Patent ID: 6042763
Filing Date: 2000-03-28
Classification: B01D,C02F,C04B,Y10S

Abstract:
In a method for preparing porous ceramics by mixing a mixture of clay, a pore forming material and water, molding the mixture to form a molded article having an arbitrary shape, drying the molded article formed from the mixture, heating the molded article thus dried and calcinating the article at 1,200 to 1,500.degree. C., the improvement comprising the step of heating the molded article from room temperature to a temperature from 600 to 800.degree. C. over a time period of 5 to 15 hours by self burning of the pore forming material mixed in the molded article and the step of maintaining the molded article at a temperature of 600 to 800.degree. C. for 3 to 7 hours in a heat-up process to form a porous ceramic provided with amorphous pore surfaces.