Patent ID: 9393752
Filing Date: 2016-07-19
CPC Classification: B29D,C04B,F27B,F27D

Claim Text:
1. A method for producing a honeycomb-shaped fired body, the method comprising the steps of: preparing a starting material that is a mixture containing an inorganic compound, an organic binder and a solvent; molding the mixture to obtain a honeycomb-shaped green molded body; a first heating step to make the molded body contain residual carbon-containing substances in a furnace by increasing the temperature of the furnace while introducing a gas with an oxygen concentration of 1 to 5 vol %; and a second heating step following the first heating step to obtain the fired body by further increasing the temperature of the furnace without introducing a gas with an oxygen concentration of 1 to 5 vol %; wherein conditions for the first heating step are set so that when the molded body is allowed to stand after the first heating step in an oxygen-containing atmosphere at 900° C., the temperature at a center section of the molded body is at least 20° C. higher than the temperature of the atmosphere in the furnace, and in the first heating step, the temperature-elevating rate is 10-30° C./hr, and in the second heating step, the temperature-elevating rate is 50-100° C./hr.