Method and apparatus for heat treating materials to remove...

Details Method and apparatus for heat treating materials to remove... Method and apparatus for heat treating materials to remove...

F - Mech Eng,Light,Heat,Weapons

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B

39/21

F27B 7/06 (2006.01) C22B 1/00 (2006.01) F27B 7/08 (2006.01) F27B 7/34 (2006.01)

Patent

CA 1137303

METHOD AND APPARATUS FOR HEAT TREATING MATERIALS TO REMOVE CONTAMINANTS Abstract of the Disclosure A method and apparatus for heat treating metals to remove contaminants. Contaminated scrap metal is fed into one end of a rotating inclined retort. Heat is applied to the retort as the scrap metal is conveyed therein to remove the contaminant, and the processed metal is discharged from the opposite end of the retort. Combustible waste gases gener- ated through the processing are fed to an afterburner where the combustible gases are burned and are discharged from the afterburner into a stack. A portion of the hot combusted gases are returned from the stack to the discharge end of the retort to thereby minimize oxidation of the scrap metal being treated as well as conserving fuel. -0-

328582

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