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AssigneeCommissariat a l'Energie Atomique
InventorsJean Batigne, Jean Charpin, Rodolphe Davydoff, Francois Erhart, Pierre Plurien
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The invention relates to a support for a ceramic porous barrier of the kind used for obtaining a concentration of uranium 235 in uranium hexafluoride by ultrafiltration. The support is formed by superposing a number of layers in the form of pastes, the particle size being homogeneous and constant in each layer and decreasing from the outer towards the inner layers. The pastes are prepared from powdered materials such as metals, oxides, silicates, borides, nitrides and halides to which mineral binders are added. The pastes are simultaneously extruded or co-extruded after which the resulting support is baked.
A method of preparing a support for porous barriers including the steps of preparing various pastes, each paste corresponding to a future layer and having a composition, a particle size and properties appropriate to the layer, then disposing the paste in the corresponding number of superposed layers then extruding simultaneously a support and then baking the support.
Dependencies are inferred from the claim text.