Patent US2677608A successfully refreshed from Google Patents.
US2677608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for supplying materials to reactor furnaces
Assignee: Dorr Co
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Filing: 1950-03-21
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Granted: 1954-05-04
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Expires: 1970-03-21
Abstract
No abstract record available.
Inventors
- 👤 James B Mckay
- 👤 Elliott J Roberts
- 👤 Francis L Bosqui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:28
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
THE CONTINUOUS PROCESS OF FEEDING AN ALREADY WET COHERENT THICKENED AND FILTERED MUD OF GROUND METAL SULFIDE ORE SOLIDS INTO A SOLIDSFLUIDIZING REACTOR WHEREIN THE ORE IS COMBUSTIBLY ROASTED TO YIELD A REACTION-PRODUCT METAL-BEARING CALCINE OF SUCH SULFIDE, WHICH COMPRISES MAINTAINING IN AN ENCLOSED CHAMBER HAVING A SUPERJACENT GAS-COLLECTING SPACE AND A SUBJACENT BED OF ROASTABLE SULFIDE ORE SOLIDS IN FLUIDIZED CONDITION SUPPORTED FROM A GAS-PERVIOUS PARTITION BY SUPPLYING AN OXYGEN-BEARING GAS DISPERSINGLY THROUGH THE PARTITION AT SOLIDS-FLUIDIZING VELOCITY, EFFECTING COMBUSTION IN THE BED BETWEEN ITS FLUIDIZING GAS AND ITS ROASTABLE SOLIDS TO HEAT THE BED TO A TEMPERATURE LYING IN THE ROASTING RANGE WHEREBY TO YIELD A CALCINE THAT IS CHEMICALLY DIFFERENT FROM THE FEED SOLIDS, CONTROLLING THE FLUID-LEVEL OF THE BED, DISCHARGING ROASTED ORE SOLIDS FROM THE FLUID-LEVEL, REPLACING SOLIDS SO DISCHARGED BY FEEDING TO THE REACTOR ABOVE THE PARTITION FILTER-CAKE OF SUCH ORE THAT IS IN FINELYDIVIDED THICKENED AND FILTERED CONDITION BY MECHANICALLY PUMPING A SLURRY BLENDED OF SUCH CAKE AND FLOWABILITY-INCREASING VAPORIZABLE LIQUID, AND CONTROLLING THE QUANTITY OF FLOWABILITY-INCREASING LIQUID TO LEAVE THE SLURRY WITH AS HIGH A SOLIDS CONSISTENCY AS CAN BE SO PUMPED.
Claim 2
Dependent Claim
189 words
THE CONTINUOUS PROCESS OF FEEDING AN ALREADY WET COHERENT THICKENED AND FILTERED MUD OF GROUND METAL SULFIDE ORE SOLIDS INTO A SOLIDSFLUIDIZING REACTOR WHEREIN THE ORE IS COMBUSTIBLY ROASTED TO YIELD A REACTION-PRODUCT METAL-BEARING CALCINE OF SUCH SULFIDE, WHICH COMPRISES MAINTAINING IN AN ENCLOSED CHAMBER HAVING A SUPERJACENT GAS-COLLECTING SPACE AND A SUBJACENT BED OF ROASTABLE SULFIDE ORE SOLIDS IN FLUIDIZED CONDITION SUPPORTED FROM A GAS-PERVIOUS PARTITION BY SUPPLYING AN OXYGEN-BEARING GAS DISPERSINGLY THROUGH THE PARTITION AT SOLIDS-FLUIDIZING VELOCITY, EFFECTING COMBUSTION IN THE BED BETWEEN ITS FLUIDIZING GAS AND ITS ROASTABLE SOLIDS TO HEAT THE BED TO A TEMPERATURE LYING IN THE ROASTING RANGE WHEREBY TO YIELD A CALCINE THAT IS CHEMICALLY DIFFERENT FROM THE FEED SOLIDS, CONTROLLING THE FLUID-LEVEL OF THE BED, DISCHARGING ROASTED ORE SOLIDS FROM THE FLUID-LEVEL, REPLACING SOLIDS SO DISCHARGED BY FEEDING TO THE REACTOR ABOVE THE PARTITION FILTER-CAKE OF SUCH ORE THAT IS IN FINELYDIVIDED THICKENED AND FILTERED CONDITION BY MECHANICALLY PUMPING A SLURRY BLENDED OF SUCH CAKE AND FLOWABILITY-INCREASING VAPORIZABLE LIQUID, AND CONTROLLING THE QUANTITY OF FLOWABILITY-INCREASING LIQUID TO LEAVE THE SLURRY WITH AS HIGH A SOLIDS CONSISTENCY AS CAN BE SO PUMPED.
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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |