| 摘要 |
<p>According to the present invention, particle diameter of a raw material to be pulverized can be made small within a short period of time. Provided by the invention is a vibration mill which is provided with: a container (1) having therein a columnar space with a central axis of the columnar space being disposed so as to be almost horizontal while the container being held so as to be vibratable in a direction of within a plane that is almost perpendicular to the central axis, a cylindrical medium (2) disposed in the container (1) so as to be vibratable, and a plurality of pulverizing media (3a, 3b) disposed inside the cylindrical medium (2) so as to be vibratable. The ratio of an inner diameter of the cylindrical medium (2) in contacted with the pulverizing medium (3 a, 3b) to an outer diameter of the pulverizing medium (3 a, 3b) (inner diameter of the cylindrical medium (2) in contacted with the pulverizing medium (3a, 3b)/outer diameter of the pulverizing medium (3a, 3b)) is 2.1 or more, and the integrated value of volumes of the pulverizing media (3 a, 3b) relative to a space volume inside the cylindrical medium (2) in contacted with the pulverizing medium (3a, 3b) is more than 25%.</p> |
