US3923647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Froth flotation method for recovery of minerals
Assignee: Individual
•
Filing: 1973-11-06
•
Granted: 1975-12-02
•
Expires: 1993-11-06
Abstract
Abstract An improved method in concentration of oxidic ores by froth flotation process which comprises subjecting an oxidic ore of a metal which in its highest valency state forms peroxy acid by the action of potentially higher inorganic peroxy compounds in the presence of an effective quantity of a flotation collectorfrother, an alkyl mono olefine, diolefine or triolefine adducts of polyhydric alcohol, the indicated compounds provide selectivity and/or recovery of oxidic minerals of Ti, Zr, Ce, Th, V, Nb, Ta, Cr, W, and U, over silica and silicate gangue.
Inventors
- 👤 Vojislav Petrovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:42
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06; B03D1/001; B03D1/002; B03D1/004; B03D1/008; B03D2201/00; B03D2201/02; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
AN IMPROVED METHOD OF BENEFICIATING ORES SELECTED FROM THE GROUP CONSISTING OF OXIDE ORES AND MINERALS OF TITANIUM, ZIRCONIUM, CERIUM, THORIUM, VANADIUM NIOBIUM, TANTALUM, CHROMIUM, VOLFRAM, AND URANIUM, BY FROTH FLOTATION PROCESS TO PRODUCE A FROTH CONCENTRATE OF DESIRED METAL VALUES WHICH IMPROVEMENT COMPRISES: EFFECTING THE FROTH FLOTATION OF THE ORE BY TREATING THE COMMINUTED ORE OF THE MMINERAL SLURRY WITH INORGANIC PEROXYACIDS OR THEIR ALKALI OR AMMONIUM SALTS, FLOLOWED BY AN EFFECTIVE AMOUNT OF A COLLECTOR FROTHER OF AN ALKYL MONO-, DI, TRI-OLEFIN ADDUCT OR A GLYCEROL, DIGLYCEROL, HEXANETRIPL, POLYOXYMETHYLENE OR A MIXTURE THEREOF HAVING NO MORE THAN SIX HYDROXYL GROUPS PER MOLECULE, SAID OLEFIN HAVING FROM 5 TO 10 CARBON ATOMS, SAID ADDUCT HAVING FROM 10 TO 22 CARBON ATOMS; AND RECOVERING A FROTH CONCENTRATE RELATIVELY RICH IN TH DESIRED METAL VALUES TO LEAVE THE TAILINGS RELATIVELY POOR IN DESIRED METAL VALUES.
Claim 2
Dependent Claim
144 words
AN IMPROVED METHOD OF BENEFICIATING ORES SELECTED FROM THE GROUP CONSISTING OF OXIDE ORES AND MINERALS OF TITANIUM, ZIRCONIUM, CERIUM, THORIUM, VANADIUM NIOBIUM, TANTALUM, CHROMIUM, VOLFRAM, AND URANIUM, BY FROTH FLOTATION PROCESS TO PRODUCE A FROTH CONCENTRATE OF DESIRED METAL VALUES WHICH IMPROVEMENT COMPRISES: EFFECTING THE FROTH FLOTATION OF THE ORE BY TREATING THE COMMINUTED ORE OF THE MMINERAL SLURRY WITH INORGANIC PEROXYACIDS OR THEIR ALKALI OR AMMONIUM SALTS, FLOLOWED BY AN EFFECTIVE AMOUNT OF A COLLECTOR FROTHER OF AN ALKYL MONO-, DI, TRI-OLEFIN ADDUCT OR A GLYCEROL, DIGLYCEROL, HEXANETRIPL, POLYOXYMETHYLENE OR A MIXTURE THEREOF HAVING NO MORE THAN SIX HYDROXYL GROUPS PER MOLECULE, SAID OLEFIN HAVING FROM 5 TO 10 CARBON ATOMS, SAID ADDUCT HAVING FROM 10 TO 22 CARBON ATOMS; AND RECOVERING A FROTH CONCENTRATE RELATIVELY RICH IN TH DESIRED METAL VALUES TO LEAVE THE TAILINGS RELATIVELY POOR IN DESIRED METAL VALUES.
Claim 3
Dependent Claim
44 words
A method according to claim 1, wherein the peroxidizing agents are selected from the group consisting of peroxycarbonate, peroxyborate, peroxynitric acid, peroxymonophosphoric acid, peroxydiphoshoric acid, peroxymonosulfuric acid, peroxydisulfuric acid, and in the presence of hypochlorous acid and hypochlorites as accelerator of the peroxidizing process.
References Cited (Backward Citations)
US1246665A
Cited
US1370366A
Cited
US1438590A
Cited
US1530496A
Cited
US1678312A
Cited
US1690225A
Cited
US2826301A
Cited
US3595390A
Cited
US3710939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |