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Application

97116471/25, 1997-10-07

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Actual filing date

1997-10-07

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Published

1999-07-20

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Inventor

Safrygin Ju.S.Osipova G.V.Buksha Ju.V.Timofeev V.I.Rutkovskaja T.I.Poliksha A.M.Konoplev E.V.Makhnev V.B.Frolov N.P.Al'Zhev I.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF PREPARING POTASSIUM SULFATE Russian patent published in 1999 - IPC

Abstract RU 2133220 C1

FIELD: chemical industry. SUBSTANCE: method comprises reacting ammonium sulfate solution with potassium chloride suspension to isolate double salt of potassium sulfates, namely ammonium, treating it with 5-15% aqueous solution of potassium chloride at L:S ratio of 0.7-1.5, depositing potassium sulfate on filter, washing and drying it. Reaction of solution with ammonium sulfate is carried out with potassium chloride suspension containing insoluble impurities in flotation machine in the presence of flotation agents, and washing of potassium sulfate is carried out with water and/or by evaporating precipitate on filter. EFFECT: use of slurry contaminated potassium chloride, simplified process, and reduced power consumption. 2 cl, 5 ex

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RU 2 133 220 C1

Authors

Safrygin Ju.S.

Osipova G.V.

Buksha Ju.V.

Timofeev V.I.

Rutkovskaja T.I.

Poliksha A.M.

Konoplev E.V.

Makhnev V.B.

Frolov N.P.

Al'Zhev I.A.

Dates

1999-07-20—Published

1997-10-07—Filed

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