DE351130C - Process for the production of air-resistant mixed fertilizers - Google Patents

Process for the production of air-resistant mixed fertilizers

Info

Publication number
DE351130C
DE351130C DE1917351130D DE351130DD DE351130C DE 351130 C DE351130 C DE 351130C DE 1917351130 D DE1917351130 D DE 1917351130D DE 351130D D DE351130D D DE 351130DD DE 351130 C DE351130 C DE 351130C
Authority
DE
Germany
Prior art keywords
production
air
mixed fertilizers
resistant mixed
ammonium
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
DE1917351130D
Other languages
German (de)
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Application granted granted Critical
Publication of DE351130C publication Critical patent/DE351130C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/02—Superphosphates

Description

Verfahren zur Herstellung luftbeständiger Mischdünger: Es wurde gefunden, daß Gemische von Superphosphat mit Amrnoniumnitrat, die bisher ihrer feuchten bzw. zerfließlichen Beschaffenheit wegen nicht für Düngezwecke angewendet werden konnten, diese nachteilige Eigenschaft nicht mehr besitzen, wenn man bei der Herstellung der Gemische oder nachträglich basisch wirkende Stoffe zugibt. Als solche kommen z. B. Kalk, Kalziumkarbonat, Magnesia und noch besser Ammoniak, besonders vorteilhaft in Form von Amrnoniumkarbonat, in Betracht. Die erhaltenen Gemische sind völlig trocken, kit streufähig und auch an feuchter Luft gut beständig. Beispiel. ioo Teile eines Superphosphats mit 6 Prozent freier Säure werden reit 8 Teilen AmmoniumWkarbonat und 40 bis 5o Teilen Ammoniumnitrat vermischt. Man kann die Menge des Ammoniumkarbonats einerseits noch etwas geringer, andererseits auch noch höher wählen, indem die freie Säure auf alle Fälle abzustumpfen ist, ein etwaiger Überschuß aber vorteilhaft nicht allzu hoch genommen wird.Process for the production of air-resistant mixed fertilizers: It was found that mixtures of superphosphate with ammonium nitrate, which have so far been their moist or could not be used for fertilization purposes because of their deliquescent nature, no longer possess this disadvantageous property when one is in the process of manufacturing who adds mixtures or subsequently basic substances. Come as such z. B. lime, calcium carbonate, magnesia and even better ammonia, are particularly beneficial in the form of ammonium carbonate. The mixtures obtained are complete dry, kit spreadable and also well resistant in humid air. Example. ioo parts Of a superphosphate with 6 percent free acid, 8 parts of ammonium carbonate are used and 40 to 50 parts of ammonium nitrate mixed. One can determine the amount of ammonium carbonate on the one hand a little lower, on the other hand also choose even higher by the free Acid is to be blunted in any case, but a possible excess is not advantageous is taken too high.

Man hat schon durch Behandlung mit Schwefelsäure aufgeschlossene Phosphate mit Ammoniak versetzt. Die hierbei entstehenden Massen bestehen im wesentlichen aus Ammoniumphosphat, Ammoniumsulfat und Kalziumphosphat. Ihnen gegenüber bieten die gemäß vorliegender Erfindung erhältlichen Erzeugnisse den Vorteil, daß sie nicht nur Atimoniakstickstoff, sondern auch Salpeterstickstoff enthalten, was für Düngezwecke von wesentlicher Bedeutung sein kann. Außerdem konnten aber jene Produl@te auch keinerlei Anhaltspunkte dafür liefern, daß es möglich sein werde, die h1ischungen von Superphosphat und Ammoniumnitrat, die infolge ihrer ungünstigen hygroskopischen Eigenschaften als Düngemittel unbrauchbar sind, dadurch in hervorragendem Maße brauchbar zu machen, daß man sie mit basisch wirkenden Stoffen zusammenbringt. Solche Anhaltspunkte konnte auch nicht die Angabe bieten, daß Kalziumnitrat mit Kalk, Gips o. dgl. erhitzt weniger hygroskopisch gemacht werden könne.Phosphates have already been digested by treatment with sulfuric acid mixed with ammonia. The resulting masses essentially exist from ammonium phosphate, ammonium sulfate and calcium phosphate. Offer to you the products obtainable according to the present invention have the advantage that they do not only contain atimonia nitrogen, but also nitric nitrogen, which is used for fertilization purposes can be essential. But those produl @ te could also provide no indication that the allegations will be possible of superphosphate and ammonium nitrate, which as a result of their unfavorable hygroscopic Properties as fertilizers are useless, thus usable to an excellent degree to make that you bring them together with basic substances. Such clues could also not offer the statement that calcium nitrate is heated with lime, gypsum or the like can be made less hygroscopic.

Claims (1)

PATENT-ANSPRUcH: Verfahren zur Herstellung luftbeständiger Mischdünger, dadurch gekennzeichnet, daß man Gemischen von Superphosphat mit Ammoniumnitrat bei der Herstellung oder nachträglich basisch wirkende Stoffe,. insbesondere Ammoniumkarbonat, zufügt.PATENT CLAIM: Process for the production of air-resistant mixed fertilizers, characterized in that mixtures of superphosphate with ammonium nitrate are used the production or afterwards basic acting substances. especially ammonium carbonate, inflicts.
DE1917351130D 1917-03-27 1917-03-27 Process for the production of air-resistant mixed fertilizers Expired DE351130C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE351130T 1917-03-27

Publications (1)

Publication Number Publication Date
DE351130C true DE351130C (en) 1922-04-01

Family

ID=6266602

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1917351130D Expired DE351130C (en) 1917-03-27 1917-03-27 Process for the production of air-resistant mixed fertilizers

Country Status (1)

Country Link
DE (1) DE351130C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415464A (en) * 1943-07-03 1947-02-11 Solvay Process Co Process for ammoniating acid phosphates
US2439432A (en) * 1943-09-27 1948-04-13 Du Pont Ammoniation of fertilizers
DE930088C (en) * 1951-09-13 1955-07-11 Kalk Chemische Fabrik Gmbh Process for the production of mixed fertilizers
DE966114C (en) * 1951-02-02 1957-07-11 Potasse & Engrais Chimiques Process for avoiding deterioration in solubility of phosphate fertilizers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415464A (en) * 1943-07-03 1947-02-11 Solvay Process Co Process for ammoniating acid phosphates
US2439432A (en) * 1943-09-27 1948-04-13 Du Pont Ammoniation of fertilizers
DE966114C (en) * 1951-02-02 1957-07-11 Potasse & Engrais Chimiques Process for avoiding deterioration in solubility of phosphate fertilizers
DE930088C (en) * 1951-09-13 1955-07-11 Kalk Chemische Fabrik Gmbh Process for the production of mixed fertilizers

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