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2 196 120

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IPC

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Application

2001134213/12, 2001-12-11

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Start date

2001-12-11

(22)

Actual filing date

2001-12-11

(45)

Published

2003-01-10

(72)

Inventor

Dmitrevskij B.A.Treushchenko N.N.Lebed' V.V.Jur'Eva V.I.Leont'Ev S.V.Morozov V.I.Rjazanova V.V.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

AMMOPHOS PRODUCTION PROCESS Russian patent published in 2003 - IPC

Abstract RU 2196120 C1

FIELD: fertilizers. SUBSTANCE: process involves double-step neutralization of extraction phosphoric acid by ammonia including separation of first-step precipitate, evaporation of solutions, granulation, and drying of final product, 60-95% of extraction phosphoric acid being fed into neutralization zone with pH 5.6-6.5 and liquid phase after separation of precipitate being mixed with the rest of extraction phosphoric acid. Separated precipitate shows elevated sedimentation properties. EFFECT: enabled production of high-quality ammophos from any phosphate stock. 1 tbl, 4 ex

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RU 2 196 120 C1

Authors

Dmitrevskij B.A.

Treushchenko N.N.

Lebed' V.V.

Jur'Eva V.I.

Leont'Ev S.V.

Morozov V.I.

Rjazanova V.V.

Dates

2003-01-10—Published

2001-12-11—Filed