Method for manufacturing cordierite ceramic honeycomb

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 35/195 (2006.01) C04B 35/622 (2006.01) C04B 35/64 (2006.01) C04B 38/00 (2006.01)

Patent

CA 2372368

A method of producing a cordierite ceramic honeycomb including the steps of: preparing raw materials becoming cordierite and forming agents; adding the forming agents into the raw materials for cordierite generation; mixing the forming agents and the raw materials to obtain a raw material batch; extruding the raw material batch to obtain a formed body; drying the formed body; and sintering the formed body after drying; so as to obtain a honeycomb structural body having a cordierite crystal phase as main ingredient. In this method, at the sintering step, a temperature descending rate at least from maximum temperature to 1300°C is not larger than 100°C/hour.

L'invention concerne un procédé de fabrication d'une structure en nid d'abeilles comprenant une phase de cordiérite comme phase cristalline principale, une charge de matière brute étant obtenue par mélange d'une matière brute avec un auxiliaire de formage, cette charge étant formée par extrusion, séchée, puis soumise à une cuisson. Pendant l'étape de cuisson de ce procédé, la vitesse de réduction de la température depuis le maximum jusqu'à 1300 DEG C est inférieure ou égale à 100 DEG C/heure.

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