DE461898C - Method for precipitating potassium cobalt nitrite - Google Patents

Method for precipitating potassium cobalt nitrite

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Publication number
DE461898C
DE461898C DES79504D DES0079504D DE461898C DE 461898 C DE461898 C DE 461898C DE S79504 D DES79504 D DE S79504D DE S0079504 D DES0079504 D DE S0079504D DE 461898 C DE461898 C DE 461898C
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DE
Germany
Prior art keywords
nitrite
cobalt
potassium
bisulfate
precipitation
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
DES79504D
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German (de)
Inventor
Dr Hans Nitze
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.)
HANS NITZE DR
Venator Germany GmbH
Original Assignee
HANS NITZE DR
Sachtleben AG fuer Bergbau und Chemische Industrie
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 HANS NITZE DR, Sachtleben AG fuer Bergbau und Chemische Industrie filed Critical HANS NITZE DR
Priority to DES79504D priority Critical patent/DE461898C/en
Application granted granted Critical
Publication of DE461898C publication Critical patent/DE461898C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00Compounds of cobalt
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00Compounds of cobalt
    • C01G51/006Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Description

Verfahren zur Fällung von Kalium-Kobaltinitrit Um Kobaltsalze zu reinigen und namentlich von Nickel- zu trennen, benutzt man -iie Fällung des Kobalts als Kalium-Kobaltinitrit (Fischersches Salz) (K3Co (NO2) B) und wäscht das gefällte Kobaltsalz aus. Die Fällung erfolgt derartig, daß man das Kobaltsalz in Lösung mit Alkälinitrit versetzt und Essigsäure hinzugibt, um salpetrige Säure frei zu machen und durch diese das Kobaltonitrit zu Kobaltinitrit zu oxydieren, welches dann mit weiterem Kaliumnitrit sich zu Kobaltikaliumnitrit umsetzt.Method of Precipitation of Potassium Cobalt Nitrite To purify cobalt salts and especially to separate from nickel, one uses -iie precipitation of cobalt as Potassium cobalt nitrite (Fischersches Salz) (K3Co (NO2) B) and washes the precipitated Cobalt salt. The precipitation takes place in such a way that the cobalt salt is in solution with Alkali nitrite is added and acetic acid is added to liberate nitrous acid and through this to oxidize the cobalt nitrite to cobalt nitrite, which then with further potassium nitrite is converted to cobalt potassium nitrite.

Das vorliegende Verfahren zur Fällung von Kalium-Kobaltinitrit besteht darin, daß mau die Essigsäure vollständig oder teilweise durch Alkalibisulfat ersetzt. Am besten verwendet man das Alkalibisulfat in festem Zustande und setzt es langsam der vorteilhaft konzentrierten Kobaltsalznatriumnitritlösung hinzu.The present method for the precipitation of potassium cobalt nitrite consists in the fact that the acetic acid is completely or partially replaced by alkali metal bisulphate. It is best to use the alkali bisulphate in a solid state and to set it slowly added to the advantageously concentrated cobalt salt sodium nitrite solution.

Die Verwendung des Alkalibisulfates gibt den Vorteil der größeren Billigkeit im Vergleich zur Essigsäure und erreicht eine besonders vorteilhafte Ausnutzung des Nitrites, weil dieses langsam salpetrige Säure unter der Einwirkung des Bisulfates in Freiheit setzt und so eine wirksame Oxydation des Kobalts gestattet. Wenn man das Salz in fester Form zusetzt, so wird eine für die Ausfällung des Kaliumkobaltinitrites nachteilige Konzentrationsverminderung vermieden. Man kann sowohl Kaliumbisulfat wie Natriumbisulfat oder Gemische beider für sich allein oder in Vermischung mit Kaliumchlorid verwenden. Das Kaliumchlorid kann auch getrennt von dem Bisulfat, aber gleichzeitig mit diesem oder nach Zusatz von Bisulfat zugesetzt werden.The use of the alkali bisulfate gives the advantage of the larger ones Cheap compared to acetic acid and achieved a particularly beneficial one Exploitation of the nitrite, because this slowly forms nitrous acid under the action the bisulfate sets free and thus allows an effective oxidation of the cobalt. If the salt is added in solid form, it becomes one for the precipitation of the potassium cobalt nitrite disadvantageous reduction in concentration avoided. One can use both potassium bisulfate such as sodium bisulfate or mixtures of both on their own or in admixture with Use potassium chloride. The potassium chloride can also be separated from the bisulfate, but can be added simultaneously with this or after the addition of bisulfate.

Beispiel. i 1 einer Kobaltsulfatlösung, die ioo g Kobaltsulfat gelöst enthält, versetzt man mit 340 g Natriumnitrit und gibt, nachdem das Nitrit gelöst ist, etwa 1959 festes Natriumbisulfat (H20), so daß die Lösung schwach sauer reagiert, langsam hinzu. Unter Entweichen nitroser Gase bildet sich das Natriumkobaltinitrit, das durch überschüssiges Kaiiumsalz in Kalium-Kobaltinitr it übergeführt wird.Example. i 1 of a cobalt sulfate solution which dissolved ioo g of cobalt sulfate contains, add 340 g of sodium nitrite and give after the nitrite has dissolved is, about 1959 solid sodium bisulfate (H20), so that the solution reacts slightly acidic, slowly added. Sodium cobalt nitrite is formed with the escape of nitrous gases, which is converted into potassium cobalt nitrate by excess potassium salt.

In dem Beispiel kann man statt 195 g festes Natriumbisulfat auch eine konzentrierte Lösung desselben oder eine Mischung von ioo g festem Natriumbisulfat und 95 g Essiä säure benutzen.In the example, instead of 195 g of solid sodium bisulfate, a concentrated solution of the same or a mixture of 100 g of solid sodium bisulfate and 95 g of acetic acid can be used.

Claims (1)

PATENTANSPRUCH: Verfahren gur Fällung von Kalium-Kobaltinitrif'aüsKobältsalzen undKaliumnitrit, dadurch gekennzeichnet, daß die Fällung in Gegenwart von Alkalibisulfat, vorteilhaft festem, gegebenenfalls in Gegenwart von Essigsäure stattfindet. PATENT CLAIM: Process for the precipitation of potassium cobalt nitrite from cobalt salts and potassium nitrite, characterized in that the precipitation takes place in the presence of alkali metal bisulphate, advantageously solid, optionally in the presence of acetic acid.
DES79504D 1927-05-05 1927-05-05 Method for precipitating potassium cobalt nitrite Expired DE461898C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES79504D DE461898C (en) 1927-05-05 1927-05-05 Method for precipitating potassium cobalt nitrite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES79504D DE461898C (en) 1927-05-05 1927-05-05 Method for precipitating potassium cobalt nitrite

Publications (1)

Publication Number Publication Date
DE461898C true DE461898C (en) 1928-07-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
DES79504D Expired DE461898C (en) 1927-05-05 1927-05-05 Method for precipitating potassium cobalt nitrite

Country Status (1)

Country Link
DE (1) DE461898C (en)

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