AT37239B - Process for the production of a nitrogen- and phosphorus-containing solid fertilizer. - Google Patents

Process for the production of a nitrogen- and phosphorus-containing solid fertilizer.

Info

Publication number
AT37239B
AT37239B AT37239DA AT37239B AT 37239 B AT37239 B AT 37239B AT 37239D A AT37239D A AT 37239DA AT 37239 B AT37239 B AT 37239B
Authority
AT
Austria
Prior art keywords
production
phosphorus
nitrogen
containing solid
solid fertilizer
Prior art date
Application number
Other languages
German (de)
Original Assignee
Norsk Hydro Elektrisk
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 Norsk Hydro Elektrisk filed Critical Norsk Hydro Elektrisk
Application granted granted Critical
Publication of AT37239B publication Critical patent/AT37239B/en

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  • Fertilizers (AREA)

Description

  

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 Masse erstarrt beim Kühlen zu einem festen harten Körper, der zu Pulver zerstossen werden kann. Das Kalzinieren findet zweckmässig durch unmittelbares Erhitzen mittels der heissen Ofengase oder heissen Luft in rotierenden Trommeln statt. Die für eine gewisse Temperatur erforderliche Gasmenge kann   mittels Drosselhahne   ohne Schwierigkeit durch die Trommel geschickt werden. 



   PATENT-ANSPRÜCHE : 
1. Verfahren zur Herstellung eines   stickstoff- und phosphorsäurehaltigen,   festen   Düngemittels,   gekennzeichnet durch Auflösen von Phosphaten in Salpetersäure und Hinzufügung von kalziniertem Kalziumnitrat in der zur chemischen Bindung des   überschüssigen   Wassers erforderlichen Menge.



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 When cooled, the mass solidifies into a solid, hard body that can be crushed into a powder. The calcination takes place conveniently by direct heating by means of the hot furnace gases or hot air in rotating drums. The amount of gas required for a certain temperature can be sent through the drum without difficulty using throttle valves.



   PATENT CLAIMS:
1. A process for the production of a solid fertilizer containing nitrogen and phosphoric acid, characterized by dissolving phosphates in nitric acid and adding calcined calcium nitrate in the amount required to chemically bind the excess water.

Claims (1)

2. Ausführungsform des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass das kalzinierte Kalziumnitrat durch Behandlung mit von den elektrischen Stiokstofföfen entweichenden heissen Ofengase in rotierenden Trommeln hergestellt wird. 2. Embodiment of the method according to claim 1, characterized in that the calcined calcium nitrate is produced in rotating drums by treatment with hot furnace gases escaping from the electric stiokstofföfen.
AT37239D 1908-03-31 1908-03-31 Process for the production of a nitrogen- and phosphorus-containing solid fertilizer. AT37239B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT37239T 1908-03-31

Publications (1)

Publication Number Publication Date
AT37239B true AT37239B (en) 1909-05-10

Family

ID=3554509

Family Applications (1)

Application Number Title Priority Date Filing Date
AT37239D AT37239B (en) 1908-03-31 1908-03-31 Process for the production of a nitrogen- and phosphorus-containing solid fertilizer.

Country Status (1)

Country Link
AT (1) AT37239B (en)

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