Method of withdrawing particulate material from dead-bed of centrifugal crusher and centrifugal crusher suitable for carrying the method into practice

摘要

In a centrifugal crusher including a rotor (2, 11) rotating at high speed for receiving a supply of material to be crushed, and a crushing chamber (3,12) enclosing the rotor, the material is thrown out of the rotor in a tangential direction by centrifugal forces into collision with a dead-bed (4,13) constituted by particulate material stacked in a heap in the crushing chamber after being produced by crushing the material. The particulate material brought into collision with the dead-bed is allowed to stay in the crushing chamber for a period of time long enough to serve as a dead-bed for crushing the particulate material into particles of a desired particle size, before being discharged continuously or periodically from the crushing chamber.