| 摘要 |
PURPOSE:To provide a cordierite ceramic filter with excellent regeneratability on regeneration by back washing, a high mechanical strength and lightweight and compact and a method for preparing it. CONSTITUTION:A cordierite powder with a porosity of at least 30% is used as an aggregate and a raw material for making cordierite, a pore making agent, a molding auxiliary and a solvent are incorporated therein and mixing and kneading are performed and the mixture is extruded into a honeycomb shape to perform calcination after molding. The mean fine pore diameter of a filter is made within (a mean diameter of the aggregate)X0.15+ or -5mum and the porosity of the whole filter is made at least 30% and the compression strength in the flow path direction is made at least 100kgf/cm<2>. In addition, the thickness of a partitioning for the flow path is made 300-2,000mum and the porosity of the cross section of the filter part is made 63-71%. |
