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2 557 594

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IPC

C01G25/00(2006-01-01)

C01G27/00(2006-01-01)

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Application

2013151064/05, 2013-11-15

(24)

Start date

2013-11-15

(22)

Actual filing date

2013-11-15

(45)

Published

2015-07-27

(72)

Inventor

Vasil'Ev Dmitrij IvanovichKoparulina Elena SemenovnaLikhacheva Ol'Ga Gennad'EvnaMoskalenko Oleg PetrovichSviridov Aleksandr MikhajlovichSinegribova Oksana Afanas'EvnaShavkunova Marija Jur'EvnaShtutsa Mikhail Georgievich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Mekhanicheskij Zavod"

METHOD OF EXTRACTING ZIRCONIUM AND HAFNIUM Russian patent published in 2015 - IPC C01G25/00 C01G27/00

Abstract RU 2557594 C2

FIELD: chemistry.

SUBSTANCE: method of extracting zirconium and hafnium from process solutions to obtain an extract for further extraction of said elements includes combined extraction of zirconium and hafnium from nitrate solutions with tributyl phosphate solutions in an organic diluent based on unsaturated aromatic hydrocarbons. Extraction is carried out with concentration of tributyl phosphate in the diluent of 75-90 vol % from solutions with nitric acid concentration of 400-450 g/dm³.

EFFECT: high efficiency of the extraction process.

3 cl, 8 ex

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RU 2 557 594 C2

Authors

Vasil'Ev Dmitrij Ivanovich

Koparulina Elena Semenovna

Likhacheva Ol'Ga Gennad'Evna

Moskalenko Oleg Petrovich

Sviridov Aleksandr Mikhajlovich

Sinegribova Oksana Afanas'Evna

Shavkunova Marija Jur'Evna

Shtutsa Mikhail Georgievich

Dates

2015-07-27—Published

2013-11-15—Filed