顶吹射流对熔池作用效果的等温实验研究
来源期刊：上海金属2011年第3期
论文作者：徐栋 苍大强 段剑锋 秦丽雪
文章页码：37 - 42
关键词：氧气顶吹转炉； 水力学模型； 喷溅量； 混匀时间； 搅拌效果
Key words：BOF； Hydrodynamics Model； Splashing Amount； Mixing Time； Stirring Effect
摘 要：采用1∶10水力学模型对100 t氧气顶吹转炉进行了等温实验研究。用正交实验方案,研究了氧枪喷头类型、枪位和气体流量等因素对冲击深度、喷溅量及熔池混匀时间的影响。研究结果表明,增加喷孔倾角、提高枪位及减小气体流量均可导致冲击深度变浅。射流倾角减小、枪位提高、气体流量增大均会引起熔池喷溅量增加。当喷孔倾角为24°,枪位≤135 mm,气体流量为22 Nm3/h时,熔池具有最短的混匀时间。根据相似原理可知,实际转炉条件下,适当增加氧枪喷孔倾角,枪位≤1.35 m,气体流量控制在18 000 Nm3/h左右,有利于减少熔池喷溅,增强熔池搅拌效果,缩短熔池混匀时间。
Abstract: The effect of oxygen lance nozzles,lance level and top blowing rate on bath penetrating depth,splashing amount and mixing time was studied by orthogonal design experiment using 1∶10 water model for 100 t basic oxygen converter.Results showed that the penetrating decreased with the increasing of hole angle and lance level,and decreasing of top blowing rate.The splashing amount increased with the decreasing of lance hole angle,increasing of lance level and gas flowing rate.When lance hole angle was 24°,lance level was 135 mm and gas flowing rate was 22 Nm3/h,the mixing time in bath was the shortest.For the real converter condition,according to the similarity principle,the minimum splashing amount and shortest mixing time was available when the hole angle was larger,the real lance level was no more than 1.35 m and gas flowing rate was about 18 000 Nm3/h.
徐栋1，苍大强1，段剑锋1，秦丽雪1
(1.北京市北京科技大学 冶金与生态工程学院)
摘 要：采用1∶10水力学模型对100 t氧气顶吹转炉进行了等温实验研究。用正交实验方案,研究了氧枪喷头类型、枪位和气体流量等因素对冲击深度、喷溅量及熔池混匀时间的影响。研究结果表明,增加喷孔倾角、提高枪位及减小气体流量均可导致冲击深度变浅。射流倾角减小、枪位提高、气体流量增大均会引起熔池喷溅量增加。当喷孔倾角为24°,枪位≤135 mm,气体流量为22 Nm3/h时,熔池具有最短的混匀时间。根据相似原理可知,实际转炉条件下,适当增加氧枪喷孔倾角,枪位≤1.35 m,气体流量控制在18 000 Nm3/h左右,有利于减少熔池喷溅,增强熔池搅拌效果,缩短熔池混匀时间。
关键词：氧气顶吹转炉； 水力学模型； 喷溅量； 混匀时间； 搅拌效果
