US2829963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering nickel from nickel and iron bearing ores
Assignee: Bethlehem Steel Corp
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Filing: 1955-04-22
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Granted: 1958-04-08
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Expires: 1975-04-22
Abstract
No abstract record available.
Inventors
- 👤 Hixson Arthur Norman
- 👤 Conrad B Bare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:06
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0407; C22B23/0446
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR REMOVING NICKEL FROM AN ORE CONTAINING IRON AND NICKEL WHICH COMPRISES THE STEPS OF SUBJECTING THE ORE TO A REDUCING ROAST, MIXING THE REDUCED ORE WITH AN AQUEOUS AMMONIACAL SOLUTION OF AN AMMONIUM SALT OF AN ACID OF THE GROUP CONSISTING OF CARBONIC, SULPHURIC, NITRIC AND HYDROCHLORIC ACIDS IN AMOUNT SUFFICIENT TO DAMPEN THE ORE BUT INSUFFICIENT TO CAKE THE ORE, PASSING A GAS CONTAINING OXYGEN AND AMMONIA INTO INTIMATE CONTACT WITH THE DAMPENED ORE, AND LEACHING THE THUS TREATED ORE WITH AN AMMONICAL SOLUTION OF AN AMMONIUM SALT OF AN ACID OF THE GROUP CONSISTING OF CARBONIC, SULPHURIC, NITRIC AND HYDROCHLORIC ACIDS.
Claim 2
Dependent Claim
106 words
A PROCESS FOR REMOVING NICKEL FROM AN ORE CONTAINING IRON AND NICKEL WHICH COMPRISES THE STEPS OF SUBJECTING THE ORE TO A REDUCING ROAST, MIXING THE REDUCED ORE WITH AN AQUEOUS AMMONIACAL SOLUTION OF AN AMMONIUM SALT OF AN ACID OF THE GROUP CONSISTING OF CARBONIC, SULPHURIC, NITRIC AND HYDROCHLORIC ACIDS IN AMOUNT SUFFICIENT TO DAMPEN THE ORE BUT INSUFFICIENT TO CAKE THE ORE, PASSING A GAS CONTAINING OXYGEN AND AMMONIA INTO INTIMATE CONTACT WITH THE DAMPENED ORE, AND LEACHING THE THUS TREATED ORE WITH AN AMMONICAL SOLUTION OF AN AMMONIUM SALT OF AN ACID OF THE GROUP CONSISTING OF CARBONIC, SULPHURIC, NITRIC AND HYDROCHLORIC ACIDS.
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |