Abstract: A granular conductive carbon black and a preparation method thereof, belonging to the technical field of conductive carbon blacks. The method for preparing a granular conductive carbon black includes making a raw material of the conductive carbon black undergo moistening with water of a temperature of 80° C. or higher, performing wet granulation and drying in sequence. The raw material of the conductive carbon black is infiltrated by the water of a temperature of 80° C. or higher, so that the hydrophilic property of the raw material of the conductive carbon black is enhanced, the water of a temperature of 80° C. or higher enters the microporous structures of the raw material of the conductive carbon black, then a good moistening effect is achieved, and further the granular conductive acetylene carbon black with uniform particle size distribution is prepared through wet granulation and drying.

Abstract: Disclosed are a production method for efficiently controlling a specific surface area of conductive carbon black, and a material delivering device. The production method for efficiently controlling a specific surface area of conductive carbon black includes making acetylene mixed with a hydrocarbon raw material undergo a pyrolysis reaction at 1300 to 1500° C., wherein the hydrocarbon raw material includes one, or a combination of more than one, of hydrocarbon compounds. When acetylene is introduced to undergo a pyrolysis reaction at 1800° C., conductive carbon black is obtained with a specific surface area of generally 80 m2/g or more. When acetylene is mixed with a hydrocarbon raw material so that the temperature of the pyrolysis reaction is reduced to 1300 to 1500° C., conductive carbon black is obtained with a specific surface area of substantially from 40 to 80 m2/g by controlling the pyrolysis temperature.