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2 126 374

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IPC

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Application

97108348/25, 1997-05-20

(22)

Actual filing date

1997-05-20

(45)

Published

1999-02-20

(72)

Inventor

Dmitrevskij B.A.Treushchenko N.N.Filimonov A.A.Dremov A.V.Jur'Eva V.I.Ivanova N.Ja.Shvetsov O.V.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD OF PRODUCING AMMONIUM SULFATE-PHOSPHATE FERTILIZER Russian patent published in 1999 - IPC

Abstract RU 2126374 C1

FIELD: production of complex fertilizers, in particular, nitrogen-phosphorus-ammonium sulfate-phosphate fertilizer. SUBSTANCE: method includes neutralization of phosphoric and sulfuric acids with ammonia; granulation and drying of ready-made product. Sulfuric acid with concentration of 70-93% is supplied to zone of neutralization of phosphoric acid with pH 4.6-5.8. Fertilizer characteristics is the following: hygroscopic coefficient, 1: composition of ready-made product: assimilation % of P₂O₅, 20-31; N, 15-17.14; N : P₂O₅ = 0.48-0.86. EFFECT: preserved high physical properties of fertilizer with reduced process duration. 1 tbl

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RU 2 126 374 C1

Authors

Dmitrevskij B.A.

Treushchenko N.N.

Filimonov A.A.

Dremov A.V.

Jur'Eva V.I.

Ivanova N.Ja.

Shvetsov O.V.

Dates

1999-02-20—Published

1997-05-20—Filed