采用具备顶底复吹功能的500 kg感应炉模拟了转炉预脱钛工艺，分析了钛的氧化反应机理。试验结果表明：终点铁水钛质量分数平均为0.0082%，脱钛率平均为71.3%。脱钛率随铁水温度升高而降低，随熔池供氧量增加而增加。铁水的终点钛质量分数与终点硅、锰质量分数存在平衡关系，与过程中碳的氧化没有相关性。渣铁间钛分配比为0.6～1.6，随渣中氧化亚铁质量分数的提高而提高，随铁水温度的升高而降低。试验结果和低温下有利于脱钛的理论分析一致。
The titanium removal in BOF converter process was simulated by experiment in 500 kg intermediate frequency induction furnace with top and bottom blowing function,and the reaction mechanism of titanium oxidation was investigat-ed. The results showed that the average end point mass percent of Ti in hot metal was 0.008 2%and the rate of titanium re-moval was 71.3%. In summary,Ti removal rate is decreased with the increase of hot metal temperature,but increased with the increase of the of oxygen supply to the molten pool. There is a balance relationship between the end point Ti con-tent and the end point Si content in hot metal as well as Ti and Mn. However,the end point Ti content is not associated with carbon oxidation. Ti distribution ratio between slag and hot metal ranges from 0.6 to 1.6,and it is increased with the increase of (FeO) content in slag,but decreased with the increase of hot metal temperature. The experimental result is con-sistent with the theoretical analysis which indicates that the reaction of titanium oxidation is more conducive to occur at lower temperature.
参考文献
| [1] | 廖鹏,侯泽旺,秦哲,张兴中,仇圣桃.复吹转炉双渣吹炼脱磷试验[J].钢铁,2013(01):30-36. |
| [2] | 徐匡迪,肖丽俊,干勇,刘浏,王新华.新一代洁净钢生产流程的理论解析[J].金属学报,2012(01):1-10. |
| [3] | 徐掌印,赵增武,李保卫,李楠,路建法.含铌铁水预处理脱硅保铌的研究[J].钢铁研究学报,2013(03):14-17. |
| [4] | 黄希祜.钢铁冶金原理[M]. 3版.北京:冶金工业出版社,2004.,2004. |
| [5] | 刘壮壮,吴巍,倪冰,姚同路,杨勇,贺庆.铁水包预处理脱钛理论分析与试验研究[J].钢铁研究学报,2013(06):13-17. |
| [6] | 刘壮壮,吴巍,郭贤利,孟华栋,赵军普.SiO2-TiO2-CaO-MgO-FeO-MnO渣系与脱钛过程铁水中Ti-Si平衡热力学模型[J].钢铁,2013(06):34-39,49. |
| [7] | 文光远.含钒钛铁水的预处理[J].重庆大学学报（自然科学版）,1999(02):113-120. |
| [8] | 吴巍,倪冰,刘壮壮 .铁水脱钛热力学计算与试验分析[J].北京科技大学学报,2011,33:25.,2011. |
| [9] | 吴巍,倪冰,刘壮壮,胡彦斌,杨勇.用铁精粉进行铁水脱钛预处理的工艺开发[J].中国冶金,2014(10):16-21. |
| [10] | 路文刚,吕明,潘宏涛,朱荣,王慧知,刘煜.脱磷专用转炉的氧枪设计及研究[J].钢铁,2014(05):36-41,105. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%