LAPSE:2023.36207
Published Article
LAPSE:2023.36207
CFD Predictions for Mixing Times in an Elliptical Ladle Using Single- and Dual-Plug Configurations
Rohit Tiwari, Bruno Girard, Chantal Labrecque, Mihaiela M. Isac, Roderick I. L. Guthrie
July 4, 2023
Argon bottom stirring is commonly practiced in secondary steelmaking processes due to its positive effects on achieving uniform temperatures and chemical compositions throughout a steel melt. It can also be used to facilitate slag metal refining reactions. The inter-mixing phenomena associated with argon gas injection through porous plugs set in the bottom and its stirring efficiency can be summarized by evaluations of 95% mixing times. This study focuses on investigating the impact of different plug positions and ratios of argon flow rates from two plugs on mixing behavior within a 110-tonne, elliptical-shaped industrial ladle. A quasi-single-phase modeling technique was employed for this purpose. The CFD findings revealed that the optimal position of the second plug is to be placed diametrically opposite the existing one at an equal mid-radius distance (R/2). An equal distribution of argon flow rates yielded the best results in terms of refractory erosion. A comparative study was conducted between single- and dual-plug-configured ladles based on flow behavior and wall shear stresses using this method. Furthermore, a transient multiphase model was developed to examine the formation of slag open eyes (SOE) for both single- and dual-plug configurations using a volume of fluid (VOF) model. The results indicated that the dual-plug configuration outperformed the current single-plug configuration.
Keywords
gas stirring, ladle metallurgy, mathematical modeling, mixing time, porous plug
Suggested Citation
Tiwari R, Girard B, Labrecque C, Isac MM, Guthrie RIL. CFD Predictions for Mixing Times in an Elliptical Ladle Using Single- and Dual-Plug Configurations. (2023). LAPSE:2023.36207
Author Affiliations
Tiwari R: McGill Metals Processing Centre, McGill University, 3610 University Street, Wong Bldg. Room 2M040, Montreal, QC H3A 0C5, Canada [ORCID]
Girard B: Rio Tinto Fer et Titane, 1625 route Marie-Victorin, Sorel-Tracy, QC J3R 1M6, Canada
Labrecque C: Rio Tinto Fer et Titane, 1625 route Marie-Victorin, Sorel-Tracy, QC J3R 1M6, Canada
Isac MM: McGill Metals Processing Centre, McGill University, 3610 University Street, Wong Bldg. Room 2M040, Montreal, QC H3A 0C5, Canada
Guthrie RIL: McGill Metals Processing Centre, McGill University, 3610 University Street, Wong Bldg. Room 2M040, Montreal, QC H3A 0C5, Canada
Journal Name
Processes
Volume
11
Issue
6
First Page
1665
Year
2023
Publication Date
2023-05-30
Published Version
ISSN
2227-9717
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Original Submission
Other Meta
PII: pr11061665, Publication Type: Journal Article
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LAPSE:2023.36207
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doi:10.3390/pr11061665
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Jul 4, 2023
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CC BY 4.0
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Jul 4, 2023
 
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Calvin Tsay
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