Production of macrospherical particles

Details Production of macrospherical particles Production of macrospherical particles

1982-06-15

1984-02-07

Garris, Bradley

Concentrating evaporators

Spray type

Gaseous current

159 481, 239223, B01D 118, B01D 120, B05B 134, B05B 310

Patent

active

044301553

ABSTRACT:
A process and improved apparatus are provided for producing macrospherical particles. The particles themselves have increased wall thicknesses and higher densities than particles produced by conventional means and are thus not subject to deep lung penetration. The produced particles are also of controlled (narrow) particle size distribution. Such particles are particularly well adapted for use as anti-perspirants. The process for producing the particles comprises providing a solution containing the materials from which the particles are made, dispersing the solution along a plurality of radially disposed bristles by centrifugal force into discrete liquid droplets and drying the solution droplets in a stream of heated air. The improved apparatus comprises mounting a rotatable atomizer having a plurality of bristles inside a spray drying chamber.

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Marshall, Jr., W. R., "Automization and Spray Drying," Chemical Engineering Progress Monograph Series, No. 2, vol. 50, 1954.

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