Power-on and power-off method of steel claw aluminum guide rod for prebaked anode aluminum electrolysis

Abstract

The invention discloses a power-on and power-off method of a steel claw aluminum guide rod for prebaked anode aluminum electrolysis. The method is characterized in that an insulating layer is arranged between a large busbar and the steel claw aluminum guide rod on the upper portion of an electrolysis bath so as to control the steel claw aluminum guide rod to be powered on or off. The method can achieve safe switching of the power-on state and the power-off state of the steel claw aluminum guide rod, and lays a foundation for an aluminum electrolysis continuous production method.

Description

technical field [0001] The invention relates to a method for producing electrolytic aluminum, in particular to a method for conducting and disconnecting electricity with a prebaked anode aluminum electrolytic steel claw aluminum guide rod. Background technique [0002] In the modern electrolytic aluminum industry, prebaked anodes are generally used to produce electrolytic aluminum. There are 2 to 4 circular grooves with a diameter of 160 to 180 mm and a depth of 80 to 110 mm on the upper surface of the anode carbon block, commonly known as carbon bowls. The anode claw head is cast in the carbon bowl, and the anode claw head and the aluminum conductive rod are connected by aluminum-steel explosion welding, and then the aluminum conductive rod is closely connected with the anode carbon block to form the anode carbon block group. In the production process of electrolytic aluminum, the anode carbon block will be continuously consumed due to its continuous reaction with the oxyg...

AI Technical Summary

Problems solved by technology

However, for the steel claws that continuously use the anode carbon block, it is not necessary to replace it every time the anode carbon block is replaced. It is only necessary to connect the steel claw and the anode carbon block. The problem is that in the existing electrolytic cell process, steel The claws are always in contact with the busbar, and the current of the busbar of a large electrolyzer is usually hundreds of kiloamperes. If the anode carbon block is superimposed on the line, the always charged steel claw will generate great heat when it is about to contact the anode carbon block. It may burn out the large busbar of the electrolytic cell, the steel claw aluminum guide rod and other components, and even affect the current stability of the entire electrolytic cell

a great security risk