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2 314 278

(13)

(51)

IPC

C05B11/08(2006-01-01)

(21) (22)

Application

2006109851/15, 2006-03-29

(24)

Start date

2006-03-29

(22)

Actual filing date

2006-03-29

(45)

Published

2008-01-10

(72)

Inventor

Kazak Vladimir Grigor'EvichBrizitskaja Natal'Ja MitrofanovnaGrishaev Igor' Grigor'EvichMaljavin Andrej StanislavovichLjudkov Aleksandr Arsen'EvichKozlova Anna MikhajlovnaSegen Nikolaj NikolaevichPervinkin Valerij Evgen'Evich

(73)

Holder

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

METHOD OF MANUFACTURING GRANULATED COMPLEX FERTILIZER Russian patent published in 2008 - IPC C05B11/08

Abstract RU 2314278 C1

FIELD: mineral fertilizers.

SUBSTANCE: invention, in particular, relates to superphosphate-type NP fertilizer, manufacture of which involves decomposing apatite with sulfuric acid to form phosphate pulp. The latter is divided into two parts. One of them is filtered to separate phosphoric acid, which is mixed with remaining part of the phosphate pulp. To resulting mix is added low-grade phosphate raw material and sulfuric acid in proportions ensuring ratio of P₂O₅ of the mix to P₂O₅ of the phosphate raw material to be (2-9):1. Thus obtained pulp is ammonized to pH 4.0-5.0, granulated, and dried.

EFFECT: enabled manufacture of prolonged-life fertilizer with improved physicomechanical properties at lower cost.

2 cl, 3 ex

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RU 2 314 278 C1

Authors

Kazak Vladimir Grigor'Evich

Brizitskaja Natal'Ja Mitrofanovna

Grishaev Igor' Grigor'Evich

Maljavin Andrej Stanislavovich

Ljudkov Aleksandr Arsen'Evich

Kozlova Anna Mikhajlovna

Segen Nikolaj Nikolaevich

Pervinkin Valerij Evgen'Evich

Dates

2008-01-10—Published

2006-03-29—Filed