复吹转炉双联工艺冶炼X80管线钢脱磷试验研究  

Experimental Study on Dephosphorization of X80 Pipeline Steel by Duplex Steelmaking Technology for Combined Blowing Converter

作　　者：赵斌 张娜 彭国宏 汪成义[2] 吴伟[2] 吴巍[2] Zhao Bin;Zhang Na;Peng Guohong;Wang Chengyi;Wu Wei;Wu Wei(School of mechanical and electrical engineering,Xichang University,Xichang 615000;Metallurgical Technology Research Institute,Central Iron&Steel Research Institute Co.,Ltd.,Beijing 100081)

机构地区：[1]西昌学院,机械与电气工程学院,西昌615000 [2]钢铁研究总院有限公司冶金工艺研究所,北京100081

出　　处：《特殊钢》2023年第2期52-55,共4页Special Steel

基　　金：西昌学院博士启动基金资助项目(YBZ202208);西昌学院两高人才基金资助项目(LGLZ202103)。

摘　　要：结合某厂生产X80管线钢实际状况,对复吹转炉双联工艺的炼钢脱磷过程进行试验,研究转炉炉渣碱度和氧化性对脱磷的影响。结果表明:在铁水磷含量为0.118%和0.116%,脱磷炉和脱碳炉终点渣碱度CaO/SiO2分别为1.6~2.0、3.3~4.1,T.Fe含量分别为10%~15%、20%~35%的条件下,脱磷炉脱磷率最高达50.85%,平均为38.35%,终点脱磷率最高为95.69%,平均为94.88%,冶炼终点钢水磷含量控制在0.007%以下,最低0.005%,满足X80管线钢生产要求。Combined with the actual situation of X80 pipeline steel production in a factory,the dephosphorization process of combined blowing converter duplex process was tested,and the influence of basicity and oxidizability of converter slag on dephosphorization was studied.The results show that when the phosphorus content of hot metal is 0.118%and 0.116%,the alkalinity of the end slag CaOSiO2of dephosphorization furnace and decarburization furnace is 1.6-2.0 and 3.3-4.1 respectively,and the content of T.Fe is 10%-15%and 20%-35%respectively,the dephosphorization rate of the dephosphorization furnace is as high as 50.85%,the average is 38.35%,the end dephosphorization rate is the highest 95.69%,the average is 94.88%,and the phosphorus content of the molten steel at the end of smelting is controlled below 0.007%,the minimum is 0.005%,meeting the production requirements of X80 pipeline steel.

关 键 词：X80管线钢 复吹转炉 双联工艺 脱磷 

分 类 号：TF704.4[冶金工程—钢铁冶金]