Fluid dynamics simulation of chromium recovery from AOD slags during reduction with ferrosilicon additions
| Autor: | R. I. L. Guthrie, M. Isac, Z.-H. Lin |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Materials science
Argon Mechanical Engineering Alloy Metallurgy Metals and Alloys Mixing (process engineering) Slag chemistry.chemical_element engineering.material Chromium Ferrosilicon chemistry Mechanics of Materials visual_art Materials Chemistry visual_art.visual_art_medium engineering Particle Dissolution |
| Zdroj: | Ironmaking & Steelmaking. 32:133-140 |
| ISSN: | 1743-2812 0301-9233 |
| DOI: | 10.1179/174328105x15878 |
| Popis: | The kinetic and thermodynamic efficiencies of chromium recovery from the slag in an AOD process during the slag deoxidation period with ferrosilicon is a complex process affected by slag basicity, temperature, the dissolution kinetics of the reducing agents, and intermixing of the slag/metal/alloy addition phases within the vessel. The present work focused on a study and simulation of the fluid dynamics and mixing behavior of ferrosilicon additions in the AOD process for the production of stainless steel. In order to visualise the mixing behaviour, a two dimensional slice model of an AOD vessel was first built and filled with ZnCl2 solution and then covered with silicone oil in order to represent the bulk liquid steel and slag phases respectively. The injection of argon/oxygen process gases was simulated using air or helium. Particle trajectories and intermixing of the phases was monitored with a high speed camera. To simulate the 75FeSi additions, wooden spheres were used. A three-dimensional ver... |
| Databáze: | OpenAIRE |
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