nozzle 3 was used as the new 5-hole oxygen lance for industrial testing,and the nozzle 9 was used as the new 6-hole oxygen lance for industrial testing.The experimental results were compared with the original 6-hole oxygen lance.The industrial test results show that in terms of phosphorus removal ability,the new 6-hole lance is the best,while the original 6-hole lance is the worst.Compared to the original 6-hole lance,the new 5-hole lance does not have the ability to shorten the oxygen supply time,while the average oxygen supply time of the new 6-hole lance is shortened by 22 s.In terms of lifespan,the new 5-hole lance is not as good as the original 6-hole lance,while the lifespan of the new 6-hole lance is equivalent to that of the original 6-hole lance.Compared to the original 6-hole lance,the new 6-hole lance has a significant effect on reducing the total iron content in slag and steel material consumption.
作者
邓必荣
周剑丰
刘红军
齐江华
肖爱达
张波
周宇涛
DENG Birong;ZHOU Jianfeng;LIU Hongjun;QI Jianghua;XIAO Aida;ZHANG Bo;ZHOU Yutao(Hunan Hualing Lianyuan Steel Co.,Ltd.,Loudi 417009,China;School of Materials and Advanced Manufacturing,Hunan University of Technology,Zhuzhou 412007,China)
出处
《炼钢》
北大核心
2025年第2期30-37,共8页
Steelmaking
基金
湖南省重点研发计划项目(2023GK2085)。
关键词
210t转炉
水模试验
工业化试验
氧枪喷头
供氧强度
脱磷率
210 t converter
water model test
industrial testing
oxygen lance nozzle
oxygen supply intensity
dephosphorization rate
作者简介
通信作者:张波(1985—),男,博士,副教授,E-mail:13747@hut.edu.cn。
