Patent ID: 7861958
Filing Date: 2011-01-04
Classification: B02C

Abstract:
1. An impact and grinding mill, comprising: a) a base portion upon which is disposed a rotor rotatably mounted in a bearing housing, said rotor having a top surface and an upwardly aligned conical surface portion coaxial with the rotational axis, b) a mill casing over said rotor and having an inner side of a top surface and within which is located a conical track assembly which surrounds said rotor to form a conical grinding path, d) said mill casing having a downwardly aligned cylindrical collar which may be axially adjusted to set a grinding gap between said rotor and said conical track assembly, e) wherein said rotor comprises a plurality of impact knives on said top surface of said rotor that are complementary with a plurality of impact knives on said inner side of said top surface of said mill casing, f) a plurality of impact knives on upwardly aligned conical surface portion of said rotor, and g) said conical track assembly provided with serrated impact surfaces wherein said serrations project as a line on a plane of the rotor axis forming a slope relative to said rotor axis.