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2 259 979

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Application

2004126126/15, 2004-08-26

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Start date

2004-08-26

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Actual filing date

2004-08-26

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Published

2005-09-10

(72)

Inventor

Sukhanov A.I.Makarov S.E.Cheremisinov S.D.Berdichevskij N.I.Melikhov Ju.A.Kylosov S.I.Kostjusheva S.V.Bezbog V.M.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR PREPARING AMMONIUM-CALCIUM NITRATE Russian patent published in 2005 - IPC

Abstract RU 2259979 C1

FIELD: mineral fertilizers, chemical technology.

SUBSTANCE: invention relates to industry for producing mineral fertilizers. Method for preparing ammonium-calcium nitrate (saltpeter) involves the neutralization reaction of nitric acid with ammonia, addition of calcium nitrate, evaporation of solution and granulation of the melt. Calcium nitrate is added before the neutralization stage by dissolving calcium carbonate or oxide in nitric acid under condition providing the maintenance of the concentration of calcium nitrate solution in nitric acid in the range 5-20 wt.-% followed by neutralization of the prepared solution. Invention provides preparing the product exhibiting the high strength of granules and with reduced consumptions due to using the inexpensive calcium raw and reducing energy consumption in the evaporation stage.

EFFECT: improved preparing method.

1 dwg, 3 ex

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RU 2 259 979 C1

Authors

Sukhanov A.I.

Makarov S.E.

Cheremisinov S.D.

Berdichevskij N.I.

Melikhov Ju.A.

Kylosov S.I.

Kostjusheva S.V.

Bezbog V.M.

Dates

2005-09-10—Published

2004-08-26—Filed

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