A method for the production of irregular shape russian gas maes strength

摘要

PICT:0437647/III/1 In the production from loose carbon black of granules or agglomerates, which can be more readily handled, have a greater density than the untreated material, have no tough outer coating and can be incorporated with rubber, oils, waxes, &c. without additional difficulty, the carbon black is first moistened with a temporary liquid binder, e.g. alcohol, benzol, gasoline, methanol, acetone or water, and formed into a stiff paste, in a mixing machine, the paste being then granulated and dried. Carbon black from a conveyer A is moistered with water by sprayers D and formed into a friable, relatively dry paste by agitating propellors C. From the mixer B, the paste is fed between rollers E, F driven at slightly different speeds so that one becomes coated with a layer G of paste the thickness of which is adjusted by a screw H. Formation of the granules is effected by a rapidly rotating roller I provided with spikes J which remove the carbon black from the roller F in small pieces passing by way of a shoot L into a rotary drier M heated to 400 to 500 DEG F. In a modification, the paste is fed into the interior of a rotary perforated drum through which it is forced by flexible strips carried on rotating arms, the granules being formed by removing the material from the exterior by a scraper.