Numerical simulation on phase transformation characteristics during water quenching process of single slag particle

LI Chengbo; LOU Guofeng; FENG Pengbo; XIAO Yongli

doi:10.7513/j.issn.1004-7638.2026.04.020

Volume 47 Issue 4

Aug. 2026

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LI Chengbo, LOU Guofeng, FENG Pengbo, XIAO Yongli. Numerical simulation on phase transformation characteristics during water quenching process of single slag particle[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(4): 173-181. doi: 10.7513/j.issn.1004-7638.2026.04.020

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LI Chengbo, LOU Guofeng, FENG Pengbo, XIAO Yongli. Numerical simulation on phase transformation characteristics during water quenching process of single slag particle[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(4): 173-181. doi: 10.7513/j.issn.1004-7638.2026.04.020

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Numerical simulation on phase transformation characteristics during water quenching process of single slag particle

doi: 10.7513/j.issn.1004-7638.2026.04.020

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

More Information

Received Date: 2026-01-04
Accepted Date: 2026-02-09
Rev Recd Date: 2026-02-04
Publish Date: 2026-08-31

Abstract

Abstract

To clarify the phase transformation mechanism of molten slag during water quenching and optimize the process parameters, this paper investigates the phase transformation process of molten slag after contact with water. First, combining the characteristics of the vapor film formed at the moment when molten slag contacts water with the flow field properties, a molten slag model containing a vapor film was established. Then, taking a particle size of 3 mm, a water velocity of 5 m/s, and an initial temperature of 1300 ℃ as the basic working conditions, the changes in the temperature field, phase transformation process, and temperature differences at different positions of the molten slag were analyzed. On this basis, the effect of water velocity on the heat exchange process of molten slag was explored, as well as the heat transfer characteristics of molten slag with different particle sizes under the same water velocity. In addition, supplementary verification was conducted on the optimal water velocity for cooling molten slag with particle sizes of 4 mm and 5 mm. The results show that water velocity has a threshold effect on the heat exchange of molten slag; its influence tends to flatten out when the velocity exceeds 5 m/s. Molten slag with particle sizes of 4 mm and 5 mm cannot meet the cooling requirements at a water velocity of 5 m/s, while a water velocity of 10 m/s can achieve effective cooling. Finally, the optimal process scheme was determined. This study provides theoretical basis and data support for the parameter optimization of the molten slag water quenching process.
- water-quenched molten slag,
- phase transformation process,
- vapor film,
- temperature field,
- process parameter optimization

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References

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