采用烟气分析法对转炉吹炼过程临界碳含量的研究  

Critical carbon content in BOF blowing process with gas analysis

作　　者：何平[1] 刘浏[1] 刘锟[1] 赵舸[1] 

机构地区：[1]钢铁研究总院冶金工艺研究所,北京100081

出　　处：《北京科技大学学报》2009年第2期156-162,共7页Journal of University of Science and Technology Beijing

摘　　要：采用烟气分析方法连续获得转炉炉内脱碳反应信息,通过倒推计算法研究了转炉吹炼过程中钢水脱碳速度转折点的临界碳含量.结果表明:熔池搅拌能对反应后期脱碳速度转变的临界碳含量影响比较大,随着底吹供气强度增加,搅拌强度增强,临界碳含量[C]d降低,当熔池搅拌能大于一定值时熔池搅拌能变化对临界碳含量[C]d影响不大.对于顶吹转炉,供氧强度对临界碳含量[C]d影响很大,随着供氧强度提高,临界碳含量[C]d显著降低.Based on the information of decarbonization reaction in a convertor continuously obtained with gas analysis technology, the critical carbon content at the decarbonization rate change point, [ C]d, in BOF blowing process was researched by back-calculation method. The results show that the effect of bath stirring energy on the critical carbon content [C]d is very obvious near the refining end point, and the critical carbon content [C]d decreases with increasing stirring energy due to the increase in bottom blowing flowrate; but when the stirring energy is greater than a certain value, the influence of bath stirring energy on the critical carbon content [C]d is very small. Top oxygen blowing flowrate has important effect on the critical carbon content [C]d for a top blowing converter, and with the increase of oxygen blowing flowrate the critical carbon content [C]d decreases.

关 键 词：转炉 烟气分析 脱碳 熔池 搅拌能 

分 类 号：TF711[冶金工程—钢铁冶金]