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2 154 026

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IPC

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Application

98111164/12, 1998-06-11

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Start date

1998-06-11

(22)

Actual filing date

1998-06-11

(45)

Published

2000-08-10

(72)

Inventor

Safrygin Ju.S.Osipova G.V.Buksha Ju.V.Timofeev V.I.Rutkovskaja T.I.Zinjuk R.Ju.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Vserossijskij Nauchno-Issledovatel'Skij I Proektnyj Institut Galurgii

METHOD OF PREPARING POTASSIUM SULFATE Russian patent published in 2000 - IPC

Abstract RU 2154026 C2

FIELD: technology of preparing potassium sulfate. SUBSTANCE: sulfate salts are first dissolved. Potassium sulfate is added to solution to adjust L: S ratio at 5-10, and the resulting suspension is treated without heating with potassium- containing carbonate products in potash to sodium sulfate ratio of 4-5:1. Sulfate salts are used in the form of sodium sulfate, glazerite or sodium sulfate with soda admixture invention makes it possible to simplify process and to obtain potassium sulfate of improved granulometric composition. EFFECT: more efficient preparation method. 2 cl, 8 ex

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RU 2 154 026 C2

Authors

Safrygin Ju.S.

Osipova G.V.

Buksha Ju.V.

Timofeev V.I.

Rutkovskaja T.I.

Zinjuk R.Ju.

Dates

2000-08-10—Published

1998-06-11—Filed