COMPLEX NITROGEN PHOSPHORIC MINERAL FERTILIZER AND METHOD OF PREPARING THEREOF

agriculture, more particularly application in any soils. SUBSTANCE: fertilizer comprises nutrient substances, wt %: nitrogen, 33 1; phosphorus pentoxide, 2-6 ammonium nitrate, 92.5 3; monoammonum phosphate,6.5 3.2; and ammonium sulfate, 0.02-2.0. Fertilizer is prepared by stepwise neutralization wit...

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Bibliographische Detailangaben
Hauptverfasser:	ZUB V.V, KISELEVICH P.V, GUTERMAN MIKHAIL DMITRIEVICH, LOGINOV N.D, SUCHKOV V.A, KRASHUNSKIJ LEONID MIKHAJLOVICH, DROZHDIN B.I, DEDOV A.S, UTKIN V.V, SEZEMIN V.A, VULIS FELIKS, JUZHANIN G.A, TEL'KINA A.V, MACHEKHIN G.N, ABRAMOV O.B, TERESHCHENKO O.L
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM MANUFACTURE THEREOF METALLURGY MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS NITROGENOUS FERTILISERS
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Beschreibung
Zusammenfassung:	agriculture, more particularly application in any soils. SUBSTANCE: fertilizer comprises nutrient substances, wt %: nitrogen, 33 1; phosphorus pentoxide, 2-6 ammonium nitrate, 92.5 3; monoammonum phosphate,6.5 3.2; and ammonium sulfate, 0.02-2.0. Fertilizer is prepared by stepwise neutralization with addition of phosphoric and sulfuric acids, evaporation of neutralized solution and granulation of desired product. Use is made of phosphoric acid resulting from sulfuric acid decomposition of natural calcium phosphate and which is added in amount of 20-60 Kg calculated for P2O5 per 1 t of desired product into reactor above ammonia-nitric acid mixing zone, and neutralization in first stage is carried out to residual acidity of 8-40 g/l calculated for nitric acid. EFFECT: higher content of phosphorus in water - soluble form in fertilizer and use of readily available stock, namely extraction phosphoric acid. 3 cl, 1 ex