PRODUCTION OF MICROPOROUS CERAMIC POROUS BODY

PURPOSE:To produce a ceramic porous body having high porosity and fine pore size and being homogeneous and free from deformation and crack in good productivity, by pressurizing, molding and burning an ultrafine ceramic powder using a specific lubricating organic liquid substance as a molding medium. CONSTITUTION:A lubricating organic liquid substance such as aliphatic, alicyclic or aromatic hydrocarbon, alcohols, esters or silicone having 2-100 centistokes poise at 37 deg.C and 70-700 average mol.wt. is added to 0.005-2.5mum ultrafine power of ceramics consisting of Al2O3, SiO2, ZrO2, TiO2, SiC, Si3N4, BN and the others as a molding medium at a ratio of 65-330wt.% and the blend is kneaded and molded under pressure and burned at 500-1,400 deg.C. The molding medium is gasified and loosen at high temperature and ultrafine ceramic porous body having 60-90% average porosity can be simply produced in good productivity.