Burning furnace, burnt body producing method, and burnt body

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 33/32 (2006.01) C04B 35/64 (2006.01) F27B 5/14 (2006.01) F27B 9/06 (2006.01) F27B 9/16 (2006.01) F27B 9/24 (2006.01) F27B 9/36 (2006.01) F27D 11/12 (2006.01)

Patent

CA 2411114

A sintering furnace for sintering an object to be sintered formed of ceramics, fine ceramic materials, etc. to produce a sintered object and a method therefor. An insulating wall (28) and an inner shell (25) define a sintering chamber (16) for sintering an object to be sintered (10). Thermal equilibrium is maintained between the inner shell (25) and the object to be sintered (10), and the object to be sintered (10) is completely pseudo- adiabatically isolated to achieve more uniform and small energy consuming sintering. The thickness of the insulating wall (28) increases gradually from an inlet (20) toward an outlet (21). The object to be sintered (10) is fed by a carriage provided in a sintering furnace from the inlet (20) to the outlet (21) in the sintering chamber (16). Thereby, a temperature distribution corresponding to a plurality of processes can be easily formed in one furnace to sinter continuously the object to be sintered (10) in the furnace.

La présente invention concerne un fourneau de calcination et un procédé de production de corps calcinés, permettant de produire un corps calciné à partir d'un objet à calciner en matériau céramique, en matériau céramique fine ou en matériau analogue. Une chambre thermiquement isolée (28) et une enveloppe intérieure (25) définissent une chambre de calcination (16) où calciner l'objet à calciner (10). On entretient un équilibre thermique entre l'enveloppe intérieure (25) et l'objet à calciner (10), lequel est quasiment parfaitement isolé thermiquement, ce qui permet d'atteindre une calcination plus uniforme à basse énergie. En outre, l'épaisseur de la paroi thermiquement isolante (28) augmente progressivement de l'entrée (20) vers la sortie (21). Un chariot équipant le fourneau de calcination permet un transfert de l'objet à calciner (10) à l'intérieur de la chambre de calcination (16) de l'entrée à la sortie (21). Cela permet d'obtenir une distribution des températures pour différentes phases de traitement dans un unique fourneau, ce qui permet de calciner l'objet à calciner (10) en continu dans le même fourneau.

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