Thermal reclamation method for the recovery of metals from air b

Details Thermal reclamation method for the recovery of metals from air b Thermal reclamation method for the recovery of metals from air b

1993-07-27

1994-03-15

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75403, 75581, 75687, C21B 1314

Patent

active

052942449

ABSTRACT:
A method of recovering an aluminum alloy and a stainless steel alloy from an air bag inflator 10 that has aluminum alloy parts, including an aluminum alloy housing 12 and non-aluminum alloy parts, including a non-aluminum gas filter 18. The non-aluminum parts have a higher melting temperature than the aluminum alloy parts of the air bag inflator 10. The method comprises heating the air bag inflator 10 in the range of the melting temperature of aluminum and then recovering the aluminum alloy which is not contaminated with the material of the higher melting temperature parts. After the aluminum alloy has melted from the air bag inflator 10, the non-aluminum parts are heated to a higher temperature to melt any stainless steel alloy from the non-aluminum parts. The stainless steel alloy is recovered as a high purity stainless steel alloy end product.

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patent: 3556500 (1971-01-01), Fritz et al.
patent: 3615357 (1971-10-01), Walmer
patent: 3762911 (1973-10-01), von der Crone et al.
patent: 3984090 (1976-10-01), Swartz
patent: 4203762 (1980-05-01), Dansereau
patent: 4457494 (1984-07-01), Fisher
patent: 4846368 (1989-07-01), Goetz

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