Patent JPS5527342A successfully refreshed from Google Patents.
US3198622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical-physical treatment of ores, and/or ore residues
Assignee: Societe des Acieries de Pompey
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Filing: 1962-03-05
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Granted: 1965-08-03
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Herzog Eugene
- 👤 Backer Laszlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:04
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A PROCESS FOR THE TREATMENT OF IRON OXIDE ORE CONTAINING FERROUS COMPOUNDS IN ASSOCIATION WITH FERRIC COMPOUNDS, SAID FERROUS COMPOUNDS PROMOTING MAGNETIC TRANSFORMATION OF SAID IRON OXIDE ORE FOR CONCENTRATING THE IRON CONTENT THEREOF AND SEPARATING IT FROM ADDITIONAL COMPONENTS CONTAINED IN SAID ORE, WHICH COMPRISES THE STEPS (A) OF CRUSHING THE ORE TO A PARTICLE SIZE OF ABOUT 10 MM.; (B) SUBJECTING THE CRUSHED ORE TO THE ACTION OF BOILING CAUSTIC SODA SOLUTION CONTAINING FROM 300 GRAMS TO 500 GRAMS NA2O PER LITER; FOR A TIME RANGING FROM 10 MINUTES TO 3 HOURS; (C) SEPARATING IN THE BOILED SOLUTION THE MAGNETIC IRON OXIDE OBTAINED BY THE ACTION OF SAID CAUSTIC FROM THE NONMAGNETIC COMPONENTS BY MEANS OF A MAGNETIC FIELD; (D) RINSING THE MAGNETIC IRON OXIDE PORTION AND AGGLOMERATING IT BY COLD COMPRESSION; (E) SEPARATING THE SOLIDS IN THE REMAINING SOLUTION OF NON-MAGNETIC COMPONENTS BY DECANTING AND FILTERING,
Claim 2
Dependent Claim
149 words
A PROCESS FOR THE TREATMENT OF IRON OXIDE ORE CONTAINING FERROUS COMPOUNDS IN ASSOCIATION WITH FERRIC COMPOUNDS, SAID FERROUS COMPOUNDS PROMOTING MAGNETIC TRANSFORMATION OF SAID IRON OXIDE ORE FOR CONCENTRATING THE IRON CONTENT THEREOF AND SEPARATING IT FROM ADDITIONAL COMPONENTS CONTAINED IN SAID ORE, WHICH COMPRISES THE STEPS (A) OF CRUSHING THE ORE TO A PARTICLE SIZE OF ABOUT 10 MM.; (B) SUBJECTING THE CRUSHED ORE TO THE ACTION OF BOILING CAUSTIC SODA SOLUTION CONTAINING FROM 300 GRAMS TO 500 GRAMS NA2O PER LITER; FOR A TIME RANGING FROM 10 MINUTES TO 3 HOURS; (C) SEPARATING IN THE BOILED SOLUTION THE MAGNETIC IRON OXIDE OBTAINED BY THE ACTION OF SAID CAUSTIC FROM THE NONMAGNETIC COMPONENTS BY MEANS OF A MAGNETIC FIELD; (D) RINSING THE MAGNETIC IRON OXIDE PORTION AND AGGLOMERATING IT BY COLD COMPRESSION; (E) SEPARATING THE SOLIDS IN THE REMAINING SOLUTION OF NON-MAGNETIC COMPONENTS BY DECANTING AND FILTERING,
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |