【作者】 张岭； 于波； 钟良才； 王立新； 贺龙龙； 翁莉；

【Author】 Zhang Ling;Yu Bo;Zhong Liangcai;Wang Lixin;HE Longlong;Weng Li;Advanced Research Institute of Low Carbon Steel, Northeastern University;School of Metallurgy,Northeastern University;Jianlong Fushun New Iron and Steel Plant;

【机构】 东北大学低碳钢铁前沿技术研究院； 东北大学冶金学院； 建龙集团抚顺新钢铁炼钢厂；

【摘要】 以120t顶底复吹转炉为原型,依据相似原理在实验室开展了几何相似比为1:10的顶底复吹转炉复吹工艺物理模拟试验,研究了顶吹气体流量、底吹气体流量以及氧枪枪位对于转炉熔池搅拌混匀的影响,结果表明:当顶吹流量为122m~3/h,底吹流量为1.074m~3/h,氧枪枪位为200mm时,熔池的搅拌效果最好,混匀时间最短,冲击深度约为熔池深度的一半,在合理范围之内。本试验条件下认为复吹时枪位在200mm可获得较短的混匀时间,后搅时底吹流量为1.608m~3/h时搅拌效果好,混匀时间较低。更多还原

【Abstract】 Physical experiment in a model with a geometric similarity ratio of 1:10 as a prototype based on the similarity theory was conducted in the laboratory for a 120 t top-bottom combined blown converter. The effects of top gas flow rate,bottom gas flowrate and top lance height on the bath mixing were studied. The results show that when the top gas flow rate was 122 m3/h, the bottom blowing flow rate was 1.074 m3/h, and the top lance height was 200 mm, the mixing effect in the converter bath was the best and the mixing time was the shortest. The impact depth is about half of the converter bath depth,which was within a reasonable range. Under the conditions in the study, it was considered that 200 mm top lance height in the top and bottom combination blowing can obtain a shorter bath mixing time. In the post-stirring, the bath stirring effect is batter, and the mixing time is lower with the bottom gas flow rate of 1.608 m3/h.更多还原