US3314537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of phosphate rock slimes
Assignee: Minerals and Chemicals Philipp Corp
•
Filing: 1964-11-23
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Granted: 1967-04-18
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Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Greene
- 👤 James B Duke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:40
CPC Classifications
C; C05; C05B; C05B11/00; C05B11/02; B; B03; B03D; B03D1/00; B03D1/001; B03D1/002; B03D1/004; B03D1/006; B03D1/008; B03D2201/00; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906; Y10S210/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD FOR OBTAINING A PHOSPHATIC CONCENTRATE FROM AQUEOUS SLIMES PRODUCED BY THE HYDRAULIC WASHING OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TENNESSEE PHOSPHATE ROCK AND WESTERN PHOSPHATE ROCK, SAID SLIMES COMPRISING A MIXTURE OF PHOSPHATE MINERAL AND ARGILLACEOUS MINERALS AND CONSISTING OF PARTICLES SUBSTANTIALLY ALL OF WHICH ARE FINER THAN 325 MESH, TYLER STANDARD, AND A MAJOR WEIGHT PROPORTION OF WHICH IS COMPOSED OF PARTICLES FINER THAN ABOUT 10 MICRONS, WHICH COMPRISES: INCORPORATING AN ALKALINE DEFLOCCULATING AGENT INTO SAID AQUEOUS SLIMES WITH AGITATION SO AS TO PRODUCE A DEFLOCCULATED AQUEOUS SLIP, CONDITIONING SAID DEFLOCCULATED SLIP FOR FROTH FLOTATION WITH A FATTY ACID COLLECTOR REAGENT AND AN OIL MATERIAL SELECTED FROM THE GROUP CONSISTING OF FUEL OIL, KEROSENE, MINERAL OIL AND DIESEL OIL. AND SUBJECTING THE THUS CONDITIONED AQUEOUS SLIP TO FROTH FLOTATION IN AN ALKALINE CIRCUIT TO OBTAIN A FROTH PRODUCT WHICH IS A CONCENTRATE OF PHOSPHATE VALUES ORIGINALLY IN THE SLIMES AND A TAILING.
Claim 2
Independent Claim
158 words
A METHOD FOR OBTAINING A PHOSPHATIC CONCENTRATE FROM AQUEOUS SLIMES PRODUCED BY THE HYDRAULIC WASHING OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TENNESSEE PHOSPHATE ROCK AND WESTERN PHOSPHATE ROCK, SAID SLIMES COMPRISING A MIXTURE OF PHOSPHATE MINERAL AND ARGILLACEOUS MINERALS AND CONSISTING OF PARTICLES SUBSTANTIALLY ALL OF WHICH ARE FINER THAN 325 MESH, TYLER STANDARD, AND A MAJOR WEIGHT PROPORTION OF WHICH IS COMPOSED OF PARTICLES FINER THAN ABOUT 10 MICRONS, WHICH COMPRISES: INCORPORATING AN ALKALINE DEFLOCCULATING AGENT INTO SAID AQUEOUS SLIMES WITH AGITATION SO AS TO PRODUCE A DEFLOCCULATED AQUEOUS SLIP, CONDITIONING SAID DEFLOCCULATED SLIP FOR FROTH FLOTATION WITH A FATTY ACID COLLECTOR REAGENT AND AN OIL MATERIAL SELECTED FROM THE GROUP CONSISTING OF FUEL OIL, KEROSENE, MINERAL OIL AND DIESEL OIL. AND SUBJECTING THE THUS CONDITIONED AQUEOUS SLIP TO FROTH FLOTATION IN AN ALKALINE CIRCUIT TO OBTAIN A FROTH PRODUCT WHICH IS A CONCENTRATE OF PHOSPHATE VALUES ORIGINALLY IN THE SLIMES AND A TAILING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |