Recovery of unoxidized metals from organic insulated metallic sc

Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...

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29403, 75 44S, 134 10, 134 19, 209 11, 266205, 432 72, B01D 500

Patent

active

040918254

ABSTRACT:
Metallic scrap containing a coating of organic insulation material is processed to recover a clean, unoxidized metallic substrate and various insulation by-products by thermally decomposing the organic insulation under pressure in a closed, externally heated vessel. Volatile decomposition products are periodically vented to a vapor recovery system and non-volatile decomposition products, primarily carbonaceous char adhering to the clean scrap, are separated by mechanical action such as vibration or tumbling. Apparatus for performing this process is also disclosed.

REFERENCES:
patent: 1869844 (1932-08-01), Derr
patent: 2704707 (1955-03-01), Lemeshka
patent: 3034774 (1962-05-01), Broomhead et al.
patent: 3448509 (1969-06-01), O'Reilly
patent: 3650830 (1972-03-01), Mathis
patent: 3749322 (1973-07-01), Reynolds

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