VD炉氧脱碳工艺生产实践  

Practice of VD furnace oxygen decarburization process

作　　者：杨荣光 闫占辉 高宠光 石树东 王国连 刘金刚 YANG Rong-guang;YAN Zhan-hui;GAO Chong-guang;SHI Shu-dong;WANG Guo-lian;LIU Jin-gang(Steel Rolling Department,Shougang Jingtang United Iron and Steel Co.,Ltd.,Tangshan 063200,Hebei,China;Technology Center,Shougang Jingtang United Iron and Steel Co.,Ltd.,Tangshan 063200,Hebei,China)

机构地区：[1]首钢京唐钢铁联合有限责任公司钢轧作业部,河北唐山063200 [2]首钢京唐钢铁联合有限责任公司技术中心,河北唐山063200

出　　处：《钢铁》2021年第4期39-43,51,共6页Iron and Steel

摘　　要：为了研发MCCR低碳钢种,采用KR→转炉→VD炉→LF炉工艺流程,开发利用VD炉氧脱碳工艺,生产超低碳钢(w([C])小于0.02%)。复吹转炉出钢w([C])小于0.06%,沸腾出钢,出钢过程平均脱碳率为33%;VD炉真空处理保持深真空(小于67Pa),脱碳率达到65%,实现脱碳后平均w([C])为0.006 7%,最低w([C])为0.002 3%。LF炉采用控制增碳深脱硫,完全能够满足MCCR超低碳超低硫钢生产需求。To research and develop MCCR low carbon steel,in the process of " KR→converter→VD furnace→LF furnace",the decarburization process using oxygen in VD furnace was developed to produce ultra-low carbon steel(w([C])<0.02%).w([C])was less than 0.06%and the average decarburization rate was 33% during the tapping of boiling steel from the combined blown converter.The vacuum treatment was used in VD furnace.The high vacuum was maintained and the vacuum degree is less than 67 Pa.The decarburization rate reached 65%.The average w([C])was 0.006 7%,and the lowest w([C])was 0.002 3%.In LF furnace controlled carbonization and deep desulfurization were employed,which can completely meet the production demand of MCCR ultra-low carbon and sulfur steel.

关 键 词：VD炉精炼 碳氧积 真空氧脱碳 脱碳率 超低碳钢 

分 类 号：TF769[冶金工程—钢铁冶金]