Energy-saving composite cathode steel bar for aluminum electrolysis cell

Abstract

The invention relates to a cathode steel bar, in particular to an energy-saving composite cathode steel bar for an aluminum electrolysis cell. A copper plate is arranged between the two cathode steelbars, and steel plates are arranged on the exposed surfaces of the copper plate. The invention has the advantages that: the technical transformation can be conveniently carried out without changing the specification of carbon blocks and cell shells; the technical transformation cost investment is low and the income is high; compared with the current design form, the comprehensive investment cost is obviously reduced by adopting the form. The horizontal current in molten aluminum is reduced, and the cathode voltage drop of an electrolytic cell is reduced, thereby achieving the purpose of reducing the direct-current power consumption of electrolytic aluminum.

Description

technical field [0001] The invention relates to a cathode steel rod, in particular to an energy-saving composite cathode steel rod for an aluminum electrolytic cell. Background technique [0002] The situation of national environmental protection is becoming more and more serious, and energy conservation and environmental protection have become common problems faced by the industry. At present, the energy utilization rate of the advanced aluminum electrolysis process is only about 50%, and about half of the electric energy is converted into heat and lost. It is necessary to improve and optimize the structure of the electrolytic cell to reduce energy loss. It is an important solution to reduce the voltage of the electrolytic cell, improve or maintain the current efficiency, and then reduce the DC power consumption of the aluminum electrolysis process. [0003] There are many ways to reduce the DC power consumption of the aluminum electrolysis process, and the main method at ...

AI Technical Summary

Problems solved by technology

However, the current optimized forms of cathode steel rods have changed the specifications of cathode steel rods or the form of cathode carbon block groups, and the corresponding cathode carbon blocks and electrolytic cell shells have to be modified accordingly to adapt to the current technology; or the modification is small but the application effect Poor, not conducive to low-cost, high-yield and large-scale promotion

Therefore, there is a need for a technology that can achieve good results and high returns without changing the specifications of the current carbon blocks, steel rods and tank shells.

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