Scrap treatment

Details Scrap treatment Scrap treatment

1976-08-02

1977-11-01

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Processes

With heating or cooling of material

241DIG37, 241DIG38, 62 52, 62 54, B02C 2306

Patent

active

040562310

ABSTRACT:
A process for treating metal scrap includes cooling the scrap until it is brittle by contacting it with a first cooling agent which is gaseous and then fragmenting the scrap, said first cooling agent being cooled by being passed through a heat exchanger to which a second cooling agent is fed partly in the liquid phase and partly in the gaseous phase and from which the second cooling agent emerges in the gaseous phase, said second cooling agent being supplied to the heat exchanger partly from a liquid storage facility and partly directly from a refrigeration plant, the refrigeration plant being used in conjunction with a liquifier to supply the storage facility with liquid second cooling agent.

REFERENCES:
patent: 3058315 (1962-10-01), Schuftan
patent: 3319434 (1967-05-01), Matesanz
patent: 3661542 (1972-05-01), Collins
patent: 3666185 (1972-05-01), Williams
patent: 3760597 (1973-09-01), Becker
patent: 3804339 (1974-04-01), Laws et al.
patent: 3818976 (1974-06-01), Ledergerber

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