Process for granule production
US6436164B1 · kind B1 · utility
4Cited by
15References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Sep 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B2009/163
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An agglomeration process by which granules are formed by the steps of:(a) injecting polymer having sufficient viscoelasticity; and(b) impacting particles on the polymer at the injection point.The present invention is advantageous because it overcomes the problems of previous granulation process and subsequent art processes by having a very low recycle rate and allowing for control of granule size. It is particularly useful for fertilizer granule formation using a ureaform polymer and particles comprised of ammonium sulfate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.