Fast firing for ceramic tiles

Abstract From the Canadian patent

A process for the production of tiles made of ceramic material, comprising the steps of advancing in a heat treatment chamber a raw tile based on a clay material dried and covered, on one face with a glaze also dried, the both faces of said, raw tile being at least substantially exposed to direct transmission of heat by convection, treating the tile in the heat treatment chamber, said tile going through a first fast heating phase until it reaches a temperature slightly lower than maximum firing temperature, and through a successive firing phase during which it is kept at a range of temperatures comprised between the final heating temperature and the maximum firing temperature and finally …