| 摘要 |
<p>The object of the invention is to solve the problem of the relatively low throughput per energy cost in the conventional jet mill. A mill 1 includes a grinding chamber 2, a rotating shaft 3 located in the grinding chamber 2, a rotating body 5 structured to have a rotary member 4 fixed to the rotating shaft 3, a casing 6 provided to form an outer shell of the grinding chamber 2, an inlet 7 arranged to supply a solid-gas two-phase flow K containing particles and a gas to the grinding chamber 2, and an outlet 8 arranged to discharge the solid-gas two-phase flow K from the grinding chamber 2. A cylindrical frame member 9 having an inner peripheral surface 9a formed in a corrugated shape is located in the casing 6. The solid-gas two-phase flow K supplied via the inlet 7 into the grinding chamber 2 is circled in the grinding chamber 2, while being accelerated by the rotating body 5. The circling solid-gas two-phase flow K collides against the inner peripheral surface 9a, so that the particles are ground or pulverized. The frame member 9 having the inner peripheral surface 9a is arranged coaxially with the rotating shaft 3 and is located adjacent to the inner peripheral surface of the casing 6. The particles colliding against the frame member 9 move at random and thereby collide with one another.</p> |
