DE734110C - Process for the purification of alkaline earth and magnesium-containing sols containing essentially sodium chloride - Google Patents

Process for the purification of alkaline earth and magnesium-containing sols containing essentially sodium chloride

Info

Publication number
DE734110C
DE734110C DES134803D DES0134803D DE734110C DE 734110 C DE734110 C DE 734110C DE S134803 D DES134803 D DE S134803D DE S0134803 D DES0134803 D DE S0134803D DE 734110 C DE734110 C DE 734110C
Authority
DE
Germany
Prior art keywords
magnesium
sodium chloride
alkaline earth
purification
essentially sodium
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
DES134803D
Other languages
German (de)
Inventor
Dr Franz Klaus
Immo Reinitzer
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.)
SALGE BUEHLER GmbH
Original Assignee
SALGE BUEHLER GmbH
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 SALGE BUEHLER GmbH filed Critical SALGE BUEHLER GmbH
Priority to DES134803D priority Critical patent/DE734110C/en
Application granted granted Critical
Publication of DE734110C publication Critical patent/DE734110C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00Halides of sodium, potassium or alkali metals in general
    • C01D3/14Purification
    • C01D3/16Purification by precipitation or adsorption

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Description

Verfahren zur Reinigung erdalkali- und magnesiumhaltiger, im wesentlichen Natriumchlorid enthaltender Solen Die Erfindung betrifft ein Verfahren zur Reinigung erdalkali- und m,agnesiumhaltiger, im wesentlichen _Natriumchlo@rid enthaltender Solen durch Fällung der Erdalkalien und des Magnesiums mit Alkalien. Die neue Arbeitsweise besteht darin, daß. die zu fällende Lösung vor, während oder unmittelbar nach dem Alkalizusatz mit gealterten, gelförmigen Niederschlägen aus vorhergehenden Fällungen geimpft wird.Process for cleaning alkaline earth and magnesium-containing, essentially Sols Containing Sodium Chloride The invention relates to a method for purification alkaline earth and magnesium containing, essentially _sodium chloride containing Brines through the precipitation of alkaline earths and magnesium with alkalis. The new way of working is that. the solution to be precipitated before, during or immediately after Addition of alkali with aged, gel-like precipitates from previous precipitations is vaccinated.

So wird man erfindungsgemäß vor, während oder unmittelbar nach dem Zusatz der fällenden Stoffe bereits gealterte; hasische, gelförmige Magnesiumsalze, wie etwa basisches, gealtertes Magnesiumcarboniatgel, zusetzen. Der Begriff gealtertes Gel wird hier im Sinne der Kolloidchemie verstanden. Damit sind nämlich gemeint Fällungen basischer Al:agnesiumsalze, die in der Mutterlauge längere Zeit gealtert -sind. Bekanntlich treten hierbei irreversible Änderungen im Gel auf. Die bei Gegenwart solcher gealtertenGelegewonnenen Fällungen von Ma-n;esiumisalcen besitzen ihrerseits die gleiche Wirkung wie ein gealtertes Gel.So you will according to the invention before, during or immediately after Addition of precipitating substances already aged; Hasic, gel-like magnesium salts, such as basic, aged magnesium carbonate gel. The term aged Gel is understood here in the sense of colloid chemistry. That is what it means Precipitations of basic Al: agnesium salts which have aged for a long time in the mother liquor -are. It is known that irreversible changes in the gel occur here. The one in the present of such aged gelatinous precipitates of man-n; esium isalcene for their part the same effect as an aged gel.

Die Abscheiden-- vom Ma,gnesiu.mhydroxvd aus magnesitrm- und calciumhaltigen Laugen, zvie solche nach der Entziehung des Broms an verschiedenen Stellen anfallen, ist bekannt. Zu diesem Zwccke wird, nachdem die Lauge mit etwas Kalk zur Ausfällung des Eisens behandelt worden ist, dieselbe nach der Filtration mit einer bereits mit Kalk gefällten Lauge von einer früheren Fällung versetzt, um so Impfkristalle von '.'#lagnesiumhydroxyd in die Lauge zu bekommen. Erst dann wird die Lauge weiter in einen Fällbottich gebracht und mit trockenem Kalk gefällt.The deposits - from Ma, gnesiu.mhydroxvd from magnesite and calcium containing Alkalis, such as those obtained in different places after the bromine has been extracted, is known. For this purpose, after the lye is mixed with a little lime, it is precipitated of iron has been treated, the same after filtration with an already Lye precipitated with lime from an earlier precipitation was added to produce seed crystals of '.' # lagnesium hydroxide in the lye. Only then will the lye continue brought into a felling vat and precipitated with dry lime.

Im Gegensatz dazu betrifft die neue Arbeitsweise nicht direkt die Herstellung von Magnesiumhydroxyd, das seinerseits später auf Magnesium aufgearbeitet werden soll, sondern die Reinigung -ron Natrittmchloridlaugen von Magnesium, da dieses 11lagnesinin im Laufe des Solvayprozesses sich außerordentlich störend bemerkbar macht. Als Fällmittel sind# auch Soda- bzw. Ammoncarbonat vorgesehen;-so daß als Fällungen basisches Magnesiumhydrocarbonat bzw. :%Iagnesiu.mcarboizat in Frage kommt.In contrast, the new way of working does not directly affect the Production of magnesium hydroxide, that in turn later on magnesium should be worked up, but the purification of sodium chloride liquors Magnesium, because this 11lagnesinin is extraordinarily high in the course of the Solvay process makes disturbing noticeable. Soda or ammonium carbonate are also provided as precipitants; that as precipitations basic magnesium hydrocarbonate or:% Iagnesiu.mcarboizat in Question comes.

Ohne die neue Arbeitsweise theoretisch erklären zu können, bleibt wesentlich für sie die Fällung des Mg - --Ions vorzugsweise bei Gegenwart überschüssiger OH'-Ionen unter Zusatz gealterten Gels. Ausführungsbeispiel iooo ccm Kochsalzlösung von 295- NaCl im Liter und einem Gehalt von 1,96- CaO und 1,5o g M-0 als Salze geben bei der g Fällung bei Zimmertemperatuir mit -IS Natriumcarbonat in .etwa 2oo'0iger Lösung oder der äquivalenten Menge Ammonearbonat einen @Ig -Ca-Nieder schlag, der auf'@erordcntlicb. voluminös isst und außerordentlich geringe Absetztendenz zeigt. Erst nach Tagen hat er sich so weit zusammengeballt, daß die überstehende Lösung abdekantiert werden kann.Without being able to explain the new working method theoretically, what remains essential for them is the precipitation of the Mg - ion, preferably in the presence of excess OH 'ions with the addition of aged gel. Embodiment 100 ccm of saline solution of 295 NaCl per liter and a content of 1.96 CaO and 1.5o g M-O as salts give in the g precipitation at room temperature with -IS sodium carbonate in about 2oo% solution or the equivalent Amount of ammonium carbonate a @Ig -Ca precipitate, which is to '@ erordcntlicb. eats voluminously and shows an extremely low tendency to wean. Only after a few days did it clump so much that the supernatant solution can be decanted off.

Dieselbe Fällung, vorgenommen unter Zusatz der bei zwei normalen Versuchen erhaltenen in 5 Tagen gealterten Niederscbllige, gibt einen Niederschlag, der rasch absetzt und in 3 Stunden dekantiert werden kann.The same precipitation made with the addition of that in two normal experiments Precipitation obtained in 5 days aged, gives a precipitate that rapidly settles and can be decanted in 3 hours.

Claims (1)

PATL'NTANSPRUCH: \`erfahren zur Reinigung erdalkali- und magnesiumhaltiger, im 'wesentlichen Natriumchl-orid enthaltender Solen durch Fällung der Erdallmlien und des 1Magnesiums mit Alkalien, dadurch gekennzeichnet, daß die zu fällende Lösung vor, während oder unmittelbar nachdem Alkalizusatz mit gealterten, gelförmigen Niederschlägen aus vorhergehenden Fällungen gelnlpft wird.PATL'NT CLAIM: \ `experienced in cleaning alkaline earth and magnesium containing, Soles containing essentially sodium chloride by precipitation of the Erdallmlien and 1Magnesium with alkalis, characterized in that the solution to be precipitated before, during or immediately after the addition of alkali with aged, gel-like precipitates is applied from previous precipitations.
DES134803D 1938-12-01 1938-12-01 Process for the purification of alkaline earth and magnesium-containing sols containing essentially sodium chloride Expired DE734110C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES134803D DE734110C (en) 1938-12-01 1938-12-01 Process for the purification of alkaline earth and magnesium-containing sols containing essentially sodium chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES134803D DE734110C (en) 1938-12-01 1938-12-01 Process for the purification of alkaline earth and magnesium-containing sols containing essentially sodium chloride

Publications (1)

Publication Number Publication Date
DE734110C true DE734110C (en) 1943-04-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DES134803D Expired DE734110C (en) 1938-12-01 1938-12-01 Process for the purification of alkaline earth and magnesium-containing sols containing essentially sodium chloride

Country Status (1)

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DE (1) DE734110C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339572A1 (en) * 1976-01-30 1977-08-26 Allied Chem PROCESS FOR PURIFYING BRINE CONTAINING DISSOLVED IMPURITIES BASED ON STRONTIUM, CALCIUM AND MAGNESIUM, AND NEW PRODUCTS THUS OBTAINED
DE3301398A1 (en) * 1983-01-18 1984-07-19 Chemische Fabrik Kalk GmbH, 5000 Köln Method of producing soda from the residues obtained in the treatment of crude potassium salts
DE3301399A1 (en) * 1983-01-18 1984-07-19 Chemische Fabrik Kalk GmbH, 5000 Köln Method of producing soda from the residues obtained in the treatment of crude potassium salts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339572A1 (en) * 1976-01-30 1977-08-26 Allied Chem PROCESS FOR PURIFYING BRINE CONTAINING DISSOLVED IMPURITIES BASED ON STRONTIUM, CALCIUM AND MAGNESIUM, AND NEW PRODUCTS THUS OBTAINED
DE3301398A1 (en) * 1983-01-18 1984-07-19 Chemische Fabrik Kalk GmbH, 5000 Köln Method of producing soda from the residues obtained in the treatment of crude potassium salts
DE3301399A1 (en) * 1983-01-18 1984-07-19 Chemische Fabrik Kalk GmbH, 5000 Köln Method of producing soda from the residues obtained in the treatment of crude potassium salts

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