Solid material comminution or disintegration – Apparatus – With automatic control
Patent
1994-03-01
1996-06-04
Eley, Timothy V.
Solid material comminution or disintegration
Apparatus
With automatic control
241 39, 241 42, 241 57, 241 60, 2411522, 406 14, 406 30, B02C 1906, B02C 2100, B02C 2320, B02C 2338
Patent
active
055225551
ABSTRACT:
A powder dispersion system, including a powder disperser and a control unit, supplies a controlled particle stream to a particle sizing system, instrument, or other processing device. The powder disperser includes a dynamic shear dispersion assembly and may include a fluidization assembly. An impact surface for deagglomeration of particles is located within a rapid acceleration chamber of the dynamic shear dispersion assembly. The particles are accelerated from the impact surface through an annular nozzle. A feedback loop dynamically controls the dynamic shear force applied to the aerosol transport gas, which in turn places reaction forces upon the particles, within the annular nozzle. The fluidization assembly includes a primary chamber for holding a powder sample and a secondary chamber for entraining particles of the powder sample in a transport gas stream. A pulsed gas jet directed into the primary chamber disperses particles of the powder sample into the secondary chamber. Particles are transported from the secondary chamber to the dynamic shear dispersion assembly through a controlled velocity momentum tube.
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Eley Timothy V.
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