Patent US2752299A successfully refreshed from Google Patents.
US2752299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic production of manganese and ferromanganese
Assignee: Individual
•
Filing: 1952-01-08
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Granted: 1956-06-26
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Expires: 1972-01-08
Abstract
No abstract record available.
Inventors
- 👤 Hugh S Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:16
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 words
A PROCESS FOR RECOVERING MANGANESE VALUES AS ANHYDROUS CHLORIDE FROM ALLOYS AND OXIDE ORES CONTAINING MANGANESE, IRON, AND OTHER MATERIAL, COMPRISING CONTACTING THE MATERIAL UNDER ANHYDROUS CONDITIONS IN A REACTION CHAMBER AT A TEMPERATURE BETWEEN ABOUT 315* C. AND 700* C. WITH CHLORIDIZING REAGENT CONSISTING ESSENTIALLY OF CHLORIDE TO CONVERT AT LEAST A PORTION OF THE IRON TO FERRIC CHLORIDE AND SUBLINE THE SAME, SEPARATING GASEOUS FERRIC CHLORIDE AT IT IS FORMED, CONTACTING THE RESIDUE UNDER ANHYDROUS CONDITIONS IN A REACTION CHAMBER AT A TEMPERATURE ABOVE ABOUT 800* C. WITH A CHLORIDIZING REAGENT CONSISTING ESSENTIALLY OF ANHYDROUS HYDROGEN CHLORIDE TO CONVERT THE MANGANESE TO MANGANOUS CHLORIDE AND ANY REMAINING IRON TO FERROUS CHLORIDE AND TO SUBLINE THE SAME, AND REMOVING AND CONDENSING THE SECOND SUBLIMATE UNDER ANHYDROUS CONDITIONS, ACTIVE OXIDIZING GASES AND ACTIVE REDUCING GAGES BEING EXCLUDED FROM THE REACTION CHAMBER DURING EACH OF THE CHLORIDIZING REACTIONS.
Claim 2
Dependent Claim
147 words
A PROCESS FOR RECOVERING MANGANESE VALUES AS ANHYDROUS CHLORIDE FROM ALLOYS AND OXIDE ORES CONTAINING MANGANESE, IRON, AND OTHER MATERIAL, COMPRISING CONTACTING THE MATERIAL UNDER ANHYDROUS CONDITIONS IN A REACTION CHAMBER AT A TEMPERATURE BETWEEN ABOUT 315* C. AND 700* C. WITH CHLORIDIZING REAGENT CONSISTING ESSENTIALLY OF CHLORIDE TO CONVERT AT LEAST A PORTION OF THE IRON TO FERRIC CHLORIDE AND SUBLINE THE SAME, SEPARATING GASEOUS FERRIC CHLORIDE AT IT IS FORMED, CONTACTING THE RESIDUE UNDER ANHYDROUS CONDITIONS IN A REACTION CHAMBER AT A TEMPERATURE ABOVE ABOUT 800* C. WITH A CHLORIDIZING REAGENT CONSISTING ESSENTIALLY OF ANHYDROUS HYDROGEN CHLORIDE TO CONVERT THE MANGANESE TO MANGANOUS CHLORIDE AND ANY REMAINING IRON TO FERROUS CHLORIDE AND TO SUBLINE THE SAME, AND REMOVING AND CONDENSING THE SECOND SUBLIMATE UNDER ANHYDROUS CONDITIONS, ACTIVE OXIDIZING GASES AND ACTIVE REDUCING GAGES BEING EXCLUDED FROM THE REACTION CHAMBER DURING EACH OF THE CHLORIDIZING REACTIONS.
Claim 3
Dependent Claim
92 words
THE PROCESS OF CLAIM 1 IN WHICH SAID SECOND SUBLIMATE IS DISSOLVED IN A FUSED ALKALI METAL CHLORIDE BATH IN A CLOSED ELECTROLYTIC CELL AND IS ELECTROLYZED WHILE DIFFUSING HYDROGEN GAS THROUGH THE BATH TO DEPOSIT MANGANESE AND ANY IRON PRESENT AT THE CATHODE AND RELEASE CHLORINE AT THE ANODE, WHEREBY ANHYDROUS HYDROGEN CHLORRIDE IS FORMED IN THE BATH BY REACTION OF HYDROGEN AND CHLORINE, AND REMOVING ANHYDROUS HYDROGEN CHLORIDE FROM THE CELL AS IT IS FORMED AND RETURNING IT TO THE PROCESS FOR TREATING ADDITIONAL RESIDUE FROM THE FIRST CHLORIDIZING REACTION.
References Cited (Backward Citations)
US2176776A
Cited
US2030867A
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US2030868A
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DE709742C
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US2290843A
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US2361925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |