复吹转炉冶炼低氮钢工艺优化  

Optimizing low-nitrogen-steel metallurgy process in combined blowing converter

作　　者：王玉生[1] 郭翔宇[1] 艾晓礼[1] 王振鹏[1] 王羽[1] 

机构地区：[1]河北钢铁集团邯郸钢铁集团有限责任公司邯宝炼钢厂,河北邯郸056015

出　　处：《炼钢》2012年第5期13-15,19,共4页Steelmaking

摘　　要：通过分析河北钢铁集团邯郸钢铁集团有限责任公司邯宝炼钢厂250 t复吹转炉冶炼高级别管线钢生产过程,提出了钢中氮含量偏高的原因,并针对原因制定了相应的措施,包括采用自动化炼钢减少后吹、提高转炉铁水比、转炉底吹低氮钢冶炼控制模式、钢包底吹氩操作控制和出钢过程防止钢水二次氧化增氮等措施。工艺优化后,降低了转炉钢水的氮含量,钢水氮质量分数平均控制在22.27×10-6。The present paper analyzed the reasons for the high nitrogen content in the pipeline steel and low-nitrogen-steel in a 250 t combined blowing converter metallurgy process and introduced the counter measures including adoption of automatic blowing process and decrease of re-hi.owing, increase in the ratio of hot metal, control on the bottom low-nitrogen model blowing of converter and prevention against nitrogen pick up during tapping and reduction of the nitrogen content in steel （controlling the average ni- trogen content in steel within the limit of 22. 13X10-6）.

关 键 词：低氮钢 优化 脱氮 转炉 

分 类 号：TF729[冶金工程—钢铁冶金]