Numerical and Experimental Study on Fluid Dynamic Features of Combined Gas and Electromagnetic Stirring in Ladle Furnace |
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| Authors: | Ulf Sand Hongliang Yang Jan‐Erik Eriksson Rebei Bel Fdhila |
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| Affiliation: | 1. ABB AB, Metallurgy, Terminalv?gen 24, SE‐721 59, V?ster?s, Sweden;2. ABB AB, Corporate Research, Forskargr?nd 8, SE‐721 78, V?ster?s, Sweden;3. School of Sustainable Society and Technology Development, HST, Box 883, 721 23 V?ster?s, Sweden |
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| Abstract: | Basic fluid dynamic features of combined electromagnetic stirring, EMS, and gas stirring (EMGAS) have been studied in the present work. A transient and turbulent multiphase numerical flow model was built. Simulations of a real size ladle furnace were conducted for 7 cases, operating with and without combined stirring and varying the argon gas inlet plug position. The results of these simulations are compared considering melt velocity, melt turbulence, melt/slag‐interface turbulence and dispersion of gas bubbles. An experimental water model was also built to simulate the effects of combined stirring. The water model was numerically simulated and visual comparison of the gas plume shape and flow pattern in the numerical and in the experimental model was also done for 3 flow situations. The results show that EMGAS has a strong flexibility regarding the flow velocity, gas plume, stirring energy, mixing time, slag layer, etc. |
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| Keywords: | ladle furnace electromagnetic stirring gas bubble slag layer |
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