The temperature field and flow field of molten aluminum alloys during degassing and purification process by rotary impeller have been simulated by a computational model. The results indicate that a special pipeline fixed into the rotate pole can remarkably decrease the temperature in the rotate pole and prevent the spinning rotor from jamming resulting from spray flux softening at high temperature. The rotate speed and the flux have the important effects on the degassing and purification of molten aluminum alloys

so appropriate parameters should be considered according to the actual situation. With square furnace

the gas got out in the vertical section along shaft on the cross

while the volume fraction of the gas can be decreased remarkably in vertical section along shaft

even exhibiting hydrogen inhalation.