Process for the treatment of contaminated metal residues and...

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal

Reexamination Certificate

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C075S751000, C075S961000, C075S962000

Reexamination Certificate

active

07951221

ABSTRACT:
Disclosed is a process and apparatus for the treatment of divided metal residues contaminated by one or more organic compounds, including mixing, inside a chamber, of metal residues with at least one calcium/magnesium compound capable of reacting exothermically with water; exothermic reaction of the at least one calcium/magnesium compound with the water that the metal residues contain; rise in temperature of the metal residues subject to an exothermic reaction; dehydration of the metal residues during this exothermic reaction; oxidation of the organic compounds during the mixing, by bringing the metal residues contaminated by one or more organic compounds mixed with the at least one calcium/magnesium compound into contact with a gas stream containing at least partly oxygen; and removal from the chamber of a handleable dehydrated treated product having a residual content of organic compounds of less than 1% by weight of the treated product.

REFERENCES:
patent: 4326883 (1982-04-01), Schwarz
patent: 4528029 (1985-07-01), Goksel
patent: 2005/0256359 (2005-11-01), Bolsing
patent: 1645645 (2006-04-01), None
patent: 2000192155 (2000-07-01), None
patent: 2000237512 (2000-09-01), None
patent: 9909224 (1999-02-01), None
patent: 0017404 (2000-03-01), None
patent: 0066796 (2000-05-01), None
International Search Report PCT/EP2007/060148; Dated Jan. 2, 2008.

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