摘要
转炉熔池中的混匀时间和熔池搅拌程度均与底吹气量大小有关,底吹元件堵塞也会影响熔池搅拌程度。以250 t转炉为研究对象,按照1:12的比例进行水模实验,通过物理模拟研究底吹气体流量和底吹元件堵塞的不同底吹分布方式对熔池均混时间的影响。结果表明:(1)底吹元件均匀分布方式时,随着底吹气量的增大,转炉熔池混匀时间逐渐减少。(2)底吹元件非均匀分布对称6孔时,底吹气体流量15~25 L/min时,A(3-3对称)分布均混时间较B(2-2-2对称)分布均混时间短;气体流量达到40~50 L/min时,随气量增大,均混时间增大,过大的底吹气量会增大熔池均混时间。(3)非对称分布(3孔)时,底吹气体流量增加,熔池混匀时间缩短。
The mixing time and the degree of agitation of the converter pool are related to the bottom blown gas amount.Clogging of the bottom blown elements can also affect the degree of agita⁃tion in the molten pool.The 250 t converter was used as the research object,the water model experi⁃ments were conducted according to the ratio of 1:12.The effect of bottom blown gas flow and differ⁃ent distribution of bottom blown elements’clogging on the mixing time of the molten pool was stud⁃ied by physical simulation.The results showed that:(1)when the bottom blown elements were uni⁃formly distributed,the converter molten pool mixing time gradually decreased as the bottom blown gas volume increased.(2)When the bottom blown elementswere non-uniformly distributed(6 holes),and bottom blown gas flow was 15-25 L/min,the mixing time of A(3-3 symmetrical)distri⁃bution was shorter than B(2-2-2 symmetrical)distribution.When the bottom gas flow reached 40-50 L/min,the mixing time increased with the increase of gas volume,and too much bottom blown gas volume would increase the mixing time.(3)With asymmetric distribution(3 holes),the mixing time was shortened when the bottom blown gas flow rate increased.
作者
冒建忠
赵占山
岳强
周小宾
MAO JianZhong;ZHAO Zhanshan;YUE Qiang;ZHOU XiaoBin(Maanshan Iron and Steel Co.,Ltd.,Maanshan,Anhui 243003,China;Rizhao Steel Co.of Shandong Iron and Steel Group,Rizhao,Shandong 276806,China;Anhui University of Technology,Maanshan,Anhui 243032,China)
出处
《冶金动力》
2022年第6期92-97,101,共7页
Metallurgical Power
关键词
转炉炼钢
物理模拟
混匀时间
converter steelmaking
physical simulation
mixing time
