Patent ID: 9511374
Filing Date: 2016-12-06
CPC Classification: B02C

Claim Text:
1. A horizontal dry mill comprising: a grinding tank having a tubular grinding chamber, and a tubular raw material supply section continuously connecting to the grinding chamber to supply a raw material as a dry-pulverized material to the grinding chamber; a raw material input section provided at one end of the grinding tank; a raw material discharge section provided at the other end of the grinding tank via a media separation member; grinding media set in the grinding chamber; a horizontal, rotational driving shaft extending in the raw material supply section and the grinding chamber of the grinding tank; a raw material supply member disposed in the raw material supply section and attached to the horizontal, rotational driving shaft, wherein the raw material supply member is configured to supply the raw material input into the raw material supply section from the raw material input section, to the grinding chamber, while being rotationally driven by the horizontal, rotational driving shaft; and an agitation member disposed in the grinding chamber and attached to the horizontal, rotational driving shaft, wherein the agitation member is configured to agitate the raw material supplied from the raw material supply section, while being rotationally driven by the horizontal, rotational driving shaft, the horizontal dry mill is characterized in that the raw material supply member is a mechanical thrust generating device which is a screw configured to be rotated to thereby give, to the raw material input from the raw material input section, thrust toward the grinding chamber, wherein: a diameter of the raw material supply section is set to be less than a diameter of the grinding chamber; a diameter of the screw is set to a small value according to the diameter of the raw material supply section; and a gap between an outer diameter of the screw and an inner diameter of the grinding tank in the material supply section is between 0.5 mm and ⅓ of a diameter of each of the grinding media so as to prevent the grinding media from being clogged between the radially outer end of the screw and the inner wall of the grinding tank, and from intruding into the raw material supply section.