ATE252T1 - PROCESS FOR THE PRODUCTION OF CRYSTALLINE CRYOLITH. - Google Patents
PROCESS FOR THE PRODUCTION OF CRYSTALLINE CRYOLITH.Info
- Publication number
- ATE252T1 ATE252T1 AT79102025T AT79102025T ATE252T1 AT E252 T1 ATE252 T1 AT E252T1 AT 79102025 T AT79102025 T AT 79102025T AT 79102025 T AT79102025 T AT 79102025T AT E252 T1 ATE252 T1 AT E252T1
- Authority
- AT
- Austria
- Prior art keywords
- aluminum
- crystalline
- sodium
- fluoride
- sodium fluoride
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 abstract 6
- 235000013024 sodium fluoride Nutrition 0.000 abstract 3
- 239000011775 sodium fluoride Substances 0.000 abstract 3
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 abstract 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 229910001610 cryolite Inorganic materials 0.000 abstract 2
- 239000011734 sodium Substances 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000011541 reaction mixture Substances 0.000 abstract 1
- 230000035484 reaction time Effects 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- C01F7/54—Double compounds containing both aluminium and alkali metals or alkaline-earth metals
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
An improved process for the preparation of crystalline cryolite having a molar ratio Na:Al of 2.9:1 to 3.0:1, by reacting aqueous solutions of aluminum fluoride with at least a stoichiometric amount of sodium fluoride in aqueous solution, while heating, in the presence of cryolite seed crystals, wherein the sodium fluoride is used in an amount of 3.2 to 3.5 moles of sodium per mole of aluminum, the aluminum fluoride concentration being from 15 to 250 g./l., the sodium fluoride concentration being from 30 to 42 g./l., the reaction temperature being from 85 DEG to 100 DEG C., the reaction time from 0.5 to 3 hours and the pH value in the reaction mixture from 5 to 8, to provide an end product having an adsorbed water content of 8% or less.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782831095 DE2831095A1 (en) | 1978-07-14 | 1978-07-14 | METHOD FOR PRODUCING CRYSTALLINE CRYOLITE |
| EP79102025A EP0007434B1 (en) | 1978-07-14 | 1979-06-19 | Process for producing crystalline cryolite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE252T1 true ATE252T1 (en) | 1981-10-15 |
Family
ID=6044435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT79102025T ATE252T1 (en) | 1978-07-14 | 1979-06-19 | PROCESS FOR THE PRODUCTION OF CRYSTALLINE CRYOLITH. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4226842A (en) |
| EP (1) | EP0007434B1 (en) |
| JP (1) | JPS5951491B2 (en) |
| AT (1) | ATE252T1 (en) |
| DE (2) | DE2831095A1 (en) |
| ZA (1) | ZA793457B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2135413C1 (en) * | 1998-04-23 | 1999-08-27 | Карнаухов Евгений Николаевич | Method of preparing granular blend for introducing aluminium electrolyzers into electrolyte |
| KR20010097375A (en) * | 2000-04-21 | 2001-11-08 | 이희창 | The method for making goods to use instead for cryolite |
| RU2193526C2 (en) * | 2000-07-11 | 2002-11-27 | Открытое акционерное общество "Сибирско-Уральская Алюминевая компания" | Cryolite production process |
| CN109626407B (en) * | 2019-01-17 | 2021-03-02 | 云南云天化氟化学有限公司 | Aluminum fluoride mother liquor regeneration cryolite apparatus for producing |
| CN114684835B (en) * | 2022-03-18 | 2023-03-21 | 中南大学 | Method for preparing aluminum fluoride products through combined treatment of aluminum industry solid waste |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2492650A (en) * | 1944-09-08 | 1949-12-27 | Aluminum Co Of America | Double fluoride of sodium and aluminum and production thereof |
| US3128151A (en) * | 1959-10-30 | 1964-04-07 | I C P M Ind Chimiche Porto Mar | Process for producing a sodium fluoaluminate composition having predetermined naf/alf3 ratio |
| US3493330A (en) * | 1966-11-22 | 1970-02-03 | Reynolds Metals Co | Beneficiation of cryolite material |
| US3485579A (en) * | 1966-11-22 | 1969-12-23 | Reynolds Metals Co | Beneficiation of cryolite material |
| US3493331A (en) * | 1966-11-22 | 1970-02-03 | Reynolds Metals Co | Production of cryolite material |
| US3486845A (en) * | 1966-11-22 | 1969-12-30 | Reynolds Metals Co | Beneficiation of cryolite material |
| US3656894A (en) * | 1970-05-08 | 1972-04-18 | Central Glass Co Ltd | Process for the production of high quality synthetic cryolite |
| US3704092A (en) * | 1970-08-07 | 1972-11-28 | Reynolds Metals Co | Manufacture of naf/aif3 double salt |
| AT305209B (en) * | 1971-02-24 | 1973-02-12 | Chemie Linz Ag | Process for making cryolite |
| US3897543A (en) * | 1972-06-06 | 1975-07-29 | Kali Chemie Ag | Process for making crystalline cryolite of high bulk density |
-
1978
- 1978-07-14 DE DE19782831095 patent/DE2831095A1/en not_active Withdrawn
-
1979
- 1979-06-19 EP EP79102025A patent/EP0007434B1/en not_active Expired
- 1979-06-19 DE DE7979102025T patent/DE2961131D1/en not_active Expired
- 1979-06-19 AT AT79102025T patent/ATE252T1/en not_active IP Right Cessation
- 1979-07-10 ZA ZA793457A patent/ZA793457B/en unknown
- 1979-07-11 US US06/056,496 patent/US4226842A/en not_active Expired - Lifetime
- 1979-07-13 JP JP54088333A patent/JPS5951491B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4226842A (en) | 1980-10-07 |
| JPS5951491B2 (en) | 1984-12-14 |
| EP0007434B1 (en) | 1981-09-30 |
| DE2831095A1 (en) | 1980-01-24 |
| ZA793457B (en) | 1980-07-30 |
| EP0007434A1 (en) | 1980-02-06 |
| JPS5515992A (en) | 1980-02-04 |
| DE2961131D1 (en) | 1981-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| REN | Ceased due to non-payment of the annual fee |