Patent ID: 9085091
Filing Date: 2015-07-21
Classification: B01D,B28B,C04B,F01N

Abstract:
1. A method for producing a ceramic honeycomb structure having a large number of paths partitioned by porous cell walls, said cell walls having a thickness of 0.17-0.45 mm and porosity of 40% or more, comprising the steps of preparing a moldable material comprising a ceramic material powder, a binder, a pore-forming material and water; extruding said moldable material to form a honeycomb-shaped green body; and drying and sintering said green body, said pore-forming material having a melting point of 40-110° C., being solid in said moldable material, and being melted in said drying step, so that 25-65% of said pore-forming material added is removed from said green body in said drying step, and said ceramic honeycomb structure having an outer diameter of 150 mm or more and a length of 150 mm or more.