Simulation study on granulation characteristics of blast furnace slag water jet

WU Xinchen; LOU Guofeng; XIAO Yongli; FENG Pengbo

doi:10.7513/j.issn.1004-7638.2025.03.014

Volume 46 Issue 3

Jun. 2025

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2025 > 46(3): 92-99

WU Xinchen, LOU Guofeng, XIAO Yongli, FENG Pengbo. Simulation study on granulation characteristics of blast furnace slag water jet[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(3): 92-99. doi: 10.7513/j.issn.1004-7638.2025.03.014

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WU Xinchen, LOU Guofeng, XIAO Yongli, FENG Pengbo. Simulation study on granulation characteristics of blast furnace slag water jet[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(3): 92-99. doi: 10.7513/j.issn.1004-7638.2025.03.014

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Simulation study on granulation characteristics of blast furnace slag water jet

doi: 10.7513/j.issn.1004-7638.2025.03.014

1.
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China

Received Date: 2025-02-05
Publish Date: 2025-06-30

Abstract

Abstract

Given the potential problems of the conventional gas quenching granulation process, such as the high gas consumption, this study intends to carry out a numerical simulation study of the slag granulation process under the action of high-speed water jet, using water flow as the granulation medium. The VOF-to-DPM model was used to calculate the granulation process and slag size distribution of water jet slag, and to explore the effects of water flow velocity, slag velocity, viscosity and other granulation process conditions on the average particle size and other granulation results. The results show that with the increase of water velocity, the average particle size of the slag after granulation decreases, and when the water velocity reaches 30 m/s, there are basically no large particles above 4 mm under the parameters studied. When the slag velocity increases, and the water flow thickness is sufficient, it has little influence on the granulation effect and particle size distribution. When the water flow thickness is insufficient, there will be a phenomenon of unbroken slag falling directly. In order to ensure that the water flow is sufficient, the water slag ratio should reach 2.2:1; when the slag viscosity increases, the slag crushing effect is getting worse, and the particle size distribution and average particle size increase significantly.
- water jets,
- granulation,
- numerical simulation,
- slag,
- average particle size

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References

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