Method of manufacturing ceramic filter

B - Operations – Transporting – 01 – D

Patent

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B01D 71/02 (2006.01) C04B 41/87 (2006.01)

Patent

CA 2666282

There is disclosed a method of manufacturing a thin and uniform ceramic filter formed with less membrane formation times and having less defects. A ceramic sol whose average pore diameter after the sol itself has been formed into a membrane is larger than that of a ceramic separation membrane and is 10 nm or less is brought into contact with the surface of a ceramic separation membrane having an average pore diameter of 0.5 to 10 nm, and the ceramic separation membrane having the ceramic sol is dried and then fired to repair a defect portion of the ceramic separation membrane.

La présente invention concerne un procédé de fabrication d'un filtre céramique mince et uniforme réalisé avec moins d'étapes de formation de membranes et présentant moins de défauts. Un sol céramique dont le diamètre moyen des pores après la formation du sol lui-même en une membrane est supérieur à celui d'une membrane de séparation céramique et est égal ou inférieur à 10 nm est mis en contact avec la surface d'une membrane de séparation céramique ayant un diamètre de pores moyen compris entre 0,5 et 10 nm, et la membrane céramique de séparation comprenant le sol céramique est cuite et ensuite cuite pour réparer une partie défectueuse de la membrane de séparation céramique.

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