US2610738A
Expired / Lapsed
US
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Froth flotation of monazite from heavy gravity minerals
Assignee: Climax Molybdenum Co
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Filing: 1951-06-02
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Granted: 1952-09-16
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Expires: 1971-06-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Cuthbertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:48
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/016; B03D2201/00; B03D2201/02; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A FROTH FLOTATION PROCESS FOR SEPARATING MONAZITE FROM HEAVY GRAVITY MINERALS SELECTED FROMTHE GROUP CONSISTING OF WOLFRAMITE, RUTILE AND CASSITERITE, WHICH COMPRISES ADDING TO AN ACID PULP CONCENTRATE CONTAINING MONAZITE AND AT LEAST ONE OF THE ABOVE MENTIONED HEAVY GRAVITY MINERALS A CATIONIC FLOTATION AGENT OF THE AMINE TYPE AND A STARCHY PRODUCT SO TAHT A FROTH IS FORMED WHEN AIR IS PASSED THROUGH THE PULP WHEREBY MONAZITE IS COLLECTED IN THE FLOTATION FROTH AND AT LEAST ONE OF THE HEAVY GRAVITY MINERALS SELECTED FROM THE GROUP CONSISTING OF WOLFRAMITE, RUTILE AND CASSITERITE IN THE FLOTATION TAILING.
Claim 2
Dependent Claim
97 words
A FROTH FLOTATION PROCESS FOR SEPARATING MONAZITE FROM HEAVY GRAVITY MINERALS SELECTED FROMTHE GROUP CONSISTING OF WOLFRAMITE, RUTILE AND CASSITERITE, WHICH COMPRISES ADDING TO AN ACID PULP CONCENTRATE CONTAINING MONAZITE AND AT LEAST ONE OF THE ABOVE MENTIONED HEAVY GRAVITY MINERALS A CATIONIC FLOTATION AGENT OF THE AMINE TYPE AND A STARCHY PRODUCT SO TAHT A FROTH IS FORMED WHEN AIR IS PASSED THROUGH THE PULP WHEREBY MONAZITE IS COLLECTED IN THE FLOTATION FROTH AND AT LEAST ONE OF THE HEAVY GRAVITY MINERALS SELECTED FROM THE GROUP CONSISTING OF WOLFRAMITE, RUTILE AND CASSITERITE IN THE FLOTATION TAILING.
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) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |