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Title:
METHOD FOR OSMIUM DISTILLATION INTO GAS PHASE FROM SULPHUR-ACID SLUDGE OF COPPER PRODUCTION
Document Type and Number:
WIPO Patent Application WO/2004/029308
Kind Code:
A1
Abstract:
The invention relates to rear-metal metallurgy and can be used for efficient osmium extraction from copper production waste material. The inventive method consists in pre-distilling organic components in a reducing medium from initial raw material in the form of an acid sludge of copper production. Afterwards, the distillation of metals, including osmium, is carried out by means of a hydrometallurgical method in reactors adding a diluted sulphuric acid and an oxidiser. Said metals, including osmium, pass into a gaseous phase and are retained by alkali absorbers. A remaining cake is granulated, dried at a temperature of 40-50 °C and heated at a temperature of 450-500 °C in a shaft furnace, i.e. at relatively low temperatures in order to prevent a cake sintering. Said invention makes it possible to carry out the selective and highly efficient osmium extraction (to 98%) into the gaseous phase from the copper production waste material which is barren of that component.

Inventors:
Sidletskiy, Iyakov Vasilyevich (Kharkovskaya nab, 9-45 Kharkov, 02304, UA)
Tabakaev, Nikolay Mikhailovich (V.O. 6 liniya, 1/25-14 St.Petersburg, 4, 19903, RU)
Sidletski, Aleksey Yakovlevich (ul. Vorovskogo, 2-87 Belgorod, 30800, RU)
Tabakaev, Boris Nikolaevich (Svetlanovsky pr, 101-11 St.Petersburg, 7, 19542, RU)
Tabakaeva, Mariya Nikolaevna (V.O. 6 liniya, 1/25-14 St.Petersburg, 4, 19903, RU)
Application Number:
PCT/RU2003/000280
Publication Date:
April 08, 2004
Filing Date:
June 23, 2003
Export Citation:
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Assignee:
Sidletskiy, Iyakov Vasilyevich (Kharkovskaya nab, 9-45 Kharkov, 02304, UA)
Tabakaev, Nikolay Mikhailovich (V.O. 6 liniya, 1/25-14 St.Petersburg, 4, 19903, RU)
Sidletski, Aleksey Yakovlevich (ul. Vorovskogo, 2-87 Belgorod, 30800, RU)
Tabakaev, Boris Nikolaevich (Svetlanovsky pr, 101-11 St.Petersburg, 7, 19542, RU)
Tabakaeva, Mariya Nikolaevna (V.O. 6 liniya, 1/25-14 St.Petersburg, 4, 19903, RU)
International Classes:
C22B1/02; C22B3/08; C22B7/00; C22B9/14; C22B11/00; C22B61/00; (IPC1-7): C22B11/00; C22B1/02; C22B3/08
Foreign References:
RU2112588C1
US3413114A
GB449251A
Attorney, Agent or Firm:
Voropay, Sergey Aleksandrovich (a/ya 405, St.Petersburg, 7, 19722, RU)
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