Patent · US Expired

Apparatus and method for producing pellets by layering power onto particles

US5132142A · kind A · utility

92Cited by

8References

18Claims

0Family size

Assignee

Glatt GmbH · DE

Inventors

David Michael Jones · Gloucester, GB
Peter F. F. Hirschfeld · Freiburg im Breisgau, DE
Reinhard Nowak · Binzen, DE

Key dates

Filing date	Mar 19, 1991
Grant date	Jul 21, 1992
Priority date	—
Expiry date	Mar 19, 2011

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2/16
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An apparatus for layering powder onto particles has a vessel in which a rotor is mounted rotatable therein around a vertical axis. The rotor is a disc with a supporting surface for supporting particles. The apparatus also has a feeder with a substantially horizontal introducing member protruding slightly into the vessel above the disc. The introducing member limits a liquid outlet and an annular powder outlet encompassing the liquid outlet. During a layering operation, the introducing member protrudes into a bed of particles lying on the rotating disc and moved by the latter. There can then be sprayed liquid and powder simultaneously onto the particles passing in proximity of the outlets. This enables layering powder onto particles to produce thereby pellets having sizes lying in a narrow range.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.