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 (UA)
TABAKAEV NIKOLAY MIKHAILOVICH (RU)
SIDLETSKI ALEKSEY YAKOVLEVICH (RU)
TABAKAEV BORIS NIKOLAEVICH (RU)
TABAKAEVA MARIYA NIKOLAEVNA (RU)
TABAKAEV NIKOLAY MIKHAILOVICH (RU)
SIDLETSKI ALEKSEY YAKOVLEVICH (RU)
TABAKAEV BORIS NIKOLAEVICH (RU)
TABAKAEVA MARIYA NIKOLAEVNA (RU)
Application Number:
PCT/RU2003/000280
Publication Date:
April 08, 2004
Filing Date:
June 23, 2003
Export Citation:
Assignee:
SIDLETSKIY IYAKOV VASILYEVICH (UA)
TABAKAEV NIKOLAY MIKHAILOVICH (RU)
SIDLETSKI ALEKSEY YAKOVLEVICH (RU)
TABAKAEV BORIS NIKOLAEVICH (RU)
TABAKAEVA MARIYA NIKOLAEVNA (RU)
TABAKAEV NIKOLAY MIKHAILOVICH (RU)
SIDLETSKI ALEKSEY YAKOVLEVICH (RU)
TABAKAEV BORIS NIKOLAEVICH (RU)
TABAKAEVA MARIYA NIKOLAEVNA (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 | 1998-06-10 | |||
US3413114A | 1968-11-26 | |||
GB449251A | 1936-06-17 |
Attorney, Agent or Firm:
Voropay, Sergey Aleksandrovich (St.Petersburg, 7, RU)
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