US3616438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aluminum and aluminum alloys from aluminum chloride
Assignee: Conzinc Riotinto of Australia Ltd
•
Filing: 1968-11-29
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Granted: 1971-10-26
•
Expires: 1988-11-29
Abstract
Abstract Apparatus is provided for the electrolytic production of aluminum which includes an electrolysis compartment and a reactor compartment communicating therewith to which Alchlor vapor is introduced and means for recycling molten metal from the reactor compartment back to the electrolysis compartment.
Inventors
- 👤 Ernest Foley
- 👤 George Lang Herwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:25
CPC Classifications
C; C22; C22B; C22B5/00; C22B5/02; C22B5/04; C22B21/00; C22B21/0038; C22B21/0046; C25; C25C; C25C3/00; C25C3/06; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
25 words
Apparatus according to claim 1 wherein said means of cycling molten metal includes a pumping chamber interposed between the first-mentioned passageway and said reactor compartment.
Claim 2
Dependent Claim
30 words
Apparatus according to claim 1 wherein said means for feeding alchlor vapor includes two concentric tubes, the inner tube supplying alchlor vapor to a lower level than the outer tube.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 wherein the reactor compartment is closed and the alchlor vapor is maintained under pressure therein.
Claim 4
Dependent Claim
23 words
Apparatus according to claim 1 wherein the second-mentioned passageway communicates with the electrolysis compartment above the level of the molten metal cathode therein.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 2 and having a filter unit through which the molten metal passes after leaving the pumping chamber and before entering the reactor compartment.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |