|
|
|
| Control of Phosphorus Content for Refining Pipeline Steel X80 in 300 t Combined Blowing Converter |
| LUO Lei, ZHAO Chang-liang, CHEN Yu-xin, YUAN Tian-xiang |
| Shougang Jingtang United Iron and Steel Co.， Ltd.， Tangshan 063200， Hebei， China |
|
|
|
|
Abstract An investigation was carried out on control of phosphorus content of pipeline steel X80 in Shougang Jingtang company. The reason for low phosphorus distribution ratio between slag and steel at the end of steelmaking was analyzed thermodynamically. In the meantime, the suggestions for adjusting composition of converter slag were given, and the optimum amount of slag to get the corresponding dephosphorization rate and phosphorus distribution ratio was determined. The results showed that, under the condition of existing technology, high MgO content in slag led to high melting point of the final slag and subsequently resulted in relatively large difference between the measured and theoretical phosphorus distribution ratio. The calculation indicated that, for the existing process, the amount of slag to be added into converter should be controlled in the range of 43?60 kg/t.
|
|
Received: 19 December 2013
Published: 10 September 2014
|
|
|
|
|
|
| [1] |
王能贤. 磷对钢冲击韧性的影响[J]. 特殊钢, 1993, (4): 53-58.
|
| [1] |
王能贤. 磷对钢冲击韧性的影响[J]. 特殊钢, 1993, (4): 53-58.
|
| [2] |
汪大洲. 钢铁生产中的脱磷[M]. 北京: 冶金工业出版社, 1986,256-278.
|
| [2] |
汪大洲. 钢铁生产中的脱磷[M]. 北京: 冶金工业出版社, 1986,256-278.
|
| [3] |
Care Wagner. Concept of Basicity of Slags[J]. Metall.Trans.B, 1975, 6B(2): 405-409.
|
| [3] |
Care Wagner. Concept of Basicity of Slags[J]. Metall.Trans.B, 1975, 6B(2): 405-409.
|
| [4] |
Nakamura S, Tsukihashi F, Sano N. Phosphorus Partition Between CaOsatd-BaO-SiO2-FetO Slags and Liquid Iron at 1873K. ISIJ international[J]. 1993, 33 (1): 53-58.
|
| [4] |
Nakamura S, Tsukihashi F, Sano N. Phosphorus Partition Between CaOsatd-BaO-SiO2-FetO Slags and Liquid Iron at 1873K. ISIJ international[J]. 1993, 33 (1): 53-58.
|
| [5] |
张立峰, 刘中柱, 蔡开科. 纯净钢生产技术及现状[J]. 河南冶金，2003,11(3): 3-10.
|
| [5] |
张立峰, 刘中柱, 蔡开科. 纯净钢生产技术及现状[J]. 河南冶金，2003,11(3): 3-10.
|
| [6] |
Suito H, Inoue R. Thermodynamic Assessment of Hot metal and Steel Dephosphorization with MnO-containing BOF Slags. ISIJ International[J], 1995, 35(3): 258-265.
|
| [6] |
Suito H, Inoue R. Thermodynamic Assessment of Hot metal and Steel Dephosphorization with MnO-containing BOF Slags. ISIJ International[J], 1995, 35(3): 258-265.
|
| [7] |
田志红. 超低磷钢炉外钢液深脱磷的工艺和理论研究[D]. 北京: 北京科技大学, 2006:65-75.
|
| [7] |
田志红. 超低磷钢炉外钢液深脱磷的工艺和理论研究[D]. 北京: 北京科技大学, 2006:65-75.
|
| [1] |
ZHOU Zhenyu, TANG Ping, ZHOU Zunchuan, HOU Zibing, WEN Guanghua. Optimization on nozzle parameters of 200 t combined blowing vanadium extraction converter[J]. Iron and Steel, 2019, 54(9): 50-56. |
| [2] |
YU Peng-fei，LIU Xiao-liang，ZENG Jia-qing，LIN Teng-chang，YANG Li-bin. Water simulation on mixing of bottom blowing parts with non equilibrium gas supply in converter[J]. Iron and Steel, 2018, 53(6): 39-46. |
| [3] |
DENG Jian-jun，ZHANG Ming-bo，LI Jian-xin，QIU Sheng-tao，WANG Shi-zhao，NING Shu-bo. Thermodynamics of dephosphorization capacity of containing TiO2 and Al2O3 of CaO-based semi-steel slag[J]. Iron and Steel, 2018, 53(3): 27-37. |
| [4] |
ZENG Jia-qing，YANG Li-bin，WANG Jie，LIU Xiao-liang，YAO Tong-lu，DAI Shi-fan. Effect of bottom blowing on dephosphorization technology in combined blowing converter[J]. Iron and Steel, 2017, 52(6): 40-44. |
| [5] |
ZHOU Zhi-qiang，ZHU Zi-zong，DING Yu-chuan，ZHOU Sheng-nan. Effect of Na2O on dephosphorization for high phosphorus SiMn alloys[J]. Iron and Steel, 2017, 52(4): 13-17. |
| [6] |
WANG Chang，YU Yang，NIU Tao，WANG Lin，CHEN Jin. Growth mechanism of oxidized film of X80 pipeline steel at high temperature[J]. Chinese Journal of Iron and Steel, 2016, 28(5): 57-63. |
|
|
|
|
2014, Vol. 49 
