Patent ID: 8550389
Filing Date: 2013-10-08
Classification: B02C

Abstract:
1. An apparatus for pulverizing material, said apparatus comprising: a housing defining a grinding chamber; an inlet conduit for feeding the material into the grinding chamber; an outlet conduit for directing pulverized material from the grinding chamber; a plurality of hammer disks axially spaced along a shaft, wherein the hammer disks are disposed within the grinding chamber; a plurality of rows of at least one hammer, each of the plurality of rows being defined by an adjacent pair of the hammer disks, the at least one hammer being attached to and between the adjacent pair of the hammer disks, and each of the plurality of rows defining a wear susceptibility parameter, at least one of the wear susceptibility parameters of one of the plurality of rows being different from another wear susceptibility parameter of another of the plurality of rows; and each of the plurality of rows being selectively positioned in the housing according to the wear susceptibility parameters, such that a wear rate of each of the hammers is substantially equal for all the hammers.