METHOD OF PRODUCTION OF AMMONIUM SULFATE NITRATE

METHOD OF PRODUCTION OF AMMONIUM SULFATE NITRATE

FIELD: methods of production of fertilizers containing nitrogen and sulfate sulfur on base of nitrate and ammonium sulfate, production of double type NS fertilizers referred to as " sulfate nitrate". SUBSTANCE: proposed method includes mixing of concentrated ammonium nitrate solution at te...

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Bibliographische Detailangaben
Hauptverfasser: KISELEVICH P.V, LOGINOV N.D, SINICHENKOV V.F, AFANASENKO B.P, LAVERZHENTSEVA I.V, SHUSTOV V.V, DEDOV A.S, SEZEMIN V.A, MOLODTSOV G.A, DREMOV A.V, VANDYSHEV S.A, ZAKHAROV V.JU, MACHEKHIN G.N, ABRAMOV O.B, TSEPELEV E.A
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:FIELD: methods of production of fertilizers containing nitrogen and sulfate sulfur on base of nitrate and ammonium sulfate, production of double type NS fertilizers referred to as " sulfate nitrate". SUBSTANCE: proposed method includes mixing of concentrated ammonium nitrate solution at temperature of 100-170 C with ammonium sulfate, addition of alkali reagent such as aqueous solution of caustic soda and granulation and drying of target product; content of water in concentrated ammonium nitrate before mixing is maintained within 11- 30% and within 7-15% in mixture before granulation and drying; initial components are preliminarily mixed for 4-10 minutes at preferable temperature of 91-110 C; temperature of heating gases at inlet of drum- type granulator-drier is maintained within 160-220 C. Alkali reagent is added directly to reactor-mixer or is introduced preliminarily into concentrated ammonium nitrate solution. EFFECT: reduction of caking by 3-5 times as compared with prototype. 6 cl, 2 ex