GB902754A - Process for the separation of rare earths - Google Patents
Process for the separation of rare earthsInfo
- Publication number
- GB902754A GB902754A GB3700461A GB3700461A GB902754A GB 902754 A GB902754 A GB 902754A GB 3700461 A GB3700461 A GB 3700461A GB 3700461 A GB3700461 A GB 3700461A GB 902754 A GB902754 A GB 902754A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rare earths
- divalent
- europium
- trivalent
- salts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B59/00—Obtaining rare earth metals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Samarium and/or europium and/or ytterbium are separated in the presence of other rare earths in a process which comprises treating, in a non oxidizing atmosphere, an aqueous solution containing a divalent salt, for example the chloride, of at least one of the above three rare earths with ammonia, in the presence of sulphate ions, which may be added as ammonium sulphate, to form an alkaline suspension, the trivalent rare earths being precipitated as hydroxides and the divalent rare earths as sulphates, acidifying the suspension, for example with hydrochloric acid, to dissolve the trivalent rare earths, and then separating the divalent rare earth hydroxides precipitate from the solution. The divalent salts may be prepared by reducing the trivalent salts by electrolysis or with sodium vapour. If it is desired to recover europium by itself, the reduction may be effected with zinc amalgam, which reduces the europium only.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR770118 | 1958-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB902754A true GB902754A (en) | 1962-08-09 |
Family
ID=8706967
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2380259A Expired GB902753A (en) | 1958-07-11 | 1959-07-10 | Process for the separation of rare earths |
| GB3700461A Expired GB902754A (en) | 1958-07-11 | 1959-07-10 | Process for the separation of rare earths |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2380259A Expired GB902753A (en) | 1958-07-11 | 1959-07-10 | Process for the separation of rare earths |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB902753A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3453069A (en) * | 1966-02-04 | 1969-07-01 | Thorium Ltd | Separation of rare earth elements |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1489788A (en) * | 1966-06-13 | 1967-07-28 | Pechiney Saint Gobain | Separation of high purity ytterbium |
-
1959
- 1959-07-10 GB GB2380259A patent/GB902753A/en not_active Expired
- 1959-07-10 GB GB3700461A patent/GB902754A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3453069A (en) * | 1966-02-04 | 1969-07-01 | Thorium Ltd | Separation of rare earth elements |
Also Published As
| Publication number | Publication date |
|---|---|
| GB902753A (en) | 1962-08-09 |
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