US2668617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of phosphate furnace feed
Assignee: Attapulgus Minerals and Chemicals Corp
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Filing: 1949-10-06
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Granted: 1954-02-09
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Expires: 1969-10-06
Abstract
No abstract record available.
Inventors
- 👤 Wesley M Houston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:24
CPC Classifications
C; C05; C05B; C05B13/00; C05B13/02; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THE METHOD OF PRODUCING A PHOSPHATE FURNACE FEED WHICH COMPRISES WET SCRUBBING, DISINTEGRATING AND DESLIMING A PHOSPHATE ORE MATRIX AND OBTAINING THEREFROM A FEED IN WHICH THE PHOSPHATE AND SILICA PARTICLES ARE ABOUT -14 MESH, CONDITIONING SAID DESCLIMED FEED IN AN AQUEOUS PULP WITH ANIONIC AGENTS HAVING AN AFFINITY FOR THE PHOSPHATE, SUBJECTING SAID CONDITIONED PULP TO A WET SEPARATING TREATMENT, THE AMOUNT OF SAID REAGENTS BEING SUFFICIENT TO PRODUCE A PHOSPHATE CONCENTRATE PRINCIPALLY COMPOSED OF MOST OF THE SMALLER PHOSPHATE PARTICLES AND A LARGE PART OF THE FINER SILICA PARTICLES, AND A TAILING PRINCIPALLY COMPOSED OF THE LARGER PHOSPHATE PARTICLES AND THE REMAINING SILICA PARTICLES, AND SUBJECTING SAID TAILING TO A CLASSIFICATION TREATMENT RESULTING IN THE COLLECTION FROM SAID TAILING OF THE LARGER PHOSPHATE AND LARGER SILICA PARTICLES WHICH ARE ADDED TO SAID CONCENTRATE, THEREBY PRODUCING DIRECTLY FROM THE PHOSPHATE ORE MATRIX A FINAL PRODUCT WHICH IS A SUITABLE PHOSPHATE FURNACE FEED.
Claim 2
Independent Claim
153 words
THE METHOD OF PRODUCING A PHOSPHATE FURNACE FEED WHICH COMPRISES WET SCRUBBING, DISINTEGRATING AND DESLIMING A PHOSPHATE ORE MATRIX AND OBTAINING THEREFROM A FEED IN WHICH THE PHOSPHATE AND SILICA PARTICLES ARE ABOUT -14 MESH, CONDITIONING SAID DESCLIMED FEED IN AN AQUEOUS PULP WITH ANIONIC AGENTS HAVING AN AFFINITY FOR THE PHOSPHATE, SUBJECTING SAID CONDITIONED PULP TO A WET SEPARATING TREATMENT, THE AMOUNT OF SAID REAGENTS BEING SUFFICIENT TO PRODUCE A PHOSPHATE CONCENTRATE PRINCIPALLY COMPOSED OF MOST OF THE SMALLER PHOSPHATE PARTICLES AND A LARGE PART OF THE FINER SILICA PARTICLES, AND A TAILING PRINCIPALLY COMPOSED OF THE LARGER PHOSPHATE PARTICLES AND THE REMAINING SILICA PARTICLES, AND SUBJECTING SAID TAILING TO A CLASSIFICATION TREATMENT RESULTING IN THE COLLECTION FROM SAID TAILING OF THE LARGER PHOSPHATE AND LARGER SILICA PARTICLES WHICH ARE ADDED TO SAID CONCENTRATE, THEREBY PRODUCING DIRECTLY FROM THE PHOSPHATE ORE MATRIX A FINAL PRODUCT WHICH IS A SUITABLE PHOSPHATE FURNACE FEED.
References Cited (Backward Citations)
GB482931A
Cited
US2156245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |