Phosphate flotation
US4377472A · kind A · utility
5Cited by
11References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1978 |
| Grant date | Mar 22, 1983 |
| Priority date | — |
| Expiry date | Nov 1, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Use of reverse flotation for phosphate rock ore treatment, wherein starch is added first to depress phosphate rock particles, followed by addition of cationic reagent, e.g., amine to float the silica. Phosphate rock is recovered as sink concentrate and silica is recovered as float tailings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.