US3043678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reclamation of metallic values from aluminous dross
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1959-08-12
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Granted: 1962-07-10
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Expires: 1979-08-12
Abstract
No abstract record available.
Inventors
- 👤 John W Lowry
- 👤 Warren S Peterson
- 👤 Thomas W F Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:17
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/06; C22B21/062; C22B21/0084; C22B21/0092; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
205 words
A METHOD OF RECLAIMING METALIC VALUES FROM ALUMINOUS DROSS CONTAINING A SUBSTANTIAL AMOUNT OF LARGE LUMPS COMPRISING THE STEPS OF INTIIMATELY TUMBLING SAID ALUMINOUS DROOSSS WITH A SALT FLUX IN SOLID FORM CONSISTING OF A MIXTURE OF SODIUM CHLORIDE, POTASSIUM CHLORIDE AND A SMALL BUT EFFECTIVE AMOUNT OF A FLUORIDE CONSTITUENT ADAPTED TO STRIP OXIDE COATING FROM ALUMINUM METAL VALUES CONTAINED IN SAID ALUMINOUS SDROSSS, IN A MANER CHARACTERIZED BY DVIOLENT CASADING OF SAID ALUMINOUS DROOSS AND SALT FULX MIXTURE TO BREAK UP SAID LUMPS OF SAID ALUMINOUS DROSS SAID FLUX BEING CHARACTERIZED BY A MELTING POINT NOT GREATER THAN 1380 DDEGREES F., MELTING SAID SALLT FLUX BY APPLYING SUFFICIENT HEAT TO SAID ALUMINOUS DROSS AND SALT FLUX MIXTURE, MAINTAINING SAID MIXTURE AT A TEMPERATURE RANGING FROM 1350*. TO 1500 * F., AND THEN STRIPPING THE OXIDES FROM SAID DDROSS BY THE ACTION OF SAID MLOTEN FLUX TO RELEASE MOLTEN ALUMINOUS VALUES WHILE TUMBLING SAID MIXTURE IN A MANER SCHARATERIZED BY A GENTLE ROLLING ACTION, SAID VALUES AGGLOMERATING IN A MOLTEN METAL POOL AND SAID MOLTN FLUX BEING PRESENT IN AM AMOUNT TO ALSO PROVIDE A PROTECTIVE COVERING FOR SAID MOLTEN ALUMINOUS VALUES THEREBY SUBSTANTIALLY PREVENTING LOSSES OF ALUMINUM METAL DDUE TO OXIDATION AND BURNING.
References Cited (Backward Citations)
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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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |