Solid material comminution or disintegration – Processes – With application of fluid or lubricant material
Patent
1995-04-17
1997-12-09
Husar, John M.
Solid material comminution or disintegration
Processes
With application of fluid or lubricant material
241 2431, 241 48, 241 52, 241 56, 241 791, 241162, B02C 1912, B02C 2324
Patent
active
056951302
ABSTRACT:
A method and apparatus for the dry grinding of solids, comprises initial coarse grinding of the solids in a controlled vortexing of a fluidized bed and directing the solid fine particles generally upwardly into a vortex grinding zone and grinding the upwardly directed solid particles in the vortex grinding zone by passing a portion of the particles through the vortex grinding zone. The vortex grinding zone comprises at least one successively vertically disposed grinding stage comprising passing particles upwardly through at least one horizontal vortex zone of an annular gap, defined by a stationary plate with a circular aperture, hereafter cleaning up the upward moving product mix by eliminating coarser particles by gravity separation with a centrifugal expelling fan and subjecting the remaining part of the upwardly particles to the vertical vortexing of a rotating semipermeable means, defined by a rotating assembly containing a broad mesh screen therein.
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Husar John M.
Sokolski Edward A.
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