Patent US3443932A successfully refreshed from Google Patents.
US3443932A
Expired / Lapsed
US
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Metallurgical process and apparatus
Assignee: FLSmidth Inc
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Filing: 1966-10-28
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Granted: 1969-05-13
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Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 Deering D Melin
- 👤 Peter C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:14
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/04; C22B11/00; C22B11/08; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A METALLURGICAL PROCESS IN WHICH VALUES ARE DISSOLVED BY CONTACT OF DIVIDED ORE SOLIDS WITH AN AQUEOUS LIQUID SOLUTION, THE STEPS OF FORMING A PULP CONTAINING THE DIVIDED ORE SOLIDS AND AN AQUEOUS SOLUTION COMPRISING WATER AND A CHEMICAL REAGENT, THE SOLUTION BEING CAPABLE OF DISSOLVING METALLURGICAL VALUES IN THE ORE SOLIDS, DELIVERING THE PULP UNDER PRESSURE TO A CONFINED SWIRLING BODY OF THE SAME, WHEREBY CENTRIFUGAL AND SHEAR FORCES ARE DEVELOPED WITHIN THE SWIRLING BODY, AND CONTINUOUSLY INTRODUCING AN OXYGEN-CONTAINING GAS INTO THE PERIPHERY OF SAID SWIRLING BODY TO PROMOTE DISSOLUTION OF METALLURGICAL VALUES.
Claim 2
Dependent Claim
96 words
IN A METALLURGICAL PROCESS IN WHICH VALUES ARE DISSOLVED BY CONTACT OF DIVIDED ORE SOLIDS WITH AN AQUEOUS LIQUID SOLUTION, THE STEPS OF FORMING A PULP CONTAINING THE DIVIDED ORE SOLIDS AND AN AQUEOUS SOLUTION COMPRISING WATER AND A CHEMICAL REAGENT, THE SOLUTION BEING CAPABLE OF DISSOLVING METALLURGICAL VALUES IN THE ORE SOLIDS, DELIVERING THE PULP UNDER PRESSURE TO A CONFINED SWIRLING BODY OF THE SAME, WHEREBY CENTRIFUGAL AND SHEAR FORCES ARE DEVELOPED WITHIN THE SWIRLING BODY, AND CONTINUOUSLY INTRODUCING AN OXYGEN-CONTAINING GAS INTO THE PERIPHERY OF SAID SWIRLING BODY TO PROMOTE DISSOLUTION OF METALLURGICAL VALUES.
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |