Aluminum scrap melting

Details Aluminum scrap melting Aluminum scrap melting

C - Chemistry, Metallurgy

22

B

53/246

C22B 21/04 (2006.01) C22B 7/00 (2006.01) C22B 21/00 (2006.01) C22B 21/06 (2006.01)

Patent

CA 2036076

Abstract Disclosed is a method of melting aluminum scrap and removing skim therefrom having reduced amounts of aluminum contained therein. Melted scrap and salt is added to a body of molten aluminum in a skim removal bay and a layer containing salt and skim is collected on the surface of the body, the layer containing high levels of molten aluminum in lower regions of said layer. The layer is treated so that upper regions thereof contain reduced amounts of aluminum, the treating aiding molten aluminum in the layer to return to the body. A portion of the treated layer is removed from upper regions thereof, the portion comprised of salt, skim and aluminum. 24

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