转炉吹炼末期钢中氮含量控制技术  

Technology for nitrogen content control of liquid steel in latter period of blowing in BOF process

作　　者：崔阳[1] 冯军[1] 南晓东[2] 白永立[1] 包春林[1] 周德光[1] 朱立新[1] 

机构地区：[1]首都钢铁集团公司技术研究院,北京100043 [2]首都钢铁集团公司迁安钢铁有限责任公可,河北迁安064404

出　　处：《炼钢》2010年第4期75-78,共4页Steelmaking

摘　　要：介绍了日本钢厂在转炉吹炼末期钢中氮含量的控制技术。优化底吹工艺?吹炼末期造泡沫渣和吹炼终点的炉内正压法都有利于控制吹炼终点钢中氮质量分数小于15×10-6。此外,对比了国内钢厂与日本先进钢厂转炉吹炼终点钢中氮含量的控制水平。The technologies to control the content of N in the liquid steel 6urmg me tatter blowing period of BOF process in some steelmaking works in Japan are introduced. The lower content of N than 15 × 10^-6 can be obtained by optimizing bottom blowing process,increasing slag foaming height during the latter period of blowing, and controlling the positive pressure of the converter interior at the blowing end point. Moreover, the control level of the content of N of liquid steel at the blowing end point between the steelmaking works in China and those in Japan is compared.

关 键 词：转炉 氮 炉内正压 造泡沫渣 底吹 

分 类 号：TF703.53[冶金工程—钢铁冶金]