Vertical-type continuous graphitization furnace

Abstract

The invention discloses a vertical-type continuous graphitization furnace. A feeding tunnel (3) is arranged at the top of the furnace, and a storage bin (2) is arranged on the feeding tunnel (3); the storage bin (2) has a three-segment structure and specifically comprises a middle bin (11) and two side bins (10); the feeding tunnel (3) has a double-layer round structure and specifically has a combination structure of a tunnel inner cylinder and a tunnel outer cylinder; an annular gas exhaust channel (13) is formed at the bottom between the tunnel inner cylinder and the tunnel outer cylinder, and is connected with a gas exhaust pipe (1); an upper electrode (4) is arranged at the furnace top and at the center position of the feeding tunnel (3); a lower electrode (7) is arranged at the middle position at the lower segment of the furnace body; a coarse-particle material (5) is placed at the middle position of the furnace body, and a fine-particle material (6) is placed between a refractory-material inner liner (8) of the furnace and the coarse-particle material (5); a material discharging mechanism (9) is arranged at the bottom of the furnace body; and the annular gas exhaust channel is a triangular cavity, and the bottom employs a refractory castable (12).

Description

technical field [0001] The invention relates to a vertical continuous graphitization furnace. Background technique [0002] At present, there are mainly two types of vertical furnaces that can continuously discharge carbon raw materials for high-temperature heat treatment in China. One is a general-temperature electric calciner that uses high-alumina bricks as a thermal insulation lining, and the heat treatment temperature is 1500-2000 ° C; The first is a high-temperature electric calciner that uses carbon lining as heat preservation, and the heat treatment temperature is 2000~2500°C. Neither of these two furnace types can meet the requirements of high-temperature heat treatment above 2800°C required for complete graphitization of carbon raw materials. Since the carbon lining is a conductive material, the use of the latter furnace type will not only reduce the current efficiency, but also shorten the service life. The horizontal graphitization furnace belongs to discontinuo...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a vertical continuous graphitization furnace to overcome the shortcomings of the existing technology that cannot meet the requirements of high temperature heat treatment above 2800 °C required for complete graphitization of carbon raw materials.

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