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2 230 718

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IPC

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Application

2003120025/15, 2003-07-07

(24)

Start date

2003-07-07

(22)

Actual filing date

2003-07-07

(45)

Published

2004-06-20

(72)

Inventor

Cherkasova T.N.Grosheva L.P.Gorshkova N.V.Nikolaeva I.I.Maklashina E.A.Samsonov Ju.K.Lysenko E.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR PREPARING COMPLEX FERTILIZERS Russian patent published in 2004 - IPC

Abstract RU 2230718 C1

FIELD: fertilizers, chemical technology.

SUBSTANCE: invention relates to methods for preparing mineral fertilizers, in particular, chlorine-free nitrogen-potassium fertilizers. Method for preparing the complex fertilizer in the process for preparing ammonium nitrate by conversion of calcium nitrate with ammonium carbonate involves replacing 4-21% of ammonium carbonate for potassium carbonate and after the mixed conversion the solution is prepared with mass part of salts sum 60 ± 5% and this solution contains potassium nitrate and ammonium nitrate in the mass ratio = (5-25):(95-75), respectively. The prepared solution is used as the liquid complex fertilizer or water is evaporated and product is granulated by prilling method. Invention provides simplifying method for preparing nitrogen-potassium fertilizer comprising potassium nitrate and ammonium nitrate and enhancing its economy.

EFFECT: improved preparing method.

3 cl, 1 ex

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RU 2 230 718 C1

Authors

Cherkasova T.N.

Grosheva L.P.

Gorshkova N.V.

Nikolaeva I.I.

Maklashina E.A.

Samsonov Ju.K.

Lysenko E.V.

Dates

2004-06-20—Published

2003-07-07—Filed

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