Scrap metal recovery process

Details Scrap metal recovery process Scrap metal recovery process

1982-05-28

1983-07-19

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 68R, C22B 2100

Patent

active

043941664

ABSTRACT:
A method for recycling aluminum scrap containing thermal barrier material comprising the steps of comminuting the scrap to short pieces of a predetermined length, conveying the comminuted aluminum scrap to a storage hopper, continuously feeding comminuted aluminum scrap product to an indirect-fired rotary kiln, heating the scrap to a predetermined temperature for a sufficient amount of time to reduce the thermal barrier material in the scrap to combustible gas and cinder and produce a satisfactory aluminum melt furnace feed product, collecting and burning the combustible gases and vapors in a waste heat recovery afterburner to provide sufficient heating values for the scrap heating step, and then feeding the treated scrap to an aluminum melt furnace for melting and further processing.

REFERENCES:
patent: 2302981 (1942-11-01), Stern
patent: 3650830 (1972-03-01), Mathias
patent: 4010935 (1977-03-01), Stephens
patent: 4264060 (1981-04-01), Twyman

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