Patent ID: 11969721
Assignee: NGK INSULATORS, LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A method for producing a honeycomb structure, the method comprising:
a forming step of extruding a forming raw material containing a ceramic raw material mainly based on silicon carbide and metal silicon to obtain a honeycomb formed body, the honeycomb formed body comprising: an outer peripheral wall; and a partition wall disposed on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells, each cell of the plurality of cells extending from one end face to other end face to form a flow path;
a drying step of drying the honeycomb formed body to obtain a honeycomb dried body; and
a firing step of firing the honeycomb dried body to obtain a honeycomb fired body,
wherein the drying step comprises:
a first drying step of subjecting the honeycomb formed body to dielectric drying at a frequency of from 10 to 150 MHz so that a moisture scattering rate of a honeycomb formed body after dielectric drying is from 30 to 85%; and
after the first drying step, a second drying step of subjecting a honeycomb formed body having the moisture scattering rate of from 30 to 85% to hot air drying.