Prebaked anode aluminum electrolytic cell anode configuration method

Abstract

The invention relates to an anode configuration method, and in particular, relates to an intermediate point type unloading pre-baked anode aluminum electrolytic cell anode configuration method. The pre-baked anode aluminum electrolytic cell anode configuration method includes an electrolytic cell, anode carbon blocks, feeding points, center joints and break joints and is characterized in that the center joints along the direction of the long axis of the electrolytic cell comprise narrow center joints and rhombic center joints arranged alternately successively; the rhombic center joints are formed below the feeding points and in the front and at the rear of the feeding points, the length of the rhombic center joints is equal to the total width of two anode carbon blocks plus two break joints, and the rhombic center joints are enclosed by four anode carbon blocks and adjacent break joints. The method has the advantages and effects that compared with the prior art, the method gives full consideration to needs of alumina unloading, dissolution and diffusion processes on the unloading port space and the electrolyte total amount, focuses on expanding the anode area participating in electrochemical reactions, reduces unnecessary center joint area, achieves the purposes of improving the current efficiency and increasing the productivity, and brings various benefits for technology upgrading and new design of the electrolytic cell.

Description

technical field [0001] The invention relates to an anode configuration method, in particular to an intermediate point type blanking prebaked anode anode configuration method for an aluminum electrolytic cell. Background technique [0002] The adoption of intermediate point feeding technology eliminates the adverse effects of alumina side feeding operation, reduces cathode precipitation in the tank chamber, increases the anode reaction area, and improves the current efficiency. As modern aluminum electrolytic cells continue to move towards large-scale and energy-saving directions, it is necessary to effectively use the furnace area and increase the anode reaction area as much as possible. [0003] At present, the anodes of the aluminum electrolytic cell are suspended and fixed on the anode busbars on the left and right sides of the upper structure, and are arranged in two symmetrical rows along the long axis of the electrolytic cell. A 150-200mm wide middle gap is usually set...

AI Technical Summary

Problems solved by technology

On the one hand, this anode configuration ignores the fact that alumina melts and absorbs heat after it is added to the electrolytic cell, and the space at the discharge port is cramped. After the electrolyte melt releases heat, the temperature drops rapidly and will become suspended, which is not conducive to the subsequent alumina melting. On the other hand, the 30~50mm narrow middle gap hinders the electrolyte flow, and the incompletely melted alumina will only float on the electrolyte, and cannot diffuse to the area far from the cutting point, which will easily lead to the occurrence of anode effect

Images