Targeting the single tuyere and double tuyere methods of argon blowing for Baosteel's 300 t ladle furnace, the 3D continuity equation,the N-S equation and the turbulent k-εdouble-equation were used to model the form of the molten steel flow and the dead areas under six different argon blowing conditions.The different flow field forms and the degree of mixing under different argon blowing methods were compared.The results demonstrate that when large ladles are operated via different methods of argon blowing,the spray from the centre of a single tuyere forms a symmetrical vortex,while when a double tuyere sprays,there is basically no clear vortex.In regards to the amount of argon blowing that will produce the best blend of molten steel,the amount of dead area reduction will not be clearly noticeable if there is an excessive argon blowing amount.
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