JET MILL Russian patent published in 1995 - IPC

FIELD: manufacture of building materials. SUBSTANCE: in the jet mill the speeding up tubes are made as sections connected in series and consisting of diffuser 6, a throat and converging tube 5. In this case the converging tube of the previous section is connected with the diffuser of the consequent one through cylindrical member 4 whose diameter is equal to the outer diameter of the converging tube and the diffuser. The end of the speeding up tube is made as a throat placed in the diffuser. EFFECT: enhanced efficiency of grinding loose materials. 1 dwg