Patent ID: 6783724
Filing Date: 2004-08-31
Classification: B01D,C04B

Abstract:
A method of producing a cordierite ceramic honeycomb comprising the steps of:preparing raw materials becoming cordierite and forming agents; adding the forming agents into the raw materials becoming cordierite; 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 a main ingredient, wherein, at the sintering step, a temperature descending rate at least from a maximum temperature greater than 1300Â° C. to 1300Â° C. is not larger than 100Â° C./hour, and wherein quartz is used in the raw material batch becoming cordierite and alumina having an average particle size larger than 2 &mgr;m is used.