Method for drying honeycomb formed article
AssigneeNGK Insulators, Ltd.
InventorsShuichi Takagi, Yasuhiro Horiba
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Abstract
There is provided a method for drying a honeycomb formed article 1. The method has the first step, where an unfired honeycomb formed article 1 having a plurality of cells separated by partition walls made from raw material composition containing a ceramic raw material, water, and a binder is heated and dried by microwave drying or dielectric drying, and a second step, where the honeycomb formed article 1 is dried by hot air drying, where hot air whose humidity was adjusted to have a wet-bulb temperature of 50 to 100° C. using a hot air drying apparatus 11 after the first step is passed through the cells. The method can dry a honeycomb formed article in a shorter period of time with inhibiting generation of a defect such as a deformation or breakage.
Claims16
A method for drying an unfired honeycomb formed article having a plurality of cells separated by partition walls made from raw material composition containing a ceramic raw material, water, and a binder;
- the method comprising:
- a first step in which the honeycomb formed article is heated and dried by microwave drying or dielectric drying, and
- a second step in which the honeycomb formed article is dried by hot air drying comprising passing hot air having a dry-bulb temperature of 100 to 200° C. through the honeycomb formed article, the second step further comprising adjusting the humidity of the hot air to have a wet-bulb temperature of 50 to 100° C.
Dependencies are inferred from the claim text.