DE620901C - Production of alumina hydrate alongside trialkali phosphate - Google Patents

Production of alumina hydrate alongside trialkali phosphate

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Publication number
DE620901C
DE620901C DEC46228D DEC0046228D DE620901C DE 620901 C DE620901 C DE 620901C DE C46228 D DEC46228 D DE C46228D DE C0046228 D DEC0046228 D DE C0046228D DE 620901 C DE620901 C DE 620901C
Authority
DE
Germany
Prior art keywords
phosphate
digestion
alumina hydrate
alumina
alkali
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
DEC46228D
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.)
Chemische Werke Vorm H & E Alb
Original Assignee
Chemische Werke Vorm H & E Alb
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
Priority to DE1930516460D priority Critical patent/DE516460C/en
Application filed by Chemische Werke Vorm H & E Alb filed Critical Chemische Werke Vorm H & E Alb
Priority to DEC46228D priority patent/DE620901C/en
Application granted granted Critical
Publication of DE620901C publication Critical patent/DE620901C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/10—Esters
    • C08F20/12—Esters of monohydric alcohols or phenols
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/30—Alkali metal phosphates
    • C01B25/305—Preparation from phosphorus-containing compounds by alkaline treatment
    • C01B25/306—Preparation from phosphorus-containing compounds by alkaline treatment from phosphates
    • 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
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • 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
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0673—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process from phosphate-containing minerals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F18/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
    • C08F18/02—Esters of monocarboxylic acids
    • C08F18/04—Vinyl esters
    • C08F18/10—Vinyl esters of monocarboxylic acids containing three or more carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F36/04—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated

Description

Herstellung von Tonerdehydrat neben Trialkaliphosphat Es wurde bereits vorgeschlagen, Tonerdehydrat neben Trialkaliphosphat dadurch herzustellen, daß natürliche oder künstliche Tonerdephosphate mit Ätzalkali, Alkalicarbonat oder Alkalisulfat und Kohle aufgeschlossen werden, worauf die Reaktionsschmelze in Wasser oder in einer vom vorhergehenden Aufschluß stammenden (von Alkaliphosphat durch Kristallisation und Tonerdehydrat in bekannter Weise durch Ausrühren befreiten) ätzalkalischen (aluminathaltigen) Mutterlauge gelöst wird.Production of alumina hydrate in addition to trialkali phosphate It has already been proposed to produce alumina hydrate in addition to trialkali phosphate in that natural or artificial alumina phosphates with caustic alkali, alkali carbonate or alkali sulfate and coal are digested, whereupon the reaction melt in water or in one derived from the previous digestion (from alkali metal phosphate by crystallization and alumina hydrate freed in a known manner by stirring) caustic alkaline (aluminate-containing) Mother liquor is dissolved.

Bei dieser Arbeitsweise erhält man mengenmäßig mehr älkalialuminathaltigeAlkalilauge, als zum jeweiligen Lösen eines neuen pyrogenen Aufschlusses benötigt wird. Dieser überschüssige Teil ätzalkalischer, alkalialuminathaltiger Lauge kann nun vorteilhafterweise an Stelle von reiner Ätzalkalilauge zum alkalischen Aufschluß von Tonerdephosphaten nach dem Verfahren des Patents 5 16 46o verwendet werden.With this method of operation, the amount of alkali metal aluminate-containing alkali solution obtained is greater than that required to dissolve a new pyrogenic digestion. This excess portion of caustic alkali, alkali aluminate-containing lye can now advantageously be used instead of pure caustic alkali lye for the alkaline digestion of alumina phosphates according to the method of patent 5 1 6 46o.

Diese Arbeitsweise hat ganz erhebliche Vorteile z. Die bei dem bekannten Verfahren des thermischen Aufschlusses von Tonerdepho'siphaten anfallende, durch Lösen der Reaktionsschmelze in einer vom vorangehenden Aufschluß stammenden (von Alkaliphosphat durch Kristallisation und Tonerdehydrat in bekannter Weise durch Ausrühren befreiten) ätzalkalischen aluminathaltigen Mutterlauge braucht nicht für sich weiterverarbeitet werden, was mit erheblichen Kosten verbunden wäre.This way of working has very significant advantages such. The one with the known Process of the thermal digestion of alumina phosphates obtained by Dissolve the reaction melt in a from the preceding digestion (from Alkali phosphate by crystallization and alumina hydrate in a known manner Stir free) caustic alkaline aluminate-containing mother liquor is not required for can be further processed, which would be associated with considerable costs.

z. Beim naßalkalischen Aufschluß von Tonerdephosphaten nach der Arbeitsweise des Hauptpatents kann man ran Stelle seiner teurem, reinen Ätzalkalilauge das benötigte Ätzalkali in besonders preiswerter Form zuführen bei Verwendung der vom thermischen Aufschluß stammenden (von Alkaliphosphat durch Kristallisation und Tonerdehydrat in bekannter Weise durch Ausrühren befreiten) Löselaugen, da in diesen das Ätzalkafi aus dem weit billigeren Alkalicarbonat bzw. Alkalisulfat und Kohle gewonnen wurde. Beispiel Es werden zunächst in bekannter Weise hintereinander ioo kg Redondaphosphat mit 38 % P205 und 2o % A1203 mit iiokg Soda auf etwa 6oo bis 8oo° erhitzt und jeweils mit 65o kg einer vom vorhergehenden Aufschluß stammenden P205-haltigen Natriumaluminatlauge mit i o kg Na O H und ¢ kg Tonerdehydrat ausgelaugt, so daß nach jedem Aufschluß eine Lauge verhalten wird, die etwa Zoo kg Trinatriumphosphat und 28 kg Tonerdehydrat sowie 24 kg NaOH enthält. Nach der. Ausscheidung, des Trinatriumphosphates durch Kristallisation und nach dem Ausrühren des Tonerdehydrates ergibt sich eine Mutterlauge, die neben geringen Mengen Phosphat 2¢ kg NaOH und 5,6 kg Tonerdehydrat enthält. - -Zum Auslaugen- eines pyrogenen . Anifschlusses werden auf ioo kg gedondaphosphat also immer nur etwa q.o bis 45 % dieser natriumaluminathaltigen Lauge gebraucht. 55 bis 6o % sind gewissermaßen im Überschuß vorhanden und können nun wie folgt weiterverarbeitet werden. Nach etwa acht pyrogenen Aufschlüssen mit etwa i oo kg Redondaphosphat hat sich die natriumaluminathaltige Natroxilauge so weit angereichert, daß sie i 12 kg Na O H und 2 i kg Tonerdehydrat enthält. Mit dieser Lauge werden nunmehr nach dem Verfahren des Hauptpatents ,auf nassem Wege ioo kg eines 38 % P205 und 20 % A120, enthaltenden Tonerdephosphates ;aufgeschlossen.z. In the wet-alkaline digestion of alumina phosphates according to the method of the main patent, instead of its expensive, pure caustic alkali, the required caustic alkali can be supplied in a particularly inexpensive form when using the solution leaches that come from the thermal decomposition (freed from alkali phosphate by crystallization and alumina hydrate in a known manner by stirring), because in these the caustic alkali was obtained from the far cheaper alkali carbonate or alkali sulphate and coal. EXAMPLE 100 kg of redondaphosphate with 38% P205 and 20% A1203 with 100 g of soda are first heated in a known manner to about 600 to 800 ° and each time with 65o kg of a P205-containing sodium aluminate liquor from the previous digestion with 10 kg of Na OH and ¢ kg of alumina hydrate leached, so that after each digestion a lye is obtained which contains about zoo kg of trisodium phosphate and 28 kg of alumina hydrate and 24 kg of NaOH. After. Excretion of the trisodium phosphate by crystallization and after stirring out the alumina hydrate results in a mother liquor which, in addition to small amounts of phosphate, contains 2 kg NaOH and 5.6 kg alumina hydrate. - For leaching a pyrogenic. Following this, only about qo to 45 % of this sodium aluminate lye is used for every 100 kg of gedondaphosphate. 55 to 60% are to a certain extent present in excess and can now be further processed as follows. After about eight pyrogenic digestions with about 100 kg of redondaphosphate, the sodium aluminate-containing sodium hydroxide solution has accumulated to such an extent that it contains 12 kg of NaOH and 21 kg of alumina hydrate. With this lye, 100 kg of an alumina phosphate containing 38% P205 and 20% A120 are digested by the process of the main patent.

Claims (3)

PATENTANSPRUCH: Weitere Ausbildung des Verfahrens zur getrennten Gewinnung von Trialkaliphosphat und Tonerde beim naßalkalischen Aufschluß nach Patent 516460, dadurch gekennzeichnet, daß zum naßalkalischen Aufschluß von Tonerdephosphat Verwendung finden die ätzalkalischen aluminathaltigen Mutterlaugen, wie sie anfallen bei der folgenden Arbeitsweise: i. pyrogener Aufschluß von Aluminiumphosphat mit Ätznatron, Soda oder Alkalisulfat und Kohle, PATENT CLAIM: Further development of the process for separate extraction of trialkali phosphate and clay in wet alkaline digestion according to patent 516460, characterized in that it is used for the wet alkaline digestion of alumina phosphate find the caustic-alkaline, aluminate-containing mother liquors as they occur in the following working method: i. Pyrogenic digestion of aluminum phosphate with caustic soda, Soda or alkali sulphate and coal, 2. Lösen in vom vorherigen Aufschluß stammenden, von Trialkaliphosphat durch Kristallisation und Tonerde durch Ausrühren befreiten Mutterlaugen, 3. nach Filtration, Auskristallisierendes Alkalitriphosphates und Ausrühren des 'Alurriniumoxydhydrates, q.. mehrmalige Wiederholung von i bis 2. Dissolve in the previous digest, freed from trialkali phosphate by crystallization and alumina by stirring Mother liquors, 3. after filtration, alkali metal triphosphate crystallizing out and Stirring out the aluminum oxide hydrate, q .. repeated repetition of i to 3. Vom Patentsucher sind als die Erfinder angegeben wurde Dr. Hans Huber und Dr.-Ing. Hans Mengelejbeide in Wiesbader3. According to the patent seeker, Dr. Hans Huber and Dr.-Ing. Hans Mengelejbeide in Wiesbader
DEC46228D 1932-03-25 1932-03-25 Production of alumina hydrate alongside trialkali phosphate Expired DE620901C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1930516460D DE516460C (en) 1932-03-25 1930-03-23 Production of clay in addition to alkali phosphates
DEC46228D DE620901C (en) 1932-03-25 1932-03-25 Production of alumina hydrate alongside trialkali phosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC46228D DE620901C (en) 1932-03-25 1932-03-25 Production of alumina hydrate alongside trialkali phosphate

Publications (1)

Publication Number Publication Date
DE620901C true DE620901C (en) 1935-10-30

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DE1930516460D Expired DE516460C (en) 1932-03-25 1930-03-23 Production of clay in addition to alkali phosphates
DEC46228D Expired DE620901C (en) 1932-03-25 1932-03-25 Production of alumina hydrate alongside trialkali phosphate

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1930516460D Expired DE516460C (en) 1932-03-25 1930-03-23 Production of clay in addition to alkali phosphates

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058033B (en) * 1958-01-23 1959-05-27 Albert Ag Chem Werke Process for the production of trisodium phosphate from alkaline sodium, phosphoric acid and optionally fluorine-containing sodium aluminate liquors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963152C (en) * 1955-01-21 1957-05-02 Albert Ag Chem Werke Process for the alkaline processing of metal phosphates, in particular aluminum phosphates, containing insoluble impurities in alkaline digesting agents, on alkali metal phosphate and alumina

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058033B (en) * 1958-01-23 1959-05-27 Albert Ag Chem Werke Process for the production of trisodium phosphate from alkaline sodium, phosphoric acid and optionally fluorine-containing sodium aluminate liquors

Also Published As

Publication number Publication date
DE516460C (en) 1932-04-07

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