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2 263 091

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IPC

(21) (22)

Application

2004103817/15, 2004-02-11

(24)

Start date

2004-02-11

(22)

Actual filing date

2004-02-11

(45)

Published

2005-10-27

(72)

Inventor

Grishaev I.G.Grinevich V.A.Kolpakov Ju.A.Rezen'Kov M.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Institut Po Udobrenijam I Insektofungitsidam Im. Prof. Ja.V. Samojlova"

METHOD OF PRODUCING AMMOPHOS Russian patent published in 2005 - IPC

Abstract RU 2263091 C1

FIELD: chemical industry.

SUBSTANCE: method comprises neutralizing phosphate acid by ammonium, granulating, drying the product in the drum granulator-dryer, classifying granules, and cooling the finished product in a fluidized bed, with supplying ammonium for neutralizing in amount that exceeds the value required for the product by 0.2-0.5% (on conversion to nitrogen). The finished product is cooled under the rarefication of 300-600 mm Hg, and the fluidized bed is blown by the atmospheric air produced in the rarefication.

EFFECT: enhanced efficiency.

3 ex

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RU 2 263 091 C1

Authors

Grishaev I.G.

Grinevich V.A.

Kolpakov Ju.A.

Rezen'Kov M.I.

Dates

2005-10-27—Published

2004-02-11—Filed