Patent ID: 7364101
Filing Date: 2008-04-29
Classification: B02C,G03G

Abstract:
1. A pulverizing apparatus comprising: plural air nozzles; a chamber configured to pulverize particles by compressed air jetted from the plural air nozzles; a rotor set in an upper part of the crushing chamber, configured to classify particles that flow into the rotor from the chamber into fine particles and raw particles by centrifugal force, wherein the rotor comprises plural blades set to each have a width of 1/50- 2/25 of a diameter of the rotor, wherein a length of each of the plural blades of the rotor is 1/25- 3/50 of the diameter of the rotor, wherein each of the plural blades forms a gap with a neighboring of the plural blades set to 1/25- 3/25 of the diameter of the rotor, and wherein each of the plural blades has an angle of 0-30 degrees against a rotating direction of the rotor.