TY - GEN
T1 - Effect of inclusions behaviors on the formation of Al 2 O 3 and Spinel inclusions in ladle treatment by simulation model
AU - Kim, Jeong In
AU - Kim, Sun Joong
AU - Shinya, Kitamura
N1 - Funding Information:
The authors gratefully acknowledge the financial support provided by the Iron and Steel Institute of Japan (ISIJ Research Promotion Grant). And, this work was supported by the Korea Institute of Energy Technology Evaluation and Planning(KETEP) and the Ministry of Trade, Industry & Energy(MOTIE) of the Republic of Korea (No. 20172010106250).
Publisher Copyright:
© ICS 2018 - 7th International Congress on Science and Technology of Steelmaking: The Challenge of Industry 4.0. All rights reserved.
PY - 2018
Y1 - 2018
N2 - In order to produce high-end steel with high clearness, it is important to control the composition change in the inclusions. Generally, the composition control of inclusions is carried out in the ladle treatment, however, the control of inclusions is very difficult because the simultaneous and complex reactions among the molten steel, the slag, alloying elements occurred. Many researchers have reported that the various inclusions were observed in industrial process such as pure Al 2 O 3 , MgO-Al 2 O 3 spinel, and the inclusions originating from slag. Those results indicate that the ladle refining process is not in equilibrium. Furthermore, the inclusions in the ladle showed various behaviors such as the flotation of deoxidation products to the slag phase, the entrapment of slag originated inclusions to the steel phase, and the agglomeration between the deoxidation products and the slag originated inclusions Since the behaviors of inclusions influence the amount and total composition changes of the inclusions in the molten steel, the simulation model with behaviors of inclusions is necessary to control the composition changes in the inclusions. In the present study, by using the brushed-up coupled reaction model, we simulated the changes of composition and amount of various inclusions under 210 ton of low alloyed steel during ladle treatment. And the effect of inclusions behaviors on the amount and the composition changes of various inclusions were investigated using the reported results.
AB - In order to produce high-end steel with high clearness, it is important to control the composition change in the inclusions. Generally, the composition control of inclusions is carried out in the ladle treatment, however, the control of inclusions is very difficult because the simultaneous and complex reactions among the molten steel, the slag, alloying elements occurred. Many researchers have reported that the various inclusions were observed in industrial process such as pure Al 2 O 3 , MgO-Al 2 O 3 spinel, and the inclusions originating from slag. Those results indicate that the ladle refining process is not in equilibrium. Furthermore, the inclusions in the ladle showed various behaviors such as the flotation of deoxidation products to the slag phase, the entrapment of slag originated inclusions to the steel phase, and the agglomeration between the deoxidation products and the slag originated inclusions Since the behaviors of inclusions influence the amount and total composition changes of the inclusions in the molten steel, the simulation model with behaviors of inclusions is necessary to control the composition changes in the inclusions. In the present study, by using the brushed-up coupled reaction model, we simulated the changes of composition and amount of various inclusions under 210 ton of low alloyed steel during ladle treatment. And the effect of inclusions behaviors on the amount and the composition changes of various inclusions were investigated using the reported results.
KW - Inclusion Composition Changes
KW - Kinetic Model
KW - Ladle Treatment
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M3 - Conference contribution
AN - SCOPUS:85062068431
T3 - ICS 2018 - 7th International Congress on Science and Technology of Steelmaking: The Challenge of Industry 4.0
BT - ICS 2018 - 7th International Congress on Science and Technology of Steelmaking
PB - Associazione Italiana di Metallurgia
T2 - 7th International Congress on Science and Technology of Steelmaking, ICS 2018
Y2 - 13 June 2018 through 15 June 2018
ER -