C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
182/120, 25/135
C04B 38/00 (2006.01) B01D 39/20 (2006.01) B01D 63/06 (2006.01) B01D 71/02 (2006.01) C04B 41/50 (2006.01) C04B 41/87 (2006.01)
Patent
CA 1196873
ABSTRACT OF THE DISCLOSURE A filtration structure, suitable particularly for ultrafiltration, is essentially constituted by a porous support of a relatively coarse grain sintered material bearing a thin- ner filtering layer of a relatively fine grain sintered material, formed on top of the support and not penetrating substantially between the grains of the latter. It can be produced by simu- ltaneous baking of the support and of the filtering layer, from, for example, a tube formed by extrusion of a first sin- terable composition to constitute the support, on which has been deposited, after drying, a second composition suspended in water, to form a thin coating constituting the filtering layer in the finished structure. The first composition contains an organic binder which decomposes on baking.
399483
Clement Rene
Gugliermotte Francis
Geceral Groupement D'etudes Pour Les Ceramiques Alumineuses
Goudreau Gage Dubuc
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