Jet-type axial pulverizer
OwnerNorwood H. Andrewsinventor
Life of this patent
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Abstract
A jet-type grinding mill having a circular chamber wherein a rotating vortex is formed by gaseous fluid injected into the chamber, the material to be ground being fed into the mill through a feed means at the center of the vortex, there being a central recess at the bottom of the chamber below the feed inlet which has upwardly inclined walls to direct the fed particles upwardly and outwardly into the vortex.
Claims8
A grinding and classifying mill comprising a generally circular chamber defined by an upper wall, a lower wall, and a peripheral wall, said peripheral wall having a plurality of gaseous fluid nozzles arranged to propel gaseous fluid in both a forward and a transverse direction relative to the axis of said chamber to form a fluid vortex in said chamber, said nozzles being connected to a source of gaseous fluid under pressure, a generally conical recess in the central portion of said lower wall, a feed inlet means in the axial plane of said chamber, said feed inlet means having its outlet end aligned with the apex end of said recess, said feed inlet means being coaxial with an exhaust means leading from the central area of said chamber.
Dependencies are inferred from the claim text.