DE530500C - Process for the production of a fertilizer containing urea calcium nitrate - Google Patents

Process for the production of a fertilizer containing urea calcium nitrate

Info

Publication number
DE530500C
DE530500C DEI38304D DEI0038304D DE530500C DE 530500 C DE530500 C DE 530500C DE I38304 D DEI38304 D DE I38304D DE I0038304 D DEI0038304 D DE I0038304D DE 530500 C DE530500 C DE 530500C
Authority
DE
Germany
Prior art keywords
calcium nitrate
production
containing urea
fertilizer containing
urea
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
DEI38304D
Other languages
German (de)
Inventor
Dr Emmerich Von Pongratz
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI38304D priority Critical patent/DE530500C/en
Application granted granted Critical
Publication of DE530500C publication Critical patent/DE530500C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C5/00—Fertilisers containing other nitrates
    • C05C5/005—Post-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)

Description

Verfahren zur Herstellung eines Harnstoff-Kalksalpeter enthaltenden Düngemittels Das Doppelsalz Harnstoff -Kalksalpeter Ca(N03)+ 4 NH2 # CO # NH_ wurde bisher in der Weise hergestellt, daß man die wäßrige Lösung der Komponenten eindampfte, die heiße konzentrierte Lösung mittels Düsen unter Anwendung von Druckluft verspritzte oder ein Hydrat des Calciumnitrats mit Harnstoff zusammenschmolz.Process for the production of a urea-calcium nitrate containing Fertilizer The double salt urea calcium nitrate Ca (N03) + 4 NH2 # CO # NH_ was previously produced in such a way that the aqueous solution of the components was evaporated, sprayed the hot concentrated solution through nozzles using compressed air or a hydrate of calcium nitrate fused with urea.

Es wurde nun gefunden, daß man das genannte Doppelsalz vorteilhaft in der Weise aus den Komponenten herstellen kann, daß man diese in ganz oder nahezu wasserfreier bzw. kristallwasserfreier Form verschmilzt oder sintert. Die Erhitzung muß gleichmäßig erfolgen; bei 148 bis i5o° wird eine vollständig klare Schmelze erhalten. Der besondere Vorteil dieser Arbeitsweise liegt darin, daß im Gegensatz zu den bisher bekannten Verfahren Zersetzungen praktisch gänzlich vermieden werden. So wird kohlensaurer Kalle und Cyanursäure überhaupt nicht gebildet, und der Biuretgehalt des Endproduktes beträgt weniger als o,2 °/". Man arbeitet zweckmäßig in dem für die Bildung des Doppelsalzes theoretisch notwendigen Mengenverhältnis, doch können auch andere Mischungsverhältnisse verwendet werden.It has now been found that said double salt is advantageous can be produced from the components in such a way that they can be completely or almost completely anhydrous or water-free form melts or sinters. The heating must be done evenly; at 148 ° to 150 ° it becomes a completely clear melt obtain. The particular advantage of this way of working is that in contrast With the previously known processes, decomposition can be practically completely avoided. So carbonate of potash and cyanuric acid are not formed at all, and the biuret content of the end product is less than 0.2%. It is expedient to work in the for the formation of the double salt theoretically necessary quantity ratio, but can other mixing ratios can also be used.

Die Formgebung kann in der üblichen Weise, z. B. durch Zerkleinern des erkalteten Schmelzkuchens auf die gewünschte Korngröße oder durch Verspritzen der heißen Schmelze oder auf andere Weise erfolgen. Das Produkt kann in granulierter Form auch durch Behandlung der feingepulverten Mischung der Komponenten im Drehofen erhalten werden. Die Lagerbeständigkeit der Düngemittel kann durch Besprengen mit geeigneten Ülen noch erhöht werden. Beispiel Eine innige Mischung von 1G4 kg wasserfreiem Kalksalpeter und 24o kg praktisch wasserfreiem Harnstoff wird unter Rühren auf 148 bis i5o° erhitzt, wobei eine vollkommen klare Schmelze erhalten wird. Diese wird alsdann entweder heiß verspritzt oder nach dem Erkalten mechanisch zerkleinert. Biuret ist in dem erhaltenen Düngemittel nur in Spuren nachweisbar, und kohlensaurer Kalle und Cyanursäure sind nicht vorhanden. Das Erzeugnis ist vollkommen homogen und entspricht dem Doppelsalz Ca(\TO")_ +4NH_#CO#NH-The shaping can be done in the usual way, e.g. B. by crushing of the cooled melting cake to the desired grain size or by spraying the hot melt or in some other way. The product can be granulated Form also by treating the finely powdered mixture of the components in the rotary kiln can be obtained. The shelf life of fertilizers can be increased by sprinkling with suitable oils can be increased. Example An intimate mixture of 1G4 kg of anhydrous Calcium nitrate and 240 kg of practically anhydrous urea are brought to 148 while stirring heated to 150 °, whereby a perfectly clear melt is obtained. This will then either sprayed hot or mechanically crushed after cooling. Biuret is only detectable in traces in the fertilizer obtained, and it is more carbonic acid There are no potassium or cyanuric acid. The product is completely homogeneous and corresponds to the double salt Ca (\ TO ") _ + 4NH_ # CO # NH-

Claims (1)

PATLI`TTANSPRÜCIIE: i. Verfahren zur Herstellung eines Harnstoff - Kalksalpeter enthaltenden Düngemittels durch Schmelzen oder Zusammensintern von Harnstoff und Kalksalpeter, dadurch gekennzeichnet, daß man die beiden Komponenten in ganz oder nahezu -wasserfreier bz#v. kristallwasserfreier Form verwendet. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß man die innige Mischung der wasserfreien bzw. kristallwasserfreien Komponenten im Drehofen behandelt.PATLI'T CLAIM: i. Process for the production of a urea Fertilizers containing calcium nitrate by melting or sintering together from Urea and calcium nitrate, characterized in that the two components are used in completely or almost -water-free bz # v. anhydrous form used. a. Process according to claim i, characterized in that the intimate mixing of the anhydrous or water-free components treated in a rotary kiln.
DEI38304D 1929-06-09 1929-06-09 Process for the production of a fertilizer containing urea calcium nitrate Expired DE530500C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI38304D DE530500C (en) 1929-06-09 1929-06-09 Process for the production of a fertilizer containing urea calcium nitrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI38304D DE530500C (en) 1929-06-09 1929-06-09 Process for the production of a fertilizer containing urea calcium nitrate

Publications (1)

Publication Number Publication Date
DE530500C true DE530500C (en) 1931-07-29

Family

ID=7189751

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI38304D Expired DE530500C (en) 1929-06-09 1929-06-09 Process for the production of a fertilizer containing urea calcium nitrate

Country Status (1)

Country Link
DE (1) DE530500C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007486A1 (en) * 1980-02-28 1981-09-03 Ruhrchemie Ag, 4200 Oberhausen METHOD FOR PRODUCING NITROGEN FERTILIZER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007486A1 (en) * 1980-02-28 1981-09-03 Ruhrchemie Ag, 4200 Oberhausen METHOD FOR PRODUCING NITROGEN FERTILIZER

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