DE548812C - Production of anhydrous, neutral calcium nitrate - Google Patents

Production of anhydrous, neutral calcium nitrate

Info

Publication number
DE548812C
DE548812C DEK119127D DEK0119127D DE548812C DE 548812 C DE548812 C DE 548812C DE K119127 D DEK119127 D DE K119127D DE K0119127 D DEK0119127 D DE K0119127D DE 548812 C DE548812 C DE 548812C
Authority
DE
Germany
Prior art keywords
calcium nitrate
anhydrous
production
neutral calcium
calcium
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
DEK119127D
Other languages
German (de)
Inventor
Dr Oskar Friedrich Kaselitz
Dr Walter Katz
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.)
Kali Forschungs Anstalt GmbH
Original Assignee
Kali Forschungs Anstalt 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 Kali Forschungs Anstalt GmbH filed Critical Kali Forschungs Anstalt GmbH
Priority to DEK119127D priority Critical patent/DE548812C/en
Application granted granted Critical
Publication of DE548812C publication Critical patent/DE548812C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/38—Nitric acid
    • C01B21/46—Purification; Separation ; Stabilisation
    • 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
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/36—Nitrates
    • C01F11/38—Preparation with nitric acid or nitrogen oxides

Landscapes

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

Description

Herstellung von wasserfreiem, neutralem Calciumnitrat Es ist bekannt, Erdalkalinitrate aus festen Oxyden, Hydroxyden und Carbonaten der Erdalkalien durch Absorption von Salpetersäure, flüssig oder dampfförmig, bzw. nitrosen Gasen herzustellen. Unter diesen Verfahren haben diejenigen, welche bei erhöhter Temperatur arbeiten und direkt feste Endprodukte ergeben, den Vorzug. Die resultierenden Produkte enthalten, wenn man die bisher bekannten Methoden anwendet, meist Nitrit, Wasser sowie Reste der Rohstoffe.Production of anhydrous, neutral calcium nitrate It is known Alkaline earth nitrates from solid oxides, hydroxides and carbonates of alkaline earths Absorption of nitric acid, liquid or vapor, or nitrous gases. Among these methods are those who operate at elevated temperatures and direct solid end products give preference. The resulting products contain if you use the previously known methods, mostly nitrite, water and residues of raw materials.

Es hat sich gezeigt, daß bei der Verwendung von Kalkverbindungen die Absorption nitroser Gase gegen Ende der Reaktion ziemlich unvollständig verläuft und nicht umgesetzte Rohstoffteilchen auch bei langer Einwirkungsdauer der nitrosen Gase zurückbleiben. Bei höherer Temperatur sintert nämlich die Reaktionsmasse leicht zusammen, wodurch die vollständige Umsetzung verhindert wird. Bei niederer Temperatur beobachtet man Volumenvermehrung, wobei die ganze Masse gasundurchlässig wird.It has been shown that when using lime compounds The absorption of nitrous gases is rather incomplete towards the end of the reaction and unreacted raw material particles even after long exposure to the nitrous Gases remain. This is because the reaction mass sinters easily at a higher temperature together, preventing full implementation. At low temperature one observes an increase in volume, whereby the whole mass becomes impermeable to gas.

Es wurde gefunden, daß in bezug auf die Eignung zur Herstellung eines neutralen, wasserfreien Calciumnitrates ein Gemisch von festem Calciumhydroxyd und Calciumnitrat, also ein basisches Calciumnitrat, diese Nachteile beseitigt. Schon bei einer Temperatur von zoo' ist die Reaktion dieses Gemisches mit nitrosen Gasen eine gleichmäßige, und das Endprodukt ist auch im Innern vollständig umgesetzt. Um etwa noch vorhandenes Wasser auszutreiben, arbeitet man besonders vorteilhaft bei 3oo bis 35o°. Durch die Zumischung von Calciumnitrat vermindert man die anfänglich große Reaktionsgeschwindigkeit, vermeidet örtliche Überhitzungen und damit Verdichten bzw. Zusammenkleben der Reaktionsmasse. Das Reaktionsprodukt behält die ursprüngliche leichte Form bei, reagiert neutral und ist in Wasser vollkommen löslich.It has been found that in terms of the suitability for making a neutral, anhydrous calcium nitrate a mixture of solid calcium hydroxide and Calcium nitrate, a basic calcium nitrate, eliminates these disadvantages. Nice at a temperature of zoo 'is the reaction of this mixture with nitrous gases a uniform, and the end product is also fully implemented inside. In order to drive out any remaining water, it is particularly advantageous to work at 3oo to 35o °. The addition of calcium nitrate reduces the initially high reaction speed, avoids local overheating and thus compaction or sticking the reaction mass together. The reaction product retains the original one light form, reacts neutrally and is completely soluble in water.

Zur Absorption gut geeignete Produkte erhält man durch Agglomerieren von gelöschtem Kalk zu kugeligen Körpern mit Hilfe konzentrierter Calciumnitratlösung. Durch Ablöschen von gebranntem Kalk mit Calciumnitratlösung oder Zufügen von Calciumnitrat zu Calciumcarbonat oder Calciumoxyd erhält man gleichfalls Pulver, die als solche, wenn man sie in bekannter Weise rührt oder locker hält, die nitrosen Gase gut und gleichmäßig absorbieren; es lassen sich aber daraus auch sehr gut leichte, poröse Brikette formen, die vorzüglich reagieren, ohne dicht zu werden.Products which are well suited for absorption are obtained by agglomeration from slaked lime to spherical bodies with the help of concentrated calcium nitrate solution. By quenching quick lime with calcium nitrate solution or adding calcium nitrate in addition to calcium carbonate or calcium oxide, powder is also obtained which, as such, if you stir them in a known way or hold them loosely, the nitrous gases are good and absorb evenly; but it can also be used to make light, porous ones Form briquettes that react excellently without becoming dense.

Claims (1)

PATENTANSPRUCH: Verfahren zur _Hexstellung von wasserfreiem Calciumnitrat aus festem Calciumoxyd, -hydroxyd oder -carbonat und nitrosen Gasen, dadurch gekennzeichnet, daß man Calciumoxyd, -hydroxyd oder -carbonat vermischt mit Calciumnitrat verwendet.PATENT CLAIM: Process for _Hexposing anhydrous calcium nitrate of solid calcium oxide, hydroxide or carbonate and nitrous gases, characterized in that that calcium oxide, hydroxide or carbonate is used mixed with calcium nitrate.
DEK119127D 1931-02-24 1931-02-25 Production of anhydrous, neutral calcium nitrate Expired DE548812C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK119127D DE548812C (en) 1931-02-24 1931-02-25 Production of anhydrous, neutral calcium nitrate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE371279X 1931-02-24
DEK119127D DE548812C (en) 1931-02-24 1931-02-25 Production of anhydrous, neutral calcium nitrate

Publications (1)

Publication Number Publication Date
DE548812C true DE548812C (en) 1933-01-21

Family

ID=25854679

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK119127D Expired DE548812C (en) 1931-02-24 1931-02-25 Production of anhydrous, neutral calcium nitrate

Country Status (1)

Country Link
DE (1) DE548812C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946626C (en) * 1937-10-15 1956-08-02 Uhde Gmbh Friedrich Process for the production of concentrated alkaline earth nitrate liquors, in particular concentrated calcium nitrate liquor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946626C (en) * 1937-10-15 1956-08-02 Uhde Gmbh Friedrich Process for the production of concentrated alkaline earth nitrate liquors, in particular concentrated calcium nitrate liquor

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