US2808325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of refining pulverized metallic ores involving the production and use of ore pellets
Assignee: Metal Suberdop SA
•
Filing: 1953-02-24
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Granted: 1957-10-01
•
Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Subervie Andre Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:33
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2406; B; B01; B01J; B01J2/00; B01J2/02; Y; Y10; Y10S; Y10S75/00; Y10S75/961
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A METHOD OF REFINING PUIVERIZED METALLIC ORES, WHICH METHOD COMPRISES ADDING TO THE PULVERIZED ORES AN EMULSION OF WATER AND HYDROCARBON OIL WHILE AGITATING TO COAT SAID ORE WITH SAID EMULSION, THEN ADDING TO THE COATED ORES A MIXTURE CONTAINING POWDERED BITUMEN AND A HYDRAULIC BINDER IN APPROXIMATELY EQUAL PROPORTIONS BY WEIGHT WHILE AGITATING TO UNIFORMLY DISTRIBUTE SAID MIXTURE THROUGHOUT THE COATED ORES TO CAUSE (A) SAID HYDROCARBON OIL TO FLUX WITH SAID BITUMEM AND FORM A BITUMINOUS BINDER FOR SAID PULVERIZED METALLIC ORE PARTICLES AND (B) SAID WATER TO REACT WITH SAID HYDRAULIC BINDER TO FORM AN INORGANIC BINDER FOR SAID PULVERIZED METALLIC ORE PARTICULES, COMPRESSING THE RESULTANT MIXTUTE TO PRODUCE INDIVIDUAL PELLETS AND INTRODUCING THE PELLETS INTO A METALLURGICAL FURNACE AND SUBJECTING THEM TO REDUCTION IN SAID FURNACE BY COMBUSTION. THE COMBUSTION OF SAID BITUMINOUS BINDER IN SAID PELLETS DURING THE INITIAL STAGES OF SAID REDUCTION ENHANCING THE POROSITY OF SAID PELLETS WHICH ARE THEN RETAINED IN PELLET FORM BY SAID INORGANIC BINDER AND THUS FACILITATING THE REFINING OF THE METALLIC CONSTITUENT OF SAID PELLETS AS SAID REDUCTION CONTINUES.
Claim 2
Independent Claim
181 words
A METHOD OF REFINING PUIVERIZED METALLIC ORES, WHICH METHOD COMPRISES ADDING TO THE PULVERIZED ORES AN EMULSION OF WATER AND HYDROCARBON OIL WHILE AGITATING TO COAT SAID ORE WITH SAID EMULSION, THEN ADDING TO THE COATED ORES A MIXTURE CONTAINING POWDERED BITUMEN AND A HYDRAULIC BINDER IN APPROXIMATELY EQUAL PROPORTIONS BY WEIGHT WHILE AGITATING TO UNIFORMLY DISTRIBUTE SAID MIXTURE THROUGHOUT THE COATED ORES TO CAUSE (A) SAID HYDROCARBON OIL TO FLUX WITH SAID BITUMEM AND FORM A BITUMINOUS BINDER FOR SAID PULVERIZED METALLIC ORE PARTICLES AND (B) SAID WATER TO REACT WITH SAID HYDRAULIC BINDER TO FORM AN INORGANIC BINDER FOR SAID PULVERIZED METALLIC ORE PARTICULES, COMPRESSING THE RESULTANT MIXTUTE TO PRODUCE INDIVIDUAL PELLETS AND INTRODUCING THE PELLETS INTO A METALLURGICAL FURNACE AND SUBJECTING THEM TO REDUCTION IN SAID FURNACE BY COMBUSTION. THE COMBUSTION OF SAID BITUMINOUS BINDER IN SAID PELLETS DURING THE INITIAL STAGES OF SAID REDUCTION ENHANCING THE POROSITY OF SAID PELLETS WHICH ARE THEN RETAINED IN PELLET FORM BY SAID INORGANIC BINDER AND THUS FACILITATING THE REFINING OF THE METALLIC CONSTITUENT OF SAID PELLETS AS SAID REDUCTION CONTINUES.
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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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |