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2 121 975

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Application

97120602/25, 1997-12-11

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Actual filing date

1997-12-11

(45)

Published

1998-11-20

(72)

Inventor

Shatalov V.V.Mashirev V.P.Panin V.V.Zvonarev E.N.Kozlov O.I.Lobanov V.I.Goronkov O.A.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Khimicheskoj Tekhnologii

METHOD OF PREPARING ANHYDROUS IRON TRIFLUORIDE Russian patent published in 1998 - IPC

Abstract RU 2121975 C1

FIELD: manufacture of alloys for magnets based on neodymium, iron and boron. SUBSTANCE: iron oxychloride resulting from heat treatment of iron chloride hexahydrate is subjected to fluorination 160-180 C, fluorination being carried out at temperatures ranging from 120 to 180 C, fluorination layer should bot be more than 5-6 mm high. The claimed method makes it possible to increase conversion of original products to 96-99.5%, decrease fluorination temperature and make process more efficient. EFFECT: more efficient preparation method. 2 cl, 4 ex, 4 tbl

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RU 2 121 975 C1

Authors

Shatalov V.V.

Mashirev V.P.

Panin V.V.

Zvonarev E.N.

Kozlov O.I.

Lobanov V.I.

Goronkov O.A.

Dates

1998-11-20—Published

1997-12-11—Filed

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