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2 149 141

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Application

98110754/12, 1998-06-08

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Start date

1998-06-08

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Actual filing date

1998-06-08

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Published

2000-05-20

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Inventor

Safrygin Ju.S.Osipova G.V.Buksha Ju.V.Timofeev V.I.Terent'Eva G.I.Poliksha A.M.Chistjakov A.A.Konoplev E.V.Konovalov V.I.D'Jakov S.P.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF DEHYDRATION OF SYNTHETIC CARNALLITE Russian patent published in 2000 - IPC

Abstract RU 2149141 C1

FIELD: chemical, metallurgical and petroleum industries; preparation of potassium-magnesium fertilizers. SUBSTANCE: synthetic carnallite comprises, wt. %: MgCl2, 32.62; KCl, 24.4; NaCl, 3.58; H2O; 39.4. Synthetic carnallite is suspended in bishofite which comprises, wt.%: MgCl2, 32.33; KCl, 0.26; NaCl, 1.32, and H2O, 66.09 under vigorous stirring, L/S ratio is 1.3. Suspension is fed into single-chamber fluidized bed apparatus with dehydrated carnallite. Rate of gases is up to 3 m/s. Temperature in fluidized bed ranges from 120-175 C. Dehydrated carnallite is withdrawn through discharged device and cyclones to obtain product which comprises, wt.%: MgCl2, 52.01; KCl, 8.25; MgO, 0.34; NaCl, 3.02; H2O, 36.38. Product is homogeneous and has predetermined KCl: MgCl2 ratio. Process is simple. EFFECT: more efficient dehydration method. 3 cl, 6 ex, 1 tbl

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RU 2 149 141 C1

Authors

Safrygin Ju.S.

Osipova G.V.

Buksha Ju.V.

Timofeev V.I.

Terent'Eva G.I.

Poliksha A.M.

Chistjakov A.A.

Konoplev E.V.

Konovalov V.I.

D'Jakov S.P.

Dates

2000-05-20—Published

1998-06-08—Filed

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