It consists of the calcination preprocessing manner of the honeycomb compact and the calcination preprocessing system null ceramic

摘要

PROBLEM TO BE SOLVED: To provide a method of firing pre-treating a honeycomb formed body by which the honeycomb formed body is firing pre-treated for a short time while suppressing the occurrence of failure such as deformation or breaking.;SOLUTION: The method of firing pre-treating an un-fired honeycomb formed body 1 which comprise a raw material composition containing a ceramic raw material, water and a binder and has a plurality of cells divided by partitions to form a flow passage of a fluid has a first step for passing superheated steam of 100-150°C through the cells to raise the temperature of the honeycomb formed body and after that, keeping the honeycomb formed body at the temperature of the superheated steam ranging from equal to or above the temperature of the steam passed through the cells to ≤200°C and a second step for keeping the honeycomb formed body at the temperature of a superheated steam atmosphere ranging from equal to or above the temperature in the first step to ≤600°C after the first step.;COPYRIGHT: (C)2008,JPO&INPIT