Changes of Multiphase Flow Patterns during Steel Tapping with Simultaneous Argon Bottom Stirring in the Ladle
| Autor: | Kinnor Chattopadhyay, Javier Guarneros-Guarneros, Alfonso Nájera-Bastida, Rodolfo D. Morales, Jafeth Rodríguez-Ávila |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
fluid flow Materials science Physics::Instrumentation and Detectors 0211 other engineering and technologies Ferroalloy chemistry.chemical_element 02 engineering and technology 01 natural sciences Electric arc Physics::Fluid Dynamics ladle 0103 physical sciences Fluid dynamics General Materials Science steel tapping lcsh:Mining engineering. Metallurgy 021102 mining & metallurgy 010302 applied physics Ladle Jet (fluid) Argon Multiphase flow Metals and Alloys Mechanics mathematical simulation Plume bottom stirring chemistry |
| Zdroj: | Metals, Vol 10, Iss 1036, p 1036 (2020) Metals Volume 10 Issue 8 |
| ISSN: | 2075-4701 |
| Popis: | Changes of unsteady multiphase fluid flow patterns of liquid steel during electric arc furnace-ladle tapping operations, with simultaneous argon bottom injection, are simulated using interfacial tracking computing techniques. The impinging steel jet interacts with the argon bubbling plume, suffering mutual bending effects, and imparting non-symmetric flows of liquid steel during the whole ladle filling time. At low bath levels, radial recirculating flows are generated and at high bath levels, these flows are substituted by vertical long flows generated by the permanent interaction between the impinging jet and the argon plume. Turbulence intensity increases as the bath level rises. Low bath levels are suitable for pre-melting and preheating ferroalloy particles. High bath levels of steel in the ladle, close to total ladle filling, are the most suitable conditions for thermal and chemical homogenizations. Argon gas forms an intermittent blanket over the air&ndash liquid steel mix due to its higher density than air during the whole ladle filling time. |
| Databáze: | OpenAIRE |
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