Patent ID: 10814333

Abstract:
Provided is a pulverizing apparatus (100) including a pulverization chamber (110) provided with a plurality of stationary blades (111) on an inner peripheral surface, a rotary shaft (120) rotatably supported by the pulverization chamber (110), a plurality of rotary plates (130) fixed to the rotary shaft (120) and separated with intervals in the horizontal direction, and having a plurality of a rotary blades (131) on an outer peripheral surface, tip ends of the rotary blades (131) having space of 0.3 to 0.5 mm between tip ends of the stationary blades (111), a paper powder feed port (140) to which paper powder is fed, a rotation driving unit (150) which rotates the rotary shaft (120) so that a peripheral speed of the tip ends of the rotary blades (131) is 19 to 30 m/sec, and a screen (160) arranged inside the pulverization chamber (110) having mesh openings of 130 to 400 μm.