GB1307993A - Manufacture of aluminium fluoride - Google Patents
Manufacture of aluminium fluorideInfo
- Publication number
- GB1307993A GB1307993A GB1307993DA GB1307993A GB 1307993 A GB1307993 A GB 1307993A GB 1307993D A GB1307993D A GB 1307993DA GB 1307993 A GB1307993 A GB 1307993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium fluoride
- alf
- gases
- hydrated
- 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
1307993 Aluminium fluoride ALBRIGHT & WILSON Ltd 20 March 1970 [25 March 1969] 15616/69 Heading C1A Aluminium fluoride is produced by scrubbing gases, which contain volatile fluorine compounds, with an aqueous solution containing aluminium fluoride or aluminium fluosilicate, precipitating silica therefrom by the addition of Al(OH) 3 at elevated temperature, cooling to precipitate hydrated AlF 3 and filtering or centrifuging to remove mother liquors. The hydrated AlF 3 may be calcined to obtain anhydrous aluminium fluoride. The gases which contain volatile fluorine compounds may be evolved as by-products in the-concentration of wet process phosphoric acid. The scrubbing of gases is preferably carried out at temps. in the range 23-95‹ C. while precipitation of silica is achieved at a temperature of not less than 100‹ C. and the precipitation of aluminium fluoride at not more than 92‹ C. by seeding with hydrated AlF 3 crystals. Part of the scrubber liquor may be recycled, without prior treatment, after dilution with part of the mother liquor from the crystallization of AlF 3 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1561669 | 1969-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1307993A true GB1307993A (en) | 1973-02-21 |
Family
ID=10062359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1307993D Expired GB1307993A (en) | 1969-03-25 | 1969-03-25 | Manufacture of aluminium fluoride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1307993A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114180609A (en) * | 2021-12-10 | 2022-03-15 | 云南云天化氟化学有限公司 | Aluminum fluoride standby production line and process flow |
-
1969
- 1969-03-25 GB GB1307993D patent/GB1307993A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114180609A (en) * | 2021-12-10 | 2022-03-15 | 云南云天化氟化学有限公司 | Aluminum fluoride standby production line and process flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 434A | Offer to surrender (sect. 34/1949) | ||
| 4333 | Proceeding terminated by surrender of patent under section 34 patents act 1949 | ||
| 434I | Order made revoking the undermentioned patent (sect. 34/1949) |