Patent US3249399A successfully refreshed from Google Patents.
US3249399A
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Process for chlorination of electrolytic copper refinery slimes
Assignee: Cyprus Amax Minerals Co
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Filing: 1963-11-20
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Granted: 1966-05-03
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 James E Hoffmann
- 👤 Dominic C Cusanelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:21
CPC Classifications
C; C01; C01G; C01G28/00; C01G28/007; C01B; C01B19/00; C01B19/005; C01G30/00; C01G30/006; C01P; C01P2004/00; C01P2004/50; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR SIMULTANEOUSLY SEPARATING SELENIUM, TELLURIUM, ANTIMONY AND ARSENIC VALUES TOGETHER WITH ANY TIN VALUE WHICH MAY ALSO BE PRESENT FROM ELECTROLYTIC COPPER REFINERY SLIMES ADDITIONALLY CONTAINING AT LEAST ONE OTHER METAL VALUE THE CHLORIDE OF WHICH IS NON-VOLATILE AT TEMPERATURES FROM 300 TO 500*C. WHICH PROCESS COMPRISES THE STEPS OF AGGLOMERATING SAID SLIMES IN ADMIXTURE WITH AN INERT BINDER, CHEMICALY CONVERTING AT LEAST A MAJOR PORTION OF THE SELENIUM, TELLURIM, ANTIMONY AND ARSENIC VALUES AS WELL AS ANY TIN VALUES PRESENT IN SAID SLIMES INTO VOLATILE CHLORIDES BY CONTACTING SAID AGGLOMERATED SLIMES WITH CHLORINE GAS IN A REACTION ZONE WHILE MAINTAINING A REACTION TEMPERATURE WITH SAID ZONE OF BETWEEN 300*C. AND 500*C. AND REMOVING THE VOLATILE CHLORIDES FROM SAID RECTION ZONE.
Claim 2
Dependent Claim
123 words
A PROCESS FOR SIMULTANEOUSLY SEPARATING SELENIUM, TELLURIUM, ANTIMONY AND ARSENIC VALUES TOGETHER WITH ANY TIN VALUE WHICH MAY ALSO BE PRESENT FROM ELECTROLYTIC COPPER REFINERY SLIMES ADDITIONALLY CONTAINING AT LEAST ONE OTHER METAL VALUE THE CHLORIDE OF WHICH IS NON-VOLATILE AT TEMPERATURES FROM 300 TO 500*C. WHICH PROCESS COMPRISES THE STEPS OF AGGLOMERATING SAID SLIMES IN ADMIXTURE WITH AN INERT BINDER, CHEMICALY CONVERTING AT LEAST A MAJOR PORTION OF THE SELENIUM, TELLURIM, ANTIMONY AND ARSENIC VALUES AS WELL AS ANY TIN VALUES PRESENT IN SAID SLIMES INTO VOLATILE CHLORIDES BY CONTACTING SAID AGGLOMERATED SLIMES WITH CHLORINE GAS IN A REACTION ZONE WHILE MAINTAINING A REACTION TEMPERATURE WITH SAID ZONE OF BETWEEN 300*C. AND 500*C. AND REMOVING THE VOLATILE CHLORIDES FROM SAID RECTION ZONE.
References Cited (Backward Citations)
US890432A
Cited
GB191126644A
Cited
US1730548A
Cited
US1931944A
Cited
US2184887A
Cited
US2594370A
Cited
US2695221A
Cited
US2723903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |