Pre-baking anode carbon block

Abstract

The present invention discloses a pre-baking anode carbon block, which comprises carbon bowls (2) on the upper end surface of a carbon block (1), wherein two communication grooves parallel to the length direction of the carbon block (1) are arranged between the adjacent carbon bowls (2) and are simultaneously tangent to one ends of the two adjacent carbon bowls (2), and the depth of the communication groove (3) and the depth of the carbon bowl (2) are equal. According to the present invention, the iron-carbon pressure reducing of the pre-baking anode carbon block is less than the iron-carbon pressure reducing of the existing structure and the casting process of the high phosphorus pig iron is easy and has the good effect, such that the pre-baking anode carbon block is suitable for the electrolytic aluminum plant having the supported carbon pre-baking anode production, especially the current carbon pre-baking anodes with all specifications can be pre-heated, and the industrial application prospects are broad.

Description

technical field [0001] The invention belongs to the field of aluminum electrolysis production, in particular to a carbon bowl structure on the surface of a prebaked anode carbon block. Background technique [0002] In the aluminum electrolysis production process, the anode voltage drop is an important part of the electrolysis voltage, and it is also an ineffective power consumption that does not produce benefits. The lower the value, the lower the energy consumption. The pressure drop components of the anode carbon block are: (1) the pressure drop of the anode itself; (2) the iron-carbon pressure drop; (3) the steel claw pressure drop; (4) the explosion welding block pressure drop; (5) the aluminum guide rod pressure drop. The following discussion mainly focuses on the iron-carbon pressure drop. [0003] According to the formula U = I × R, when the current is constant, the voltage drop value can be obtained by determining the resistance. It is known from physics that the ...

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Problems solved by technology

[0006] After practical application, it is found that the above technical solutions still have a lot of room for improvement, such as the fluidity when pouring phosphorus pig iron. Although the current slotting method makes the carbon bowls communicate with each other, the flow effect during actual pouring is still not good. ; Another example is that the cross-sectional area of ​​the conductor increased by a single slot may continue to increase, etc.

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