Beneficiation of iron ores by froth flotation
US4132635A · kind A · utility
5Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Jan 13, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Iron oxides of finely-ground, low grade, siliceous oxidized iron ores can be effectively floated from the silica-bearing gangue in the presence of slime by conditioning an aqueous pulp of the ore with a reagent formed by incorporating a water-soluble polyvalent metal salt into an aqueous solution of an alkali metal silicate prior to subjecting the pulp to froth flotation in the presence of an anionic type collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.