Method and calcining furnace for electric calcining of...

F - Mech Eng,Light,Heat,Weapons – 27 – D

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F27D 11/04 (2006.01) B01J 6/00 (2006.01) B01J 8/08 (2006.01) B01J 8/12 (2006.01) C01B 31/04 (2006.01) C10B 33/00 (2006.01) F27B 1/21 (2006.01) F27B 9/14 (2006.01) H05B 3/00 (2006.01) F27D 99/00 (2010.01)

Patent

CA 2285961

The present invention relates to a method and a furnace for electric calcining of carbonaceous material for the production of graphite or graphite-containing material. Carbonaceous materials supplied to the top of a vertically arranged furnace having a cylindrical cross section. The furnace is equipped with one top electrode and one bottom electrode and has means for supplying electric current to the electrodes for heating of the carbonaceous material. The calcined carbonaceous material is discharged at the bottom of the furnace in one stream containing material calcined in the center of the furnace and one stream containing material calcined near the periphery of the furnace.

La présente invention concerne un procédé et un four de calcination électrique d'une matière charbonneuse, aux fins de production de graphite ou de matière contenant du graphite. Les matières charbonneuses sont fournies au niveau du sommet d'un four disposé verticalement et présentant une section cylindrique. Ce four est pourvu d'une électrode, au niveau de son sommet, et d'une électrode, au niveau de sa base, et il possède des moyens d'alimentation en courant électrique des électrodes, aux fins de chauffage de la matière charbonneuse. Cette matière charbonneuse est déchargée au niveau de la base du four, en un écoulement contenant une matière calcinée dans le centre du four et en un écoulement contenant une matière calcinée à proximité de la périphérie du four.

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