| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the productivity by improving the strength of a base material in a firing step of a waste gas cleaning filter base material and by reducing the time required for firing. <P>SOLUTION: In a process that a forming assistant containing an organic binder is added and kneaded into a ceramic raw material, the resultant forming body is formed into a honeycomb shape having many cells parallelly arranged in the axial direction and the ceramic honeycomb formed body 1 is placed in a firing furnace 3 to be heated, a gas stream passing through the cell 11 of the ceramic honeycomb formed body 1 is formed in the firing furnace 3 while the honeycomb formed body is held in a temperature zone of 200-450°C at which the organic binder is burnt. <P>COPYRIGHT: (C)2008,JPO&INPIT |
