US3907966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel extraction and stripping using oximes and ammoniacal carbonate solutions
Assignee: Kennecott Utah Copper LLC
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Filing: 1973-07-19
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Granted: 1975-09-23
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Expires: 1993-07-19
Abstract
Abstract Ammoniacal solutions containing nickel and other metal values are adjusted to low NH3 concentration and treated by liquidliquid ion exchange extraction with an oxime organic extractant and then the loaded organic extractant is stripped with a highly concentrated ammonium salt solution to yield a strip concentrate from which nickel or nickel oxide is recoverable without electrolytic treatment.
Inventors
- 👤 Roald R Skarbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:09
CPC Classifications
C; C01; C01G; C01G53/00; C01G53/01; C01G3/00; C01G3/003; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461; C22B3/00; C22B3/20; C22B3/26; C22B3/30; C25; C25C; C25C1/00; C25C1/06; C25C1/08; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
NICKEL RECOVERRRY PROCESS COMPRISING PROVIDING AN AQUEOUS FEED PHASE COMPRISING NICKEL METAL VALUES IN AMMONIACAL SOLUTION AND ADJUSTING THE AMMONIA CONCENTRATION THEREIN TO 20-60 GRAMS PER LITER, CONTACTING SAID FEED WITH AN IMMISCIBLE ORGANIC CHELATING, ION EXCHANGE PHASE COMPRISING A BENZOPHENOXIME TO EFFECT HYDROGEN ION-METAL ION EXCHANGE BETWEEN THE TWO PHASE AND LOADING THE ORGANIC PHASE WITH NICKEL ION, CONTACTING SAID LOADED ORGANIC PHASE WITH AN AMMONIA CONTAINING AQUEOUS STRIPPING PHASE TO EFFECT STRIPPING OF NICKEL IONS FROM SAID LOADED ORGANIC PHASE INTO SAID AQUEOUS STRIPPING PHASE, AND RECOVERING NICKEL VALUES FROM SAID AQEOUS STRIPPING PHASE AND WHEREIN SAID BENZOPHENOXIME HAS THE FORMULA:
Claim 2
Dependent Claim
103 words
NICKEL RECOVERRRY PROCESS COMPRISING PROVIDING AN AQUEOUS FEED PHASE COMPRISING NICKEL METAL VALUES IN AMMONIACAL SOLUTION AND ADJUSTING THE AMMONIA CONCENTRATION THEREIN TO 20-60 GRAMS PER LITER, CONTACTING SAID FEED WITH AN IMMISCIBLE ORGANIC CHELATING, ION EXCHANGE PHASE COMPRISING A BENZOPHENOXIME TO EFFECT HYDROGEN ION-METAL ION EXCHANGE BETWEEN THE TWO PHASE AND LOADING THE ORGANIC PHASE WITH NICKEL ION, CONTACTING SAID LOADED ORGANIC PHASE WITH AN AMMONIA CONTAINING AQUEOUS STRIPPING PHASE TO EFFECT STRIPPING OF NICKEL IONS FROM SAID LOADED ORGANIC PHASE INTO SAID AQUEOUS STRIPPING PHASE, AND RECOVERING NICKEL VALUES FROM SAID AQEOUS STRIPPING PHASE AND WHEREIN SAID BENZOPHENOXIME HAS THE FORMULA:
Claim 3
Dependent Claim
18 words
Nickel recovery process in accordance with claim 1 wherein the organic comprises a mixture of a. said benzophenoxime
Claim 4
Dependent Claim
14 words
Nickel recovery process in accordance with claim 2 wherein the benzophenoxime comprises 2 hydroxy-4-nonyl-benzophenoxime.
Claim 5
Dependent Claim
15 words
Nickel recovery process in accordance with claim 3 wherein the oxime comprises 5, 8-diethyl-7-hydroxy-6-dodecanone oxime.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |