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2 085 494

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C1

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IPC

(21) (22)

Application

95111983/25, 1995-07-11

(22)

Actual filing date

1995-07-11

(45)

Published

1997-07-27

(72)

Inventor

Lebedev V.N.Lokshin Eh.P.Shevyreva E.V.

(73)

Holder

Institut Khimii I Tekhnologii Redkikh Ehlementov I Mineral'Nogo Syr'Ja Kol'Skogo Nauchnogo Tsentra Ran

METHOD OF PRODUCING FLUORINE PURIFIED OF CERIUM NITRATE Russian patent published in 1997 - IPC

Abstract RU 2085494 C1

FIELD: technology of rare-earth elements. SUBSTANCE: after Ce4+ extraction with organic solvent from fluoro-containing solution acid nitrate solution is treated with reagent up to pH = 3.0-5.2. The used reagent is alkaline metal or ammonium carbonate. For treatment of nitrate solution cerium carbonate or hydroxide can be used also. EFFECT: improved method of producing. 3 cl

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RU 2 085 494 C1

Authors

Lebedev V.N.

Lokshin Eh.P.

Shevyreva E.V.

Dates

1997-07-27—Published

1995-07-11—Filed

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