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2 038 310

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IPC

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Application

5057521/26, 1992-08-04

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Actual filing date

1992-08-04

(45)

Published

1995-06-27

(72)

Inventor

Ivanov A.V.Ivanov V.S.Makarenko Ju.A.Mashirev V.P.Kozlov A.M.Kozlov A.N.Rjazanov B.V.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Khimicheskoj Tekhnologii

METHOD OF PRODUCING RARE-EARTH METALS AND YTTRIUM FLUORIDES Russian patent published in 1995 - IPC

Abstract RU 2038310 C1

FIELD: rare-earth metals preparing. SUBSTANCE: oxalates, carbonates, hydroxides or active oxides of rare-earth metals were prepared by decomposition of oxalates or carbonates at temperature 600 C (not more) and hydrofluorinated with hydrogen fluoride at 380-550 C. EFFECT: improved method of fluorides producing. 6 cl

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RU 2 038 310 C1

Authors

Ivanov A.V.

Ivanov V.S.

Makarenko Ju.A.

Mashirev V.P.

Kozlov A.M.

Kozlov A.N.

Rjazanov B.V.

Dates

1995-06-27—Published

1992-08-04—Filed

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