DE499211C - Production of alkali fluoride-aluminum fluoride double compounds - Google Patents
Production of alkali fluoride-aluminum fluoride double compoundsInfo
- Publication number
- DE499211C DE499211C DER67803D DER0067803D DE499211C DE 499211 C DE499211 C DE 499211C DE R67803 D DER67803 D DE R67803D DE R0067803 D DER0067803 D DE R0067803D DE 499211 C DE499211 C DE 499211C
- Authority
- DE
- Germany
- Prior art keywords
- alkali
- fluoride
- production
- double compounds
- aluminum
- 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
- 239000003513 alkali Substances 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 150000001875 compounds Chemical class 0.000 title description 6
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 title description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 6
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 6
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 6
- APURLPHDHPNUFL-UHFFFAOYSA-M fluoroaluminum Chemical compound [Al]F APURLPHDHPNUFL-UHFFFAOYSA-M 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 230000001376 precipitating effect Effects 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910001610 cryolite Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 2
- -1 B. cryolite Chemical class 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 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)
Description
Herstellung von Alkalifluorid-Aluminiumfluorid-Doppelverbindungen Es ist bekannt, Fluoralkali-Fluoraluminium-Doppelverbindungien, z. B. Kryolith, aus Fluoraluminiumlösungen in der Weise herzustellen, daß man die Lösung von Fluoraluminium mit der zur Bildung der Doppelverbindung nötigen Menge Fluoralkali versetzt. An Stelle von Fluoralkali 'kann man auch ein Gemisch von Fluorwasserstoff und Alkalihydroxyd bzw. Alkalicarbonat benutzen, aus denen sich in der wässerigen Lösung Fluoralkäli bildet. Versetzt man, wie ebenfalls bekannt. eine im wesentlichen neutrale Fluoraluminiumlösung nur mit Alkalihydroxyd oder Alkalicarbonat, so bildet sich bei Verwendung dein Fällungsmittels in entsprechender Menge neben der Doppelverbindung Tonerde, z. B. nach folgender Gleichung 2 A12F,; -f-- 6 NaOH A12F,; 6 NaF + A1203 + 3 H20. Der in diesem Falle entstehende Niederschlag besteht aus einem Gemisch von etwa 8oOö Kryolith und 2o0 o Tonerde und ist bei Verwendung von nicht ganz kieselsäurefreien Rohstoffen durch ausgefällte Kieselsäure verunreinigt.Production of alkali fluoride-aluminum fluoride double compounds It is known to use fluoroalkali fluoroaluminum double compounds, e.g. B. cryolite, to prepare from fluoroaluminium solutions in such a way that the solution of fluoroaluminum mixed with the amount of fluoroalkali necessary for the formation of the double compound. At Instead of fluoroalkali, a mixture of hydrogen fluoride and alkali hydroxide can also be used or use alkali carbonate, from which fluoroalkäli are formed in the aqueous solution forms. Relocated, as is also known. a substantially neutral fluoroaluminum solution only with alkali hydroxide or alkali carbonate, then your precipitant is formed when you use it in an appropriate amount in addition to the double compound alumina, z. B. after the following Equation 2 A12F ,; -f- 6 NaOH A12F ,; 6 NaF + A1203 + 3 H20. The one in this case The resulting precipitate consists of a mixture of about 8oOö cryolite and 2o0 o Alumina and is by using raw materials that are not completely free from silica precipitated silica contaminated.
Es hat sich gezeigt, daß man aus im wesentlichen neutralen Fluoralumi:niumlösungen mit Alkalihydroxyd bzw. All:alicarbonat allein kieselsäurefreie bzw. kieselsäurearme Mischungen der Doppelverbindungen mit Tonerde ausfällen kann, wienn man bei der Fällung einen kleinen überschuß an Allzalicarbonat bzw. Alkalihydroxyd verwendet, wodurch die Kieselsäure gelöst wird, so daß man sehr reine Niederschläge erhält. Man kann auch so vorgehen, daß man dien kieselsäurehaltigen Niederschlag mit geringen Mengen Alkalilauge oder Alkalicarbonatlösung behandelt.It has been shown that essentially neutral fluoroaluminium solutions with alkali hydroxide or all: alicarbonate alone silicic acid-free or low-silicic acid Mixtures of the double compounds with alumina can precipitate, one wienn at the Precipitation a small excess of alkali metal carbonate or alkali hydroxide is used, whereby the silica is dissolved, so that very pure precipitates are obtained. One can also proceed in such a way that one dien the silicic acid-containing precipitate with little Treated quantities of alkali lye or alkali carbonate solution.
Man erhält in der beschriebenen Weise aus einer Fluoraluinniumlösung einen Nederschlag# von großer Reinheit, so daß das erhaltene Gemisch von Kryolith und Tonerde für die Verwendung in der Ahiminiumindustrie vorzüglich geeignet ist.It is obtained in the manner described from a fluoroaluminium solution a Nederschlag # of great purity, so that the resulting mixture of cryolite and clay is eminently suitable for use in the aluminum industry.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER67803D DE499211C (en) | 1926-06-08 | 1926-06-08 | Production of alkali fluoride-aluminum fluoride double compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER67803D DE499211C (en) | 1926-06-08 | 1926-06-08 | Production of alkali fluoride-aluminum fluoride double compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE499211C true DE499211C (en) | 1930-06-04 |
Family
ID=7413229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER67803D Expired DE499211C (en) | 1926-06-08 | 1926-06-08 | Production of alkali fluoride-aluminum fluoride double compounds |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE499211C (en) |
-
1926
- 1926-06-08 DE DER67803D patent/DE499211C/en not_active Expired
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