Patent ID: 8840862

Claim:
A method for producing a carbonaceous material for an electrode of a secondary battery using an apparatus for continuous high temperature gas treatment of particulate matter, the method comprising: supplying pre-fired carbon as a starting particulate matter from an upper part of the apparatus to flow the starting particulate matter downwardly; supplying a gas including a nitrogen gas and/or a chlorine gas as a treating gas to a lower part of the apparatus to flow the treating gas upwardly; forming a moving bed including the particulate matter and the treating gas by adjusting a feed rate of the treating gas to be less than a minimum fluidization rate of the particulate matter; heating an upper part of the moving bed to a temperature of 500° C. to 3000° C., to form a fluidized bed that is continuous with an upper part of the moving bed; treating the particulate matter with a residence time of 0.1 to 10 hours; and cooling the particulate matter in the lower part of the apparatus.