Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Reexamination Certificate
2011-05-31
2011-05-31
Wyszomierski, George (Department: 1733)
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
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.
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International Search Report PCT/EP2007/060148; Dated Jan. 2, 2008.
Laudet Alain
Pelletier Marc
Piezanowski Ludivine
Roth Jean-Luc
Cantor & Colburn LLP
McGuthry-Banks Tima M
Paul Wurth S.A.
Wyszomierski George
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