C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 7/00 (2006.01) C05D 9/00 (2006.01) C22B 9/05 (2006.01) C22B 21/00 (2006.01) C22B 21/06 (2006.01) F27B 7/20 (2006.01) F27D 3/00 (2006.01) F27D 7/02 (2006.01) F27D 19/00 (2006.01) F27B 7/24 (2006.01)
Patent
CA 2116249
A process and apparatus are disclosed for recovering a non-ferrous metal, preferably aluminum and aluminum alloys, in molten coherent form from a charge of material to be processed containing the metal. The charge is introduced into a sealable furnace which is then sealed. The charge is agitated. A control parameter indicative of conditions inside said furnace is monitored and compared to a pre-determined first condition for the parameter. A heat source is operated to heat the charge until the control parameter reaches the first condition. The operation of the heat source is then stopped. A controlled amount of oxidizing agent and an inert carrier is then introduced into the furnace. The control parameter is monitored and compared to a predetermined second condition for the parameter. The flow of the oxidizing agent and the carrier is controlled to maintain the control parameter at about the second condition. The molten metal is subsequently removed from the furnace.
Dennison Associates
Spoel Han
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