Patent ID: 6644963
Filing Date: 2003-11-11
Classification: F27B,F27D

Abstract:
A batch-type kiln for performing firing treatments involving a de-waxing step and a firing step, comprising:(a) a kiln body; (b) a heating chamber disposed within the kiln body, the heating chamber having a heater disposed therein; (c) a table disposed at the bottom of the heating chamber, the table having a peripheral portion and an upper surface for supporting an object to be treated, the peripheral portion of the table and a portion of the kiln body defining a gap there between, the gap forming a gas-introducing path for introducing a first gas into the heating chamber, wherein the gap comprises a horizontal component and a vertical component continuous with each other; and (d) a plurality of gas supply tubes arranged concentrically with respect to the heating chamber for introducing a second gas into the heating chamber, each gas supply tube having a plurality of blow openings, wherein the first gas and the second gas are the same gas.