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2 411 186

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IPC

C01G9/02(2006-01-01)

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Application

2009108871/05, 2009-03-10

(24)

Start date

2009-03-10

(22)

Actual filing date

2009-03-10

(45)

Published

2011-02-10

(72)

Inventor

Kononov Dmitrij BorisovichGilev Aleksandr NikolaevichSmirnov Dmitrij Vasil'EvichMorozov Oleg Anatol'EvichTimofeev Dmitrij Vasil'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Ob"Edinenie Zavod"

METHOD OF PRODUCING Zn ISOTOPE-DEPLETED ZINC OXIDE, CLEANED FROM TIN AND CARBON IMPURITIES Russian patent published in 2011 - IPC C01G9/02

Abstract RU 2411186 C2

FIELD: chemistry.

SUBSTANCE: invention relates to production of zinc oxide depleted of the Zn⁶⁴ isotope, used as an additive in nuclear reactor cooling systems. Zinc oxide powder obtained through hydrolysis of Zn⁶⁴ isotope-depleted diethyl zinc is washed with high purity hexane in amount of 0.005-0.006 m³ per kg of zinc hydroxide, then dried at temperature 120-160°C for 12-16 hours and calcined at temperature 340-370°C for 14-16 hours.

EFFECT: invention enables to lower content of tin impurities in zinc oxide to less than 10^-3 wt % and carbon impurities to less than 0,025 wt %.

3 ex

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RU 2 411 186 C2

Authors

Kononov Dmitrij Borisovich

Gilev Aleksandr Nikolaevich

Smirnov Dmitrij Vasil'Evich

Morozov Oleg Anatol'Evich

Timofeev Dmitrij Vasil'Evich

Dates

2011-02-10—Published

2009-03-10—Filed