GB647216A - Improvements in or relating to the production of aluminium fluoride from calcium fluoride - Google Patents
Improvements in or relating to the production of aluminium fluoride from calcium fluorideInfo
- Publication number
- GB647216A GB647216A GB27735/47A GB2773547A GB647216A GB 647216 A GB647216 A GB 647216A GB 27735/47 A GB27735/47 A GB 27735/47A GB 2773547 A GB2773547 A GB 2773547A GB 647216 A GB647216 A GB 647216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- fluoride
- precipitate
- boiling point
- aluminium
- 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
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Aluminium fluoride is produced by reacting the solution of hydrofluoboric acid produced by decomposing calcium fluoride (fluorspar) with an aqueous solution of sulphuric acid and boric acid at 60 DEG C. to the boiling point, with at least one substance which forms an at least difficulty soluble sulphate, separating the precipitate, and treating the solution with aluminium hydroxide, e.g. at 60 DEG C. to the boiling point, drying the precipitate up to 100 DEG C., and finally heating to 300-500 DEG C. The sulphate ions may be partly precipitated with lime, and after separation of calcium sulphate, the rest with barium carbonate at 60 DEG C. to the boiling point of the solution, or with lead carbonate or benzidine at room temperature. Benzidine may, however, be used to precipitate all of the sulphate ions. Any lead in solution may be precipitated with hydrogen sulphide, the dissolved gas being later removed by blowing in air. The precipitation of the aluminium fluoride may be seeded. Specifications 647,217 and 647,218 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH647216X | 1946-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB647216A true GB647216A (en) | 1950-12-06 |
Family
ID=4525857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27735/47A Expired GB647216A (en) | 1946-10-17 | 1947-10-16 | Improvements in or relating to the production of aluminium fluoride from calcium fluoride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB647216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995001460A1 (en) * | 1993-07-02 | 1995-01-12 | The Broken Hill Proprietary Company Limited | Method of extracting fluorine from minerals or mineral species |
-
1947
- 1947-10-16 GB GB27735/47A patent/GB647216A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995001460A1 (en) * | 1993-07-02 | 1995-01-12 | The Broken Hill Proprietary Company Limited | Method of extracting fluorine from minerals or mineral species |
| US5830424A (en) * | 1993-07-02 | 1998-11-03 | The Broken Hill Proprietary Company Limited | Method of extracting fluorine from minerals or mineral species |
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