Patent ID: 9067212
Filing Date: 2015-06-30
Classification: B02C

Abstract:
1. A mill, comprising: a grinding chamber; a rotating shaft located in the grinding chamber, the rotating shaft comprising a central axis; a rotating body structured to have a disk-shaped rotary member fixed to the rotating shaft; a casing provided to form an outer shell of the grinding chamber; and a cylindrical frame member having an inner peripheral surface formed in a corrugated shape along a circumferential direction of the inner peripheral surface; wherein: the cylindrical frame member is arranged coaxially with the rotating shaft in the casing; the corrugated shape comprises a plurality of corrugation crests and a plurality of corrugation troughs; a pitch of the corrugated shape is greater than an amplitude of the corrugated shape, wherein the pitch is an interval between two adjacent corrugation crests, and the amplitude is a difference between a distance from the corrugation crests to the central axis and a distance from the corrugation troughs to the central axis; the disk-shaped rotary member has a circular member; and when in use, a solid-gas two-phase flow being a flow of a mixture of particles and a gas is introduced through a gap between the casing and the rotating body into the grinding chamber, then is circled in the grinding chamber while being accelerated by the rotating body, and collides against the inner peripheral surface and the circular member to grind or pulverize the particles.