Apparatus and method for reduction of a solid feedstock

Details Apparatus and method for reduction of a solid feedstock Apparatus and method for reduction of a solid feedstock

C - Chemistry, Metallurgy

25

C

C25C 7/00 (2006.01)

Patent

CA 2761594

In a method for reducing a solid feedstock (110), such as a solid metal compound, feedstock is arranged on upper surfaces of elements (60, 80, 81 ) in a bipolar cell stack contained within a housing (25). A molten salt electrolyte is circulated through the housing so that it contacts the elements of the bipolar stack and the feedstock. A potential is applied to terminal electrodes (50, 60) of the bipolar stack such that the upper surfaces of the elements become cathodic and the lower surfaces of the elements become anodic. The applied potential is sufficient to cause reduction of the feedstock. The invention also provides an apparatus for implementing the method.

La présente invention se rapporte à un procédé permettant de diminuer une charge d'alimentation solide (110), telle qu'un composé métallique solide. La charge d'alimentation est disposée sur des surfaces supérieures des éléments (60, 80, 81) d'un empilement de cellules bipolaires dans un boîtier (25). On fait circuler un électrolyte de sel fondu à travers le boîtier de telle sorte qu'il vienne en contact avec les éléments de l'empilement bipolaire et la charge d'alimentation. Un potentiel est appliqué aux électrodes terminales (50, 60) de l'empilement bipolaire de telle sorte que les surfaces supérieures des éléments deviennent cathodiques et que les surfaces inférieures des éléments deviennent anodiques. Le potentiel appliqué est suffisant pour provoquer une diminution de la charge d'alimentation. L'invention porte également sur un appareil permettant de mettre en uvre le procédé.

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