DE354328C - Process for the production of aluminum sulfate from alumina hydrate - Google Patents

Process for the production of aluminum sulfate from alumina hydrate

Info

Publication number
DE354328C
DE354328C DE1921354328D DE354328DD DE354328C DE 354328 C DE354328 C DE 354328C DE 1921354328 D DE1921354328 D DE 1921354328D DE 354328D D DE354328D D DE 354328DD DE 354328 C DE354328 C DE 354328C
Authority
DE
Germany
Prior art keywords
alumina hydrate
production
aluminum sulfate
aluminum
ammonium sulfate
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
Application number
DE1921354328D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILHELM FULDA DR
Vereinigte Aluminium Werke AG
Original Assignee
WILHELM FULDA DR
Vereinigte Aluminium Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WILHELM FULDA DR, Vereinigte Aluminium Werke AG filed Critical WILHELM FULDA DR
Application granted granted Critical
Publication of DE354328C publication Critical patent/DE354328C/en
Expired legal-status Critical Current

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
    • C01F7/68—Aluminium compounds containing sulfur
    • C01F7/74—Sulfates
    • C01F7/743—Preparation from silicoaluminious materials, e.g. clays or bauxite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

Die Herstellung von Aluminiumsulfat aus Tonerdehydrat geschieht gewöhnlich in der Weise, daß man das Tonerdehydrat und Schwefelsäure von bestimmter Konzentration in einem Kessel unter Erhitzen zusammenrührt, und nach vollendeter Reaktion die Aluminiumsulfatlösung in geeigneter Weise erstarren läßt, wodurch man ein kristaltwasserhaltiges Aluminiumsulfat von etwa iS Pro-ίο zent Al2 O0 erhält.The production of aluminum sulphate from alumina hydrate is usually done in such a way that the alumina hydrate and sulfuric acid of a certain concentration are stirred together in a kettle while heating, and after the reaction is complete, the aluminum sulphate solution is allowed to solidify in a suitable manner, whereby an aluminum sulphate containing crystalline water of about 1% ίο cent Al 2 O 0 receives.

Für diese Fabrikation ist Schwefelsäure nötig, die z. Z. sehr teuer ist und voraussichtlich auch in Zukunft einen hohen Preis behalten wird, da die Rohmaterialien (Pyrite) grots ßenteils aus dem Ausland bezogen werden müssen. Es wäre von wesentlichem Vorteil, wenn man das Aluminiumsulfat herstellen könnte ohne Schwefelsäure. Dazu wurde folgender Weg gefunden:For this fabrication sulfuric acid is necessary, the z. Z. is very expensive and likely will keep a high price in the future because the raw materials (pyrite) are grots Most of them have to be obtained from abroad. It would be of great advantage if the aluminum sulfate could be produced without sulfuric acid. The following was added to this Found way:

Man mischt das Tonerdehydrat mit Ammoniumsulfat und erhitzt dieses Gemisch auf etwa 350°. Dabei geht eine Reaktion
sich, die sich
drücken läßt:The alumina hydrate is mixed with ammonium sulfate and this mixture is heated to about 350 °. There is a reaction
themselves that themselves
lets press:

2Al (OH)3 + 3 (NHJ2 SO4 = Al8 (SOJ3 + 6 NH3+ 3 H2O.2Al (OH) 3 + 3 (NHJ 2 SO 4 = Al 8 (SOJ 3 + 6 NH 3 + 3 H 2 O.

Diese Reaktion wird durch UnterdruckThis reaction is caused by negative pressure

oder Überleiten von Gasen, die das gebildete Ammoniak wegnehmen, beschleunigt. Höhereor the passage of gases that remove the ammonia formed, accelerated. Higher

eine .Reaktion vor in folgender Gleichung aus-Temperatur bei der Gegenwart von Sauerstoff muß man vermeiden, weil das Ammoniak sich sonst zersetzt. — Um das Ammoniumsulfat möglichst quantitativ zu entfernen, ist auch das Überleiten von inerten Gasen vorteilhaft. Bei Darstellung von Ammoniakalaun ist letztere Operation nicht nötig.a reaction before in the following equation from temperature in the presence of oxygen one must avoid, because the ammonia otherwise decomposes. - In order to remove the ammonium sulphate as quantitatively as possible, is the passage of inert gases is also advantageous. When displaying ammonia alum the latter operation is not necessary.

Das gebildete Aluminiumsulfat kann man entweder als solches verwenden oder in Wasser auflösen, um das kristallwasserhaltige Salz zu bekommen. — Das Ammoniak kann man in bekannter Weise in Wasser auffangen un'd mit Kohlensäure sättigen und das entstandene Ammoniumkarbonat mit Gips in Ammonsulfat umsetzen.The aluminum sulfate formed can either be used as such or in Dissolve water to get the crystal water containing salt. - The ammonia can one collects in water in a known manner and saturates with carbonic acid and the resulting Convert ammonium carbonate with gypsum into ammonium sulfate.

Das gebildete Ammoniumsulfat, das man zunächst als Lösung erhält, wird bis zur Kristallisation eingedampft. Das Salz wird zentrifugiert und wieder mit neuem Tonerdehydrat gemischt.The ammonium sulfate formed, which is initially obtained as a solution, is up to Evaporated crystallization. The salt is centrifuged and replenished with new alumina hydrate mixed.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Herstellung von Aluminiumsulfat aus Tonerdehydrat, dadurch geT kennzeichnet, daß man das Tonerdehydrat mit Ammoniumsulfat erhitzt, worauf das dabei entstehende Ammoniak in bekannter Weise durch Gips wieder in Ammoniumsulfat umgewandelt wird.A process for the production of aluminum sulphate from aluminum hydrate, characterized ge T indicates that the alumina hydrate is heated with ammonium sulfate, whereupon the resulting ammonia in a known manner by gypsum converted back into ammonium sulfate.
DE1921354328D 1921-12-03 1921-03-15 Process for the production of aluminum sulfate from alumina hydrate Expired DE354328C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV17052D DE367134C (en) 1921-12-03 1921-12-03 Process for the production of aluminum sulfate from alumina hydrate

Publications (1)

Publication Number Publication Date
DE354328C true DE354328C (en) 1922-06-07

Family

ID=7576080

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1921354328D Expired DE354328C (en) 1921-12-03 1921-03-15 Process for the production of aluminum sulfate from alumina hydrate
DEV17052D Expired DE367134C (en) 1921-12-03 1921-12-03 Process for the production of aluminum sulfate from alumina hydrate

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEV17052D Expired DE367134C (en) 1921-12-03 1921-12-03 Process for the production of aluminum sulfate from alumina hydrate

Country Status (1)

Country Link
DE (2) DE354328C (en)

Also Published As

Publication number Publication date
DE367134C (en) 1923-01-17

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