半钢冶炼转炉终点钢水氮含量控制技术  

Nitrogen control technology of molten steel at the endpoint of semi-steel steelmaking converter

作　　者：陈均[1,2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京10083 [2]攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《炼钢》2015年第5期51-55,60,共6页Steelmaking

摘　　要：针对攀钢集团西昌钢钒有限公司半钢炼钢转炉终点钢水氮含量偏高的问题,对转炉冶炼过程钢水氮含量变化规律及其影响因素进行了研究,并提出了规范废钢加入量、减少补吹、采用专用底吹供气模式及冶炼后期采用发泡剂促进脱氮等氮含量控制技术措施。应用效果表明,采用转炉终点氮含量控制技术后,200 t转炉终点钢水平均氮质量分数由18×10-6以上降低到13×10-6以内,实现了氮质量分数小于15×10-6的稳定控制。To solve the problem of high nitrogen content at the endpoint of semi-steel steelmaking converter in Pangang Group Xichang Iron ＆ Steel Co. , Ltd. , the variation and influence factors of nitrogen during blowing have been carried out. And then, control measures of nitrogen mass fraction were raised, such as controlling the scrap consumption, reducing reblowing, using custom-made bottom blowing system and charging foaming agent. Application effect indicated that by using these technologies, the average nitrogen mass fraction at the end-point of 200 t converter was reduced from over 18 ×10^-6 to less than 13×10^-6, and nitrogen mass fraction less than 15×10^-6was carried out.

关 键 词：半钢炼钢 氮含量 转炉终点 

分 类 号：TF704.6[冶金工程—钢铁冶金]