Flotation beneficiation process for non-sulfide minerals
US4720339A · kind A · utility
25Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1985 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Mar 15, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method of separating non-sulfide value minerals from non-sulfide ores is disclosed. The improved method includes the step of adding a depressant selective for siliceous gangue minerals and materials to a flotation slurry previously conditioned with an anionic collector. In preferred embodiments, the depressants comprise copolymers or terpolymers derived from acrylamide units and N-acrylamidoglycolic acid units. The method provides generally improved recoveries of non-sulfide value minerals at higher grade, in a reduced number of flotation steps and at reduced consumption levels of flotation reagents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.