Method for manufacturing an ammonium phosphate fertilizer having low cadmium content
US10947164B2 · kind B2 · utility
0Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2016 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Nov 24, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05B19/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for manufacturing an ammonium phosphate fertilizer from a phosphoric acid aqueous solution that has less than 50% P2O5 concentration and is obtained by wet phosphate ore treatment, said phosphoric acid containing traces of cadmium, comprising the following steps:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.