Method for producing small granules
US7207505B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Sep 16, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.