Zinc-ammonium phosphate fertilizers
US6322607A · kind A · utility
14Cited by
4References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Jul 19, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05B7/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process of obtaining a co-granulate of zinc and ammonium phosphate having a N/P ratio of 0.6-1.9 which includes initially feeding ammonium phosphate in finely divided form with a zinc source such as zinc oxide or zinc sulphate into a granulator wherein ammonia may also be fed into the granulator to increase the N/P ratio. The co-granulate is then obtained after drying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.