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IPC

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Application

95118281/25, 1995-10-25

(22)

Actual filing date

1995-10-25

(45)

Published

1998-01-20

(72)

Inventor

Treushchenko N.N.Dmitrevskij B.A.Filimonov A.A.Fedotov I.Ju.Jur'Eva V.I.Degtjarev I.K.

(73)

Holder

Zakrytoe Aktsionernoe ObshchestvoAktsionernoe Obshchestvo Otkrytogo Tipa

METHOD OF GRANULATED SUPERPHOSPHATE PRODUCING Russian patent published in 1998 - IPC

Abstract RU 2102361 C1

FIELD: fertilizers. SUBSTANCE: invention relates to processing dolomitized phosphate raw containing 26-28% P2O5 and 2.5-3% MgO (as measured for granulated superphosphate). After preliminary classification stage the large raw fraction at ratio solid : liquid = (1.04-1.85):1 is treated with sulfuric acid. For neutralization small fraction of phosphate raw (particle size is 0.02-0.1 mm) is fed. Ready product has at least 15% P2O5 at 1.5-1.7% bound P2O5. EFFECT: intensified process, decreased energy consumption. 2 tbl

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RU 2 102 361 C1

Authors

Treushchenko N.N.

Dmitrevskij B.A.

Filimonov A.A.

Fedotov I.Ju.

Jur'Eva V.I.

Degtjarev I.K.

Dates

1998-01-20—Published

1995-10-25—Filed

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