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Applied CFD in the Metallurgical Industry

Learn about the application of Computational Fluid Dynamics (CFD) in the metallurgical industry, specifically in the process of sulphur refining of steel. Explore reaction models, scalar equations, empirical models, and validation techniques used in this application. Gain insight into the challenges and benefits of using CFD in metallurgical processes.

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Applied CFD in the Metallurgical Industry

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    1. Applied CFD in the Metallurgical Industry Jonas Alexis MEFOS AB

    2. Outline Why are MEFOS modelling Metallurgical processes What is applied CFD at MEFOS Example: Sulphur Refining of Steel Transport description Reaction model Reaction Zone Scalar equation model Empirical model Validation Transport Equation Sulphur refining Conclusions

    3. Why are MEFOS modelling metallurgical processes? The goal for the metallurgical industry is to achieve the material properties needed for production of a given product. This requires control of the amount of: Alloying elements (C, Si, Mn, Cr, Al ..) Other elements (S, N, H, P, Cu, Zn ..) Unwanted non-metallic particles (Inclusions). Also composition and size distribution Continuous measurement and sampling for process control is difficult in most process steps. The models are therefore needed for: Optimisation of the different process steps Development of process control systems Enhanced understanding Education

    4. What is applied CFD at MEFOS When fundamental models are missing or impossible to realize because of the lack of data, which is often the case, other methods need to be utilised. One example: Fundamental data needed to describe the slag/metal-interface in a stirred ladle during sulphur refining is missing. Instead, empirical models of that interface, based on sampling at the steel plant can be used. The use is necessary if sulphur-refining in a production ladle is to be simulated.

    5. Sulphur Refining Transport description (Gas Stirring)

    6. Sulphur Refining Transport description (Gas Stirring)

    7. Sulphur Refining Reaction Model

    8. Sulphur Refining Reaction Model

    9. Reaction Zone Scalar Equation model

    10. Reaction Zone Sampling (Empirical model)

    11. Reaction Zone Sampling (Empirical model)

    12. Reaction Zone Empirical Model

    13. Reaction Zone Empirical Model

    14. Sulphur Refining and Reoxidation Model

    15. Validation Transport description

    16. Validation Wave Height Model

    17. Validation Validation of Wave Height Model

    18. Validation Transport Description

    19. Validation Transport Description

    20. Validation Transport Description

    21. Validation Sulphur Refining and Reoxidation

    22. Validation Sulphur Refining and Reoxidation

    23. Conclusions For a Qualitative description (Parametric studies) a simpler reaction zone model can be used. For a Quantitative description of Sulphur refining, the development of empirical models describing the reaction zone in a steel ladle must be utilised due to the lack of data prohibiting development of a fundamental model.

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