Title:
ELECTROLYTIC REDUCTION OF METAL OXIDES SUCH AS TITANIUM DIOXIDE AND PROCESS APPLICATIONS
Document Type and Number:
WIPO Patent Application WO2001062996
Kind Code:
A9
Abstract:
A method of removing oxygen from a solid metal, metal compound or semi-metal M1O by electrolysis in a fused salt of M2Y or a mixture of salts, which comprises conducting electrolysis under conditions such that reaction of oxygen rather than M2 deposition occurs at an electrode surface and that oxygen dissolves in the electrolyte M2Y and wherein, M1O is in the form of (sintered) granules or is in the form of a powder which is continuously fed into the fused salt. Also disclosed is a method of producing a metal foam comprising the steps of fabricating a foam-like metal oxide preform, removing oxygen from said foam structured metal oxide preform by electrolysis in a fused salt of M2Y or a mixture of salts, which comprises conducting electrolysis under conditions such that reaction of oxygen rather than M2 deposition occurs at an electrode surface. The method is advantageously applied for the production of titanium from Ti-dioxide.
Inventors:
WARD-CLOSE CHARLES MALCOLM (GB)
GODFREY ALISTAIR BRYAN (GB)
GODFREY ALISTAIR BRYAN (GB)
Application Number:
PCT/GB2001/000683
Publication Date:
November 15, 2001
Filing Date:
February 20, 2001
Export Citation:
Assignee:
SECR DEFENCE (GB)
WARD CLOSE CHARLES MALCOLM (GB)
GODFREY ALISTAIR BRYAN (GB)
WARD CLOSE CHARLES MALCOLM (GB)
GODFREY ALISTAIR BRYAN (GB)
International Classes:
B22F3/10; B22F3/11; C22B5/00; C22B5/02; C22B34/12; C22C1/05; C22C14/00; C25C3/00; C25C3/28; C25C5/04; C25C7/02; C22B4/06; (IPC1-7): C22B34/12; C25F1/16; C25C3/28; C22B5/00
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