Patent US3637372A successfully refreshed from Google Patents.
US3637372A
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Method for recovering nickel
Assignee: PIERRE F TORD
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Filing: 1969-11-06
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Granted: 1972-01-25
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Expires: 1989-11-06
Abstract
Abstract The method provides the recovery of at least nickel from ores or other materials containing it possibly with copper, by treating the ores with a cupric chloride solution and an alkaline or alkaline earth chloride, and then separating the nickel from the said solution by cementing with iron.
Inventors
- 👤 Yoland P P Mayor
- 👤 Pierre F Tord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:22
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B15/00; C22B15/0063; C22B15/0065; C22B15/0067; C22B23/0407; C22B23/0415; C22B23/0423; C22B3/00; C22B3/04; C22B3/06; C22B3/10; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A process according to claim 1 in which at least a part of the copper hydroxychloride separated is treated with hydrochloric acid, and recycling the copper chloride solution formed into the solution treating of the ores.
Claim 2
Dependent Claim
117 words
A process for recovering nickel and optionally copper from ores containing the same comprising reducing the said ores with a reducing agent, treating the reduced ore with a solution of cupric chloride in saturated aqueous sodium chloride solution to extract nickel and optionally copper therefrom, oxidizing the resulting solution and adding an alkaline reactant thereto to precipitate copper hydroxychloride, removing solids including copper hydroxychloride from the resulting solution, separating nickel from the resulting solution by cementation with iron, suspending the solids including copper hydroxychloride in a saturated aqueous sodium chloride solution, adding hydrochloric acid to the suspension to dissolve the copper hydroxy chloride as cupric chloride and recycling the dissolved cupric chloride solution to the extraction step.
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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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |