Physical-numerical simulation and application of optimization of flow control device in a single-stand slab tundish

Huang Lei; Xie Xuqi; Zhang Hua; Li Yuxiang; Huang Zaijing; Huang Kejie; Fang Qing

doi:10.7513/j.issn.1004-7638.2024.06.018

Volume 45 Issue 6

Dec. 2024

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2024 > 45(6): 133-141

Huang Lei, Xie Xuqi, Zhang Hua, Li Yuxiang, Huang Zaijing, Huang Kejie, Fang Qing. Physical-numerical simulation and application of optimization of flow control device in a single-stand slab tundish[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 133-141. doi: 10.7513/j.issn.1004-7638.2024.06.018

Citation:

Huang Lei, Xie Xuqi, Zhang Hua, Li Yuxiang, Huang Zaijing, Huang Kejie, Fang Qing. Physical-numerical simulation and application of optimization of flow control device in a single-stand slab tundish[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 133-141. doi: 10.7513/j.issn.1004-7638.2024.06.018

Citation:

Huang Lei, Xie Xuqi, Zhang Hua, Li Yuxiang, Huang Zaijing, Huang Kejie, Fang Qing. Physical-numerical simulation and application of optimization of flow control device in a single-stand slab tundish[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 133-141. doi: 10.7513/j.issn.1004-7638.2024.06.018

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Physical-numerical simulation and application of optimization of flow control device in a single-stand slab tundish

doi: 10.7513/j.issn.1004-7638.2024.06.018

Huang Lei^{1, 2
,},
Xie Xuqi¹,
Zhang Hua^{1
,
,},
Li Yuxiang¹,
Huang Zaijing²,
Huang Kejie¹,
Fang Qing^{1, 3}

1.
Key Laboratory of Iron and Steel Metallurgy and Resource Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
2.
Guangxi Beigang New Material Co., Ltd., Beihai 536000, Guangxi, China
3.
Hunan Valin Xiangtan Iron and Steel Company Limited, Xiangtan 411101, Hunan, China

Received Date: 2023-12-14
Available Online: 2024-12-30
Publish Date: 2024-12-30

Abstract

Abstract

The reasonable structure and layout of flow control devices are crucial for improving the cleanliness of molten steel within the tundish in the continuous casting process. A combined approach using numerical simulation and physical modeling was employed to analyze the steel flow behavior, residence time distribution (RTD) curves, and inclusions removal rates for different combinations and positions of flow control devices in a single-strand slab tundish at a certain plant. The results indicate that when the distance between the dam and baffle remains constant, a suitable shift of the baffle wall towards the ladle shroud side can prolong the average residence time of the liquid steel by 9.9 s to 17.9 s, reduce the dead zone volume fraction by 0.45 to 0.85 percentage, and decrease the low-temperature region in the tundish, thereby enhancing the purification capability of the molten steel. However, when the distance between the dam and baffle is changed, an excessively large distance between them may cause turbulence in the casting zone of the tundish, with the average residence time of the steel showing no significant extension. Instead, the dead zone volume fraction increases by 0.33 percentage, leading to an enlargement of the low-temperature region in the tundish and a 0.18 percentage increase in the overall inclusion removal rate. Thus, a dam-to-dam distance of 473.5 mm and a baffle-to-ladle shroud distance of 720 mm are considered to be the more ideal combination for flow control device settings. The steel cleanness in the single-strand tundish has been effectively enhance by applying the optimized flow control scheme.
- tundish,
- flow control device,
- physical and numerical modeling,
- RTD curves,
- inclusion removal

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References(26)

References

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