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2 255 042

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IPC

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Application

2004124216/15, 2004-08-10

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Start date

2004-08-10

(22)

Actual filing date

2004-08-10

(45)

Published

2005-06-27

(72)

Inventor

Brodskij A.A.Rodin V.I.Levin B.V.Litusova N.M.Grishaev I.G.Grinevich V.A.Davydenko V.V.

(73)

Holder

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

MONOCALCIUM PHOSPHATE PRODUCTION PROCESS Russian patent published in 2005 - IPC

Abstract RU 2255042 C1

FIELD: industrial inorganic synthesis.

SUBSTANCE: monocalcium phosphate, widely applied in agriculture, is prepared by mixing extraction phosphoric acid with calcium-containing component followed by granulation and drying of product. During mixing of components, appropriate temperature and moisture are maintained to ensure viscosity of mixture 3-7 mPa*s, and granulation and drying are carried out simultaneously in drum-type granulator drier. Calcium-containing component is either calcium carbonate or mixture thereof with limestone, whose does not exceed 15% of total weight of calcium-containing raw material. Moisture content in worked out drying agent leaving drum-type granulator drier equals 70-80 g per 1 kg dry air.

EFFECT: simplified process flowsheet, enabled granule size control, and increased strength of granules.

3 cl, 3 ex

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RU 2 255 042 C1

Authors

Brodskij A.A.

Rodin V.I.

Levin B.V.

Litusova N.M.

Grishaev I.G.

Grinevich V.A.

Davydenko V.V.

Dates

2005-06-27—Published

2004-08-10—Filed