260t转炉底吹工艺水模试验与工业应用  

Water modeling study and industrial application of bottom blowing technology in 260 t converter

作　　者：颜慧成 丁剑 王现周 史进强 何顺生 唐笑宇 YAN Huicheng;DING Jian;WANG Xianzhou;SHI Jinqiang;HE Shunsheng;TANG Xiaoyu(Technological Center,Hansteel Company of HBIS Group,Handan 056015,China;Hanbao Steel Plant,Hansteel Company of HBIS Group,Handan 056015,China)

机构地区：[1]河钢集团邯钢公司技术中心,河北邯郸056015 [2]河钢集团邯钢公司邯宝炼钢厂,河北邯郸056015

出　　处：《炼钢》2020年第2期1-5,16,共6页Steelmaking

摘　　要：通过建立260 t转炉1∶10水力学试验模型,研究了底吹气流量、底吹砖数量、分布位置等参数对混匀时间的影响,分析了不同底吹条件下熔池流场的典型特征。结果表明:提高底吹砖总气量能显著减少混匀时间;总气量12 L/min条件下,在熔池底部0.6R时,12块砖混匀时间最长;选择采用8块底吹砖后,底吹砖寿命达到了5000炉左右,能稳定控制[%C]·[%O]≤0.0024,炉役平均碳氧积0.0020;熔池流场呈现明显环流趋势,底吹气量过大时熔池出现振荡现象。A 1∶10 water model for a 260 t converter has been established and the effect of bottom-blowing gas flow rate, the number and position of bottom nozzles on bath mixing time has been investigated. The typical feature of flow field in the bath has been observed under different bottom blowing condition. The results show that mixing time of converter bath reduceds with the increase of bottom blowing gas flow rate. When total flow rate is 12 L/min, mixing time is longest with twelve bottom blowing nozzles at 0.6R position. When eight nozzles is used, the life of nozzles reaches 5 000 heats,[%C]·[%O] is smaller than 0.002 4, and the mean value is 0.002 0 in the converter campaign.Flow field in bath shows a circulation from the center to the wall of converter. Vibration of bath appears when bottom blowing gas flow rate exceeds the critical value.

关 键 词：转炉底吹 水模拟 混匀时间 碳氧积 工业应用 

分 类 号：TF715[冶金工程—钢铁冶金]