|
|
|
| Study on Inclusions Removal from Liquid Steel by Soft Bubbling |
| WANG Wenjun Jingang Liu Ning Hao Yongdong Li |
| |
|
|
|
|
Abstract Industrial trials were carried out in 100t ladles in Shouqin steel plant to study the correlation between the soft bubbling and inclusions removal degree. The results showed that at the beginning of soft bubbling the T[O] in steel is about 16ppm and most inclusions are smaller than 20µm. The inclusions in liquid steel could be removed efficiently with a gas flow rate of 80-110L/min and a soft bubbling duration of more than 15min. Under this condition the inclusion cleanliness index was high, which stands for the inclusions amount in steel and can keep larger than 0.97. When the gas flow rate was over 120L/min or under 60L/min, the inclusion cleanliness index was low, which infers that the inclusions in steel were not removed efficiently.
|
|
Received: 24 September 2009
|
|
|
|
| [1] |
HOU Xin-mei, LIU Yun-song, WANG En-hui. Effect of ladle-lining refractory on non-metallic inclusions in steel[J]. Iron and Steel, 2020, 55(6): 15-24. |
| [2] |
NIU Kai-jun, YANG Wen, ZHANG Li-feng, CHU Yan-ping, ZHANG Hong-qi, GUO Zi-qiang. Thermodynamics and industrial practice of formation of inclusions during solidification of tire cord steels[J]. Iron and Steel, 2020, 55(6): 61-67. |
| [3] |
YAN Xue-qiang1,2,ZHENG Wan1,2,WANG Guo-wei1,2,YAN Wen1,LI Guang-qiang1,2. Effect of microporous MgO refractories on steel cleanliness[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(6): 483-490. |
| [4] |
LI Xiao-yuan,SHI Jie. Ballistic behavior of high strength steel targets during high speed impact of projectile[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(5): 429-436. |
| [5] |
LIU Peng, SUI Ya-fei, XU Gang-jun, ZHOU Jun-jun, ZENG Quan-wen. Inclusion generation and control of low carbon steel[J]. Iron and Steel, 2020, 55(2): 67-74. |
| [6] |
CHU Yan-ping, CHEN Zhi-yong, LIU Nan, ZHANG Li-feng. Formation and control of spinel inclusions in high-speed heavy rail steel[J]. Iron and Steel, 2020, 55(1): 38-46. |
|
|
|
|
2010, Vol. 45 
