炉外精炼过程钢液氧含量对脱硫效率影响显著,对冷轧薄板钢种如在LF中进行深度脱硫,由于必须将钢液氧含量降至很低水平,容易造成钢中硅含量超标等问题.采用LF工艺不能很好地解决既能强烈搅拌钢水促进夹杂物去除又能防止钢水被炉渣和炉气氧化的矛盾,因此须对炉渣进行还原改质处理,同时会导致生产成本增加和转炉连铸机生产节奏变慢等问题.采用CAS和RH精炼工艺能够在防止钢水被炉渣和炉气氧化的前提下,强烈地搅拌钢水以促进夹杂物上浮,生产节奏也能适应大型转炉炼钢和快速板坯连铸需要.对于LCAK、ELC、ULC等冷轧薄板钢种,应以采用CAS和RH精炼工艺方法为主导.
参考文献
| [1] | Takeuchi S.Steelmaking Process Technologies for Cleanliness and Inclusion Control of Ultra Low Carbon Steel[A].Tokyo:ISIJ,2005:65-88. |
| [2] | Burns M T;Schade J.Recent Developments in Measuring Steel Cleanliness at Armco Steel Company[A].L.P.:ISS,1991:513-523. |
| [3] | Bannenberg N;Schutz C-H.Process Routes for the Production if IF Steels and Some Other High Quality Steel Grades With Regard to Steel Cleanliness[A].Beijing:The Chinese Society for Metals and Verein Deutscher Eisenhuttenleute,2001 |
| [4] | Richardson F D;Fincham C J B .Sulphur in Silicate and Aluminate Slags[J].Journal of Iron and Steel Institute,1954,178(09):4-15. |
| [5] | Turkdogan E T.Fundamentals of Steelmaking[M].UK:The Institute of Materials,1996 |
| [6] | Sommerville I D.The Measurement,Prediction and Use of Capacities of Metallurgical Slags[A].Sweden:Lulea,1986:1-8,21. |
| [7] | Duffy M D .An Interpretation of Glass Chemistry in Terms of the Optical Basicity Concept[J].Journal of Non-Crystalline Solids,1976,21:373-410. |
| [8] | Ogura Y;Kiguchi Y .Development of Secondary Refining Process and Its Application to Production of Clean Steel[J].Tetsu-to-Hagane,1986,72(09):1309-1315. |
| [9] | Fujimoto H;Soejima T .Development of Ladle Arc Refining Process[J].Tetsu-to-Hagane,1988,74(10):1962-1969. |
| [10] | 殷瑞钰,王新华.适用于转炉-薄板坯连铸钢厂的合理炉外精炼工艺的探讨[J].钢铁,2005(10):1-7. |
| [11] | 史国敏,张立,郑贻裕,职建军,王文军,张炯明,王万军,王新华.转炉--CAS--连铸工艺生产低碳铝镇静钢中非金属夹杂物的研究[J].钢铁,2000(03):12-15,72. |
| [12] | 袁晓鹏,李宏,王新华,李超,马学中,孙群,孟劲松,王霆,张富强.转炉-ANS-连铸工艺生产低碳铝镇静钢洁净度研究[J].钢铁,2003(11):15-17,25. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%