Patent US2970688A successfully refreshed from Google Patents.
US2970688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovery of minerals
Assignee: International Minerals and Chemical Corp
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Filing: 1957-06-28
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Granted: 1961-02-07
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Expires: 1977-06-28
Abstract
No abstract record available.
Inventors
- 👤 Homer E Uhland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:32
CPC Classifications
B; B03; B03B; B03B9/00; B03D; B03D1/00; B03D1/02; B03D1/06; B03D1/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A PROCESS FOR THE RECOVERY OF BASE METAL OXIDE TYPE METALLIC MINERAL FROM PHOSPHATE-SILICA ORES CONTAINING THE METALLIC MINERALS IN MINOR AMOUNTS WHICH COMPRISES SUBJECTING THE ORE IN A FINELY DIVIDED STATE TO A FLOTATION OPERATING EM PLOYING ANIONIC REAGENTS HAVING AN AFFINITY FOR PHOSPHATE OT RECOVER A PHOSPHATE-METALLIC MINERAL CONCENTRATE AND A THROWAWAY SILICA TAIL,REMOVING THE ANIONIC REGENTS FROM SAID PHOSPHATE CONCENTRATE, SUBJECTING THE PHOSPHATE CONCENTRAATE AFTER REMOVING THE ANIONIC REGENTS TO A FLOTATION OPERATION EMPLOYING CATIOMIC REGENTS TO RECOVER A FINAL PHOSPHATE CONCENTRATE AND A SILICA-METALLIC MINERAL FORTH PRODUCT, REMOVING SAID CATIONIC REGENTS FROM SAID SILICA-METALLIC MINERAL PRODUCT, DULUTING THE SILICA-METALLIC MINERALS PRODUCT AFTER REMOVING SAID CATIONIC REGENTS WITH WATER, SUBJECTING THE DILUTE SILICA-METALLIC MINERAL PRODUCT TO GRAVITATIONAL SEPARATION THEREBY STRATIFYING THE MINERALS ACCORDING TO THEIR SPECIFIC GRAVITIES, RECOVERING A STATA RICH IN METALLIC MINERALS, AND RECYCLING THE SILICA-PHOSPHATE STRATA TO THE FEED TO THE ANIONIC FLOTATION.
Claim 2
Dependent Claim
149 words
A PROCESS FOR THE RECOVERY OF BASE METAL OXIDE TYPE METALLIC MINERAL FROM PHOSPHATE-SILICA ORES CONTAINING THE METALLIC MINERALS IN MINOR AMOUNTS WHICH COMPRISES SUBJECTING THE ORE IN A FINELY DIVIDED STATE TO A FLOTATION OPERATING EM PLOYING ANIONIC REAGENTS HAVING AN AFFINITY FOR PHOSPHATE OT RECOVER A PHOSPHATE-METALLIC MINERAL CONCENTRATE AND A THROWAWAY SILICA TAIL,REMOVING THE ANIONIC REGENTS FROM SAID PHOSPHATE CONCENTRATE, SUBJECTING THE PHOSPHATE CONCENTRAATE AFTER REMOVING THE ANIONIC REGENTS TO A FLOTATION OPERATION EMPLOYING CATIOMIC REGENTS TO RECOVER A FINAL PHOSPHATE CONCENTRATE AND A SILICA-METALLIC MINERAL FORTH PRODUCT, REMOVING SAID CATIONIC REGENTS FROM SAID SILICA-METALLIC MINERAL PRODUCT, DULUTING THE SILICA-METALLIC MINERALS PRODUCT AFTER REMOVING SAID CATIONIC REGENTS WITH WATER, SUBJECTING THE DILUTE SILICA-METALLIC MINERAL PRODUCT TO GRAVITATIONAL SEPARATION THEREBY STRATIFYING THE MINERALS ACCORDING TO THEIR SPECIFIC GRAVITIES, RECOVERING A STATA RICH IN METALLIC MINERALS, AND RECYCLING THE SILICA-PHOSPHATE STRATA TO THE FEED TO THE ANIONIC FLOTATION.
References Cited (Backward Citations)
US2614692A
Cited
US2753997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |