US3887681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of gallium from alkaline liquors using acetylacetone
Assignee: Rio Tinto Alcan Inc
•
Filing: 1972-10-05
•
Granted: 1975-06-03
•
Expires: 1992-10-05
Abstract
Abstract A process for separating gallium which is dissolved in an aqueous alkaline solution comprising the steps of adding to the solution a complexing agent which is a compound of the Beta diacetone type, and extracting the complex by means of an organic solvent.
Inventors
- 👤 La Breteque Pierre De
- 👤 Marc Beerli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:29
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/306; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
A PROCESS FOR SEPARATING GALLIUM FOR SOLUTION WHICH COMPRISES ADDING TO AN AQUEOUS SOLUTION OF ALUMINATE IN WHICH GALLIUM IS DISSOLVED, AND CONTAINING BETWEEN ABOUT 100 GRAMS PER LITER AND ABOUT 180 GRAMS PER LITER OF NA2O, ACETYLACETONE AS A COMPLEXING AGENT, AND EXTRACTING THE COMPLEX BY MEANS OF AN ORGANIC SOLVENT WHICH IS SUBSTANTIALLY IMMISCIBLE WITH WATER.
Claim 2
Dependent Claim
58 words
A PROCESS FOR SEPARATING GALLIUM FOR SOLUTION WHICH COMPRISES ADDING TO AN AQUEOUS SOLUTION OF ALUMINATE IN WHICH GALLIUM IS DISSOLVED, AND CONTAINING BETWEEN ABOUT 100 GRAMS PER LITER AND ABOUT 180 GRAMS PER LITER OF NA2O, ACETYLACETONE AS A COMPLEXING AGENT, AND EXTRACTING THE COMPLEX BY MEANS OF AN ORGANIC SOLVENT WHICH IS SUBSTANTIALLY IMMISCIBLE WITH WATER.
Claim 3
Dependent Claim
58 words
A process for separating gallium from solution which comprises adding to an aqueous solution of aluminate in which gallium is dissolved, and containing between about 100 grams per liter and about 180 grams per liter of Na2O, acetylacetone as a complexing agent, and extracting the complex by means of an organic solvent which is substantially immiscible with water.
Claim 4
Dependent Claim
58 words
A process for separating gallium from solution which comprises adding to an aqueous solution of aluminate in which gallium is dissolved, and containing between about 100 grams per liter and about 180 grams per liter of Na2O, acetylacetone as a complexing agent, and extracting the complex by means of an organic solvent which is substantially immiscible with water.
Claim 5
Dependent Claim
33 words
A process according to claIm 1, in which the complexing and the extraction are performed simultaneously by treating the aqueous alkaline solution with a mixture formed by the solvent and the complexing agent.
Claim 6
Dependent Claim
17 words
A process according to claim 1, in which the solvent is isobutanol or one of its homologues.
References Cited (Backward Citations)
US3254948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |