Method for producing small granules

Details Method for producing small granules Method for producing small granules

2007-04-24

2007-04-24

Larson, Lowell A. (Department: 3725)

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

C241S017000

Reexamination Certificate

active

10860937

ABSTRACT:
A method for quickly forming a high value powdered feed materials, particularly pharmaceuticals, into small, durable granules using known elements of process equipment, comprising the steps of mixing the feed materials with a wetting solution in a high shear mixer or granulator, partially drying the granulated mixture in a first drying means to a state of intermediate dryness, milling the partially dried granulated product in a stream of air to create small partially dried granules of the desired physical size, and drying the product in the second drying means to the desired final Loss On Drying (LOD) percentage of wetting solution. The milled product may be conveyed by vacuum from the milling step to the second drying means through a relatively long cylindrical transfer hose to create uniformly rounded granules.

REFERENCES:
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patent: 5618527 (1997-04-01), Mendes et al.
patent: 5780055 (1998-07-01), Habib et al.
patent: 6039275 (2000-03-01), Slangen et al.
patent: 6270708 (2001-08-01), Gurol
patent: 6440965 (2002-08-01), Kelley et al.
patent: 6635278 (2003-10-01), Dahl et al.
patent: 6845793 (2005-01-01), Ruffer et al.

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