Purification of molten aluminum using upper and lower impellers

Details Purification of molten aluminum using upper and lower impellers Purification of molten aluminum using upper and lower impellers

C - Chemistry, Metallurgy

22

B

C22B 21/06 (2006.01) C22B 9/10 (2006.01)

Patent

CA 2122421

Abstract of the Disclosure Process and apparatus for improving fluxing gas dispersion in treating molten aluminum by increasing the fluxing gas surface area. The process includes the use of a molten body of aluminum and a gas dispersing unit in the body of moltenaluminum, the dispersing unit having at least two, upper and lower dispersers (rotors) mounted on a shaft extending into the molten aluminum. The dispersing unit is rotated, and simultaneously with the rotating, a fluxing gas is added to the molten aluminum adjacent the lower disperser. The fluxing gas is dispersed by the lower disperser to provide finely divided bubbles and then re-dispersed with the upper disperser toeffectively increase the fluxing gas surface area in the molten body.

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