THE KINETIC EXTRUDER:A DRY PULVERIZED SOLID MATERIAL PUMP

摘要

Method and apparatus are shown for the continuous feeding of pulverized material to a high pressure container. A rotor (1) is located within the high pressure container (2). The pulverized material is fed from a feed hopper (4) through a stationary feed pipe (3) to a vented spin-up chamber (8) to a plurality of two-stage sprues (9) mounted in the rotor. Control orifices (17) downstream from the sprues meter the flow of coal through the sprues. Previous feeders tried to keep the material in a fluidized state and avoid a compacted plug form of flow. The prevent feeder makes use of compacted plug formations in the sprues as seals against high pressure gas.