The paper describes the use of physical modelling to study the degassing of aluminum melts in the refining ladle by inert gas blowing. The technology of blowing inert gas into the ladle through a rotating impeller is the most common method in operating conditions to reduce the unwanted phases content in molten aluminum, e.g. hydrogen. The high efficiency of this process is related to the creation of fine bubbles with a high interphase surface, their equal distribution into the whole volume of the refining ladle and with relatively long period of its effect in the melt. The presented paper is focused on the evaluation of laboratory experiments obtained using the physical modelling method; special attention is focused on the assessment of relevant parameters for the degassing process – flow rate of inert gas, rotary impeller speeds and impeller variant.Keywords: Physical modelling, refining ladle, inert gas blowing, degassing of the melt, impeller
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