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Mechanistic study of enhanced inclusion removal in molten steel via reaction-generated bubbles

delete2026-06-24
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PRE
AI
P
Peng Zhao
C
Chen-Xiao Li *
D
Ding-Guo Zhao
S
Shu-Huan Wang
K
Kaixuan Zhang
Q
Qian-Qian Gao
DOI:10.1016/j.jtice.2026.106880delete
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Abstract

Abstract

En 中文
• CO2 reacts with dissolved carbon in molten steel (CO2+ [C] → 2CO), forming a reaction-generated bubble system that significantly enhances melt stirring and mass transfer. • The in situ generated CO bubbles enhance molten steel flow and mass transfer, thereby facilitating inclusion transport and removal; compared with Ar, the removal efficiency increases from 26.16% to 39.52%. • MnS inclusions undergo spheroidization under CO2 conditions, driven by interfacial energy minimization and controlled by diffusion.
Keywords:
CO2 bottom blowing
Molten steel refining
Bubble formation
Inclusion removal
Inclusion evolution mechanisms

Journal

Journal of the Taiwan Institute of Chemical Engineers cover
Journal of the Taiwan Institute of Chemical Engineers
IF:
6.3
Papers:
6.3K
Citations:
2.1W

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