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2 301 275

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IPC

C22B34/34(2006-01-01)

C22B9/04(2006-01-01)

C22B7/00(2006-01-01)

(21) (22)

Application

2005125849/02, 2005-08-15

(24)

Start date

2005-08-15

(22)

Actual filing date

2005-08-15

(45)

Published

2007-06-20

(72)

Inventor

Guzeev Vitalij Vasil'EvichGuzeeva Tat'Jana IvanovnaMakarov Fedor ViktorovichMukhin Viktor Vasil'EvichShemjakina Irina VladimirovnaBujmov Sergej Anatol'EvichAbros'Kin Igor' Evgen'EvichChapaev Igor' Gennad'EvichVarygin Vitalij Nikolaevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Khimkontsentratov"

METHOD OF PROCESSING URANIUM-CONTAMINATED METALLIC MOLYBDENUM WASTE Russian patent published in 2007 - IPC C22B34/34 C22B9/04 C22B7/00

Abstract RU 2301275 C2

FIELD: precious elements-containing waste processing.

SUBSTANCE: invention relates to technology of processing wastes containing precious elements or presenting environmental danger and can be employed as indicated above. Method comprises oxidation of uranium-contaminated metallic molybdenum waste with either pure oxygen or air oxygen at 750-800°C and removal of uranium oxides by via sublimation at temperature 700-800°C, residual pressure 104-105 Pa and linear air or inert gas stream velocity over substance being sublimated 0.1-1 m/min. Resulting molybdenum trioxide is then reduced into metal.

EFFECT: reduced oxidation and sublimation time, reduced power consumption, and simplified sublimation operation.

2 tbl, 4 ex

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RU 2 301 275 C2

Authors

Guzeev Vitalij Vasil'Evich

Guzeeva Tat'Jana Ivanovna

Makarov Fedor Viktorovich

Mukhin Viktor Vasil'Evich

Shemjakina Irina Vladimirovna

Bujmov Sergej Anatol'Evich

Abros'Kin Igor' Evgen'Evich

Chapaev Igor' Gennad'Evich

Varygin Vitalij Nikolaevich

Dates

2007-06-20—Published

2005-08-15—Filed