Heat preservation and sealing structure of anode baking furnace

Abstract

The invention discloses a sealing structure for an anode roasting furnace to solve the problems of uneven distribution of local temperature in an edge flame path, deformation quickening of a flame path wall, shortening of the service life of the furnace, increment of the control difficulty of pressure and temperature in the furnace, increment of the fuel consumption and reduction of the pass percent of roasted carbon blocks in the traditional production of the anode roasting furnace. The structure comprises a furnace shell, a furnace surface casting block and an insulation brick, wherein the insulation brick is arranged between the furnace shell and the furnace surface casting block; and the horizontal height of the upper end surface of the insulation brick is lower than the horizontal heights of the upper end of the furnace shell and the upper end of the furnace surface casting block. The structure further comprises a refractory fiber blanket and a refractory casting material; the refractor fiber blanket adopts a U-shaped groove structure, and is laid among the furnace shell, the furnace surface casting block and the insulation brick; the bottom of the U-shaped groove structure is arranged on the upper end surface of the insulation brick; the refractory casting material is filled in the inner side of the U-shaped groove structure; and the two outer side surfaces of the refractory fiber blanket are respectively and tightly pressed on the side walls of the furnace shell and the furnace surface casting block. The structure is used for roasting carbon blocks.

Description

technical field [0001] The invention relates to a heat preservation and sealing structure of a roasting furnace, in particular to a heat preservation and sealing structure of a carbon anode roasting furnace for aluminum. Background technique [0002] When the existing anode roasting furnace is in production, the fire path in the furnace is in a negative pressure state, and the cold air in the surrounding environment will penetrate into the side fire path through the gap between the furnace shell and the cast block on the furnace surface, causing the side fire path to The temperature of the flue is generally lower than that of the middle flue, and the local temperature distribution in the side flue is uneven, which accelerates the deformation of the flue wall and reduces the service life of the furnace. At the same time, it increases the difficulty of controlling the pressure and temperature in the furnace, which not only increases the fuel consumption, but also reduce the qu...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a thermal insulation and sealing structure of an anode roaster to solve the problem that during the production of the existing anode roaster, cold air infiltrates into the side fire channel through the gap between the furnace shell and the cast block on the furnace surface, causing side fire The local temperature distribution in the flue is uneven, which accelerates the deformation of the flue wall and reduces the service life of the furnace. At the same time, it increases the difficulty of controlling the pressure and temperature in the furnace. pass rate problem

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