Method and apparatus are shown for control of continuous feeding of pulverized material to a high pressure container. A rotor is located within the high pressure container. The pulverized material is fed from a feed hopper through a stationary feed pipe to a vented spin-up zone chamber to a plurality...http://www.google.es/patents/US4362441?utm_source=gb-gplus-sharePatente US4362441 - Means and apparatus for throttling a dry pulverized solid material pump
Means and apparatus for throttling a dry pulverized solid material pump
