DRUM GRANULATOR Russian patent published in 1997 - IPC

FIELD: processing fertilizers. SUBSTANCE: drum granulator has major drum with transporting nozzle made up as several rows of distributing vanes on the inner side and pressure vanes mounted at the inlet and outlet ends, additional outer drum, between which a reverse screw is interposed that rotates together with the drums, chamber for charging and discharging a product, nozzle, and charging tube. The charging chamber consist of movable and fixed portions. The movable portion of the chamber is made up as three sections that rotate together with the drums and are connected with each other, section for receiving fine fraction, section for supplying fresh material and simultaneous returning the fine fraction provided with guides, and section for supplying fresh material provided with transporting blades radially arranged inside it. The discharging chamber is arranged at the outlet end of the additional drum. The major drum is provided with classifier and cleaner. The charging pipe is mounted in the fixed portion of the chamber. EFFECT: improved design. 2 dwg