DE529602C - Manufacture of aluminum fluoride - Google Patents
Manufacture of aluminum fluorideInfo
- Publication number
- DE529602C DE529602C DEI36636D DEI0036636D DE529602C DE 529602 C DE529602 C DE 529602C DE I36636 D DEI36636 D DE I36636D DE I0036636 D DEI0036636 D DE I0036636D DE 529602 C DE529602 C DE 529602C
- Authority
- DE
- Germany
- Prior art keywords
- aluminum fluoride
- manufacture
- rotary kiln
- fluoride
- 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
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
Description
Herstellung von Aluminiumfluorid Die Gewinnung von wasserfreiem Aluminiumfluorid aus Aluminiumoxyd bzw. Tonerdehydrat und wäßriger Flußsäure geschah bisher in zwei Arbeitsgängen: z. Abscheidung des in Wasser nicht merklich löslichen Hydrats 2 Al F3 # 7 H2 O, gewonnen durch Verdampfen verdünnter Aluminiumfluoridlösungen oder durch Eintragen von Aluminiumoxyd oder Tonerdehydrat in konzentrierte Flußsäure.Production of aluminum fluoride The production of anhydrous aluminum fluoride aluminum oxide or alumina hydrate and aqueous hydrofluoric acid has so far been done in two ways Operations: z. Separation of the hydrate 2 Al, which is not noticeably soluble in water F3 # 7 H2 O, obtained by evaporating dilute aluminum fluoride solutions or by adding aluminum oxide or alumina hydrate to concentrated hydrofluoric acid.
2. Calcination dieses Hydrats.2. Calcination of this hydrate.
Aus verdünnteren Lösungen hergestellt, stellt dieses Hydrat eine schleimige, schlecht filtrierbare Masse dar, während das aus konzentrierteren Lösungen abgeschiedene .einen äußerst harten Kuchen bildet, der zwecks Calcination vorher aus den Kristallisationsgefäßen durch besondere mechanische Vorrichtungen herausgebrochen und zerkleinert werden muß.Made from more dilute solutions, this hydrate provides a slimy, poorly filterable mass, while that separated from more concentrated solutions . forms an extremely hard cake, which is first removed from the crystallization vessels for calcination be broken out and crushed by special mechanical devices got to.
Es zeigte sich nun, daß man diese fabrikatorischen Schwierigkeiten überwinden und nicht unerheblichen Aufwand an Energie sparen kann, wenn man wäßrige, zweckmäßig konzentrierte Lösungen von Aluminiumfluorid im Drehofen unmittelbar nacheinander in einem Arbeitsgang verdampft und calciniert.It now became apparent that these manufacturing difficulties could be overcome overcome and save a considerable amount of energy if you use aqueous, expediently concentrated solutions of aluminum fluoride in the rotary kiln immediately one after the other evaporated and calcined in one operation.
Das Verfahren stellt wirtschaftlich einen Fortschritt zezenüber den bisherig-en Arbeitsmethoden dar, da es gestattet, aus Aluminiumfluoridlösungen wasserfreies Aluminiumfluorid kontinuierlich zu gewinnen.The process represents a step ahead of the economy previous working methods, as it allows anhydrous from aluminum fluoride solutions To win aluminum fluoride continuously.
Beispiel 157 kg Tonerdehydrat mit einem Gehalt von 65% A12 03 werden in 2¢o kg 50% Flußsäure eingetragen. Die entstehende Lösung wird unmittelbar im. einen mit Innenbeheizung versehenen Drehoffen langsam abgelassen; sie verläßt ihn in bröckligen, fast wasserfreien Stücken.Example 157 kg of alumina hydrate with an A12 03 content of 65% are used entered in 2 o kg of 50% hydrofluoric acid. The resulting solution is immediately im. a rotary kiln with internal heating was slowly drained; she leaves him in crumbly, almost anhydrous pieces.
Die Größe der Flamme im Drehofen wird so geregelt, daß das den Drehofen verlassende Aluminiumfluorid eine Temperatur von 20o bis q.oo° C hat.The size of the flame in the rotary kiln is regulated so that the rotary kiln leaving aluminum fluoride has a temperature of 20o to q.oo ° C.
Das so gewonnene Aluminiumfluorid hat einen Fluorgehalt von etwa 630/0 (der handelsübliche Fluorgehalt von Aluminiumfluorid beträgt nur 56%) und einen Gehalt von etwa I % Wasser.The aluminum fluoride obtained in this way has a fluorine content of about 630/0 (the commercial fluorine content of aluminum fluoride is only 56%) and one Content of about 1% water.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI36636D DE529602C (en) | 1929-01-04 | 1929-01-04 | Manufacture of aluminum fluoride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI36636D DE529602C (en) | 1929-01-04 | 1929-01-04 | Manufacture of aluminum fluoride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE529602C true DE529602C (en) | 1931-07-15 |
Family
ID=7189301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEI36636D Expired DE529602C (en) | 1929-01-04 | 1929-01-04 | Manufacture of aluminum fluoride |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE529602C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE752730C (en) * | 1940-03-09 | 1952-08-28 | Ig Farbenindustrie Ag | Process for the production of aluminum fluoride |
| US4238469A (en) | 1978-04-12 | 1980-12-09 | Chemie Linz Aktiengesellschaft | Process for the manufacture of aluminum fluoride |
-
1929
- 1929-01-04 DE DEI36636D patent/DE529602C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE752730C (en) * | 1940-03-09 | 1952-08-28 | Ig Farbenindustrie Ag | Process for the production of aluminum fluoride |
| US4238469A (en) | 1978-04-12 | 1980-12-09 | Chemie Linz Aktiengesellschaft | Process for the manufacture of aluminum fluoride |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB467843A (en) | Method of separating fluorine and aluminium from solutions obtained by treatment of raw phosphate with acids | |
| DE529602C (en) | Manufacture of aluminum fluoride | |
| GB484921A (en) | Improvements in or relating to the manufacture of ammonium sulphate | |
| US2157260A (en) | Process for the preparation of potassium nitrate | |
| DE641300C (en) | Process for the production of alumina from an ammonium alum | |
| DE552007C (en) | Manufacture of potassium nitrate from aluminum nitrate and potassium chloride | |
| DE844388C (en) | Chemical process for the production of high-gloss surfaces on aluminum and aluminum alloys | |
| DE873690C (en) | Process for the production of aluminum fluoride from ammonium fluoride | |
| US2907633A (en) | Process for producing aluminum salts | |
| US1692692A (en) | Process for the manufacture of sulphate of aluminum | |
| SU55775A1 (en) | The method of obtaining aluminum fluoride | |
| DE390395C (en) | Process for the preparation of potassium nitrate and calcium chloride from potassium chloride and calcium nitrate | |
| US1914178A (en) | Basic aluminum sulphate compound | |
| DE511885C (en) | Process for the preparation of formamide | |
| AT314474B (en) | Process for the production of aluminum fluoride and cryolite | |
| SU51940A1 (en) | Method for producing aluminum fluoride and cryolitized alumina from alunite and fluorspar | |
| DE512639C (en) | Production of concentrated nitric acid | |
| DE715906C (en) | Process for the production of potassium sulfate from syngenite | |
| DE499211C (en) | Production of alkali fluoride-aluminum fluoride double compounds | |
| GB423601A (en) | Improvements in and relating to the production of aluminium fluoride | |
| DE708821C (en) | Process for the production of concentrated sulfur dioxide | |
| DE528677C (en) | Process for the production of potassium nitrate by reacting potassium chloride with nitrates | |
| DE503112C (en) | Manufacture of anhydrous aluminum fluoride | |
| DE366969C (en) | Process for the production of sodium nitrate | |
| DE883493C (en) | Process for producing a rubber filler from aluminum sulfate |