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2 069 209

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IPC

(21) (22)

Application

93047141/26, 1993-10-11

(22)

Actual filing date

1993-10-11

(45)

Published

1996-11-20

(72)

Inventor

Ledovskoj V.I.Kozlov V.I.Buloshnikova L.F.Kajl' V.Ja.Avramenko A.N.Katkov V.I.Zakusilo V.Ju.Kopyleva B.B.Bulavinov A.V.

(73)

Holder

Aktsionernoe Obshchestvo Azot"Kopyleva B.B.

PROCESS FOR PREPARING NITROGEN-PHOSPHORIC FERTILIZER Russian patent published in 1996 - IPC

Abstract RU 2069209 C1

FIELD: agriculture. SUBSTANCE: nitrogen-phosphoric fertilizer is prepared by neutralization of phosphoric acid-phosphorus gypsum mixture with ammonia followed by granulation and drying of product. Neutralization is carried out in the presence of sulfate soap in amount of 0.06-0.4% by weight of phosphorus gypsum, and granulation is carried out in the presence of recycle. Phosphorus gypsum is used in amount of 9.5-60% by weight of the mixture and 10-90% of said phosphorus gypsum is introduced in recycle. The fertilizer contain greater amounts of nutrients. EFFECT: improved properties of the nitrogen-phosphoric fertilizer. 3 cl, 1 tbl

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RU 2 069 209 C1

Authors

Ledovskoj V.I.

Kozlov V.I.

Buloshnikova L.F.

Kajl' V.Ja.

Avramenko A.N.

Katkov V.I.

Zakusilo V.Ju.

Kopyleva B.B.

Bulavinov A.V.

Dates

1996-11-20—Published

1993-10-11—Filed