Patent US2614692A successfully refreshed from Google Patents.
US2614692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of metallic minerals from phosphate-silica ores containing minor amounts of the metallic minerals
Assignee: International Minerals and Chemical Corp
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Filing: 1948-06-08
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Granted: 1952-10-21
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Expires: 1968-06-08
Abstract
No abstract record available.
Inventors
- 👤 James E Lawver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:52
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A PROCESS OF CONCENTRATING BASE-METAL OXIDE TYPE METALLIC MINERALS FROM PHOSPHATE-SILICA ORES CONTAINING THE METALLIC MINERALS IN MINOR AMOUNTS, WHEREIN THE ORE IN A FINELY DIVIDED STATE IS FIRST SUBJECTED TO A FLOTATION OPERATION EMPLOYING CARBOXY-CONTAINING NEGATIVE ION AGENT TO RECOVER A PHOSPHATE-METALLIC MINERALS CONCENTRATE AND THE CONCENTRATE IS SUBJECTED TO A FLOTATION OPERATION EMPLOYING NITROGENOUS POSITIVE ION AGENT TO RECOVER A SILICA-METALLIC MINERALS FROTH FRACTION, THE IMPROVEMENT COMPRISING SUBJECTING SAID SILICA-METALLIC MINERALS FRACTION TO AT LEAST ONE FLOTATION OPERATION IN THE PRESENCE OF A REAGENT COMPOSITION COMPRISING AT LEAST ONE FLOTATION COLLECTOR REAGENT SELECTED FROM THE GROUP CONSISTING OF CARBOXYL-CONTAINING NEGATIVE ION AGENT, SALTS OF SAID AGENT, AND ESTERS OF SAID AGENT AND ADJUSTING THE PH TO SEPARATE A FROTH CONCENTRATE INCH IN METALLIC MINERALS.
Claim 2
Dependent Claim
127 words
IN A PROCESS OF CONCENTRATING BASE-METAL OXIDE TYPE METALLIC MINERALS FROM PHOSPHATE-SILICA ORES CONTAINING THE METALLIC MINERALS IN MINOR AMOUNTS, WHEREIN THE ORE IN A FINELY DIVIDED STATE IS FIRST SUBJECTED TO A FLOTATION OPERATION EMPLOYING CARBOXY-CONTAINING NEGATIVE ION AGENT TO RECOVER A PHOSPHATE-METALLIC MINERALS CONCENTRATE AND THE CONCENTRATE IS SUBJECTED TO A FLOTATION OPERATION EMPLOYING NITROGENOUS POSITIVE ION AGENT TO RECOVER A SILICA-METALLIC MINERALS FROTH FRACTION, THE IMPROVEMENT COMPRISING SUBJECTING SAID SILICA-METALLIC MINERALS FRACTION TO AT LEAST ONE FLOTATION OPERATION IN THE PRESENCE OF A REAGENT COMPOSITION COMPRISING AT LEAST ONE FLOTATION COLLECTOR REAGENT SELECTED FROM THE GROUP CONSISTING OF CARBOXYL-CONTAINING NEGATIVE ION AGENT, SALTS OF SAID AGENT, AND ESTERS OF SAID AGENT AND ADJUSTING THE PH TO SEPARATE A FROTH CONCENTRATE INCH IN METALLIC MINERALS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |