Apparatus for recovery of non-ferrous metals from scrap and dros

Metallurgical apparatus – With control means responsive to sensed condition – With temperature sensor

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266207, 266213, 266244, C21D 1100

Patent

active

056884702

ABSTRACT:
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.

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patent: 4959100 (1990-09-01), Dube et al.
patent: 4960460 (1990-10-01), Dube et al.
patent: 4997476 (1991-03-01), Lindsay et al.
patent: 5030273 (1991-07-01), Lindsay et al.
patent: 5421850 (1995-06-01), Dube et al.

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