Phosphate ore recovery
US4069144A · kind A · utility
2Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1975 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Nov 19, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is an improvement in the process of benificiating phosphate ores, the process including at least one acid flotation and at least one amine flotation. The improvement is a reduction in the formation of slimes, obtained by drying the phosphate ore prior to classification and flotation or by transporting it to the flotation plant out of contact with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.