Numerical model of collision aggregation and remove of inclusions after aluminum deoxidization in RH reactor

Hao Jiujiu

doi:10.7513/j.issn.1004-7638.2022.01.019

Volume 43 Issue 1

Mar. 2022

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Hao Jiujiu. Numerical model of collision aggregation and remove of inclusions after aluminum deoxidization in RH reactor[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 125-130. doi: 10.7513/j.issn.1004-7638.2022.01.019

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Hao Jiujiu. Numerical model of collision aggregation and remove of inclusions after aluminum deoxidization in RH reactor[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 125-130. doi: 10.7513/j.issn.1004-7638.2022.01.019

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Numerical model of collision aggregation and remove of inclusions after aluminum deoxidization in RH reactor

doi: 10.7513/j.issn.1004-7638.2022.01.019

Hao Jiujiu^{1, 2
,}

1.
Department of Metallurgy and Environmental Engineering, Shanxi Engineering Vocational College, Taiyuan 030009, Shanxi, China
2.
School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083, China

Received Date: 2021-01-19
Available Online: 2022-04-24
Publish Date: 2022-02-28

Abstract

Abstract

Based on the classical model of collision aggregation of inclusions, the growth mode of exponential increase of inclusions is used to establish the numerical model of reaction of aluminum and oxygen, collision and aggregation of inclusions, remove of inclusions, for the purpose of predicating the mass fraction and distribution of inclusions during the process of RH. The simulated results are found out good agreement previous findings from the developed model, the mass fraction of inclusions is sharply increasing with the plunge of aluminum. The mass fraction of inclusions increases from 0 to 0.0065% after 300 s circulation. Then the mass fraction reaches the maximum value. Afterwards the inclusions begin to remove because of the float and adsorption by the wall and the top slag of RH. The mass fraction of inclusions decreases to about 0.01% after 900 s circulation. The percentage of inclusions removal is 84.6%. The circulation has effectively removed the inclusions in RH. After 900 s circulation the maximum mass fractions of inclusions of diameter 2 μm and 50.8 μm are 0.000 02% and 0.0078% respectively.
- RH,
- reaction of aluminum and oxygen,
- inclusions,
- collision aggregation,
- numerical model

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References(20)

References

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