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Application

2000111101/12, 2000-05-03

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Start date

2000-05-03

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Actual filing date

2000-05-03

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Published

2001-07-27

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Inventor

Drozhdin B.I.Dedov A.S.Zub V.V.Machekhin G.N.Utkin V.V.Loginov N.D.Abramov O.B.Gol'Dinov A.L.Afanasenko E.V.Sezemin V.A.Shustov V.V.Molodtsov G.A.Kiselevich P.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Khimicheskij Kombinat Im. B.P. Konstantinova"

METHOD OF PREPARING COMPLEX FERTILIZER Russian patent published in 2001 - IPC

Abstract RU 2171245 C1

FIELD: manufacture of complex mineral fertilizers by nitric acid processing of natural phosphates. SUBSTANCE: nitric acid is divided into two 2 streams. From one of streams calcium nitrate is removed by crystallization during cooling operation and by filtration, mother liquor is mixed with second stream of nitric acid extract and processed into fertilizer using ammonation, drying and granulation to prepare fertilizer with reduced amount of water-soluble P2O5 from total amount of P2O5. EFFECT: more efficient preparation method. 2 ex

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RU 2 171 245 C1

Authors

Drozhdin B.I.

Dedov A.S.

Zub V.V.

Machekhin G.N.

Utkin V.V.

Loginov N.D.

Abramov O.B.

Gol'Dinov A.L.

Afanasenko E.V.

Sezemin V.A.

Shustov V.V.

Molodtsov G.A.

Kiselevich P.V.

Dates

2001-07-27—Published

2000-05-03—Filed

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