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2 188 844

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Application

2001111968/12, 2001-04-27

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Start date

2001-04-27

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Actual filing date

2001-04-27

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Published

2002-09-10

(72)

Inventor

Dmitrevskij B.A.Treushchenko N.N.Jur'Eva V.I.Platonov A.I.Lebed' V.V.Leont'Ev S.V.Shvetsov O.V.Ivanova N.Ja.Nikolenko T.V.Rjazanova V.V.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD OF PRODUCTION OF NITROGEN-PHOSPHORUS FERTILIZERS Russian patent published in 2002 - IPC

Abstract RU 2188844 C1

FIELD: fertilizers. SUBSTANCE: invention relates to a method of production of complex fertilizers, in part, urea-containing nitrogen-phosphorus fertilizers. Method of production of nitrogen- phosphorus fertilizer involves neutralization of phosphoric acid with ammonia, mixing with urea, granulation and drying the ready product. Sulfuric acid and/or ammonium sulfate are fed to neutralization zone and urea is added at the stage of granulation and drying up to the ratio = CO(NH2)2 : P2O5 : SO3 = (0.32-1.58) : 1 : (0.11-1.87), respectively. Method ensures to improve physical properties of fertilizers, caking value of fertilizer is 50-70 kPa and hygroscopicity coefficient is 1-1.5. EFFECT: improved method of production and properties of fertilizer. 1 tbl, 3 ex

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RU 2 188 844 C1

Authors

Dmitrevskij B.A.

Treushchenko N.N.

Jur'Eva V.I.

Platonov A.I.

Lebed' V.V.

Leont'Ev S.V.

Shvetsov O.V.

Ivanova N.Ja.

Nikolenko T.V.

Rjazanova V.V.

Dates

2002-09-10—Published

2001-04-27—Filed

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