Process for granule production
US6361720B1 · kind B1 · utility
7Cited by
22References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1999 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Dec 28, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B2009/163
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
I have developed 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.