Anode Carbon Block

Anode CarbonBlock Overview

It participates in electrochemical reactions and directs current into the electrolytic cell. Each prebaked carbon anodeblock is preassembled by 1 ~ 3 anode carbon blocks, anode guide rod and steel claw (see anode carbon block assembly). The single anode group is the most common one. The number and size of the carbon block group depends on the capacity and current density of the electrolytic cell (generally 10 ~ 40 groups).

The carbon blocksare arranged symmetrically on the left and right sides of the anode horizontal bus in the slot, and the aluminum guide rod of the carbon blocks is fixed on the horizontal bus by a rotatable clamp. The aluminum guide rod plays the dual role of conveying current and hanging the carbon graphite block for cathode.

Anode Carbon Block Uses

Anodes are large carbon blocks which are used to conduct electricity during the aluminum reduction process. Anode material for pre-baked aluminum electrolytic cell. It is composed of several anode carbon blocks and an anode lifting mechanism. Prebaked anode is an important part of prebaked anodic aluminum electrolytic cell. Anodes are positive electrodes, typically made from crushed calcined petroleum coke and liquid pitch formed into rectangular blocks and baked. These anode blocks are attached to rods and suspended in an electrolytic cell, where they are slowly consumed in the aluminum smelting process.

Cathode carbon vs. Anode carbon

1. cathode carbon blockis between 8% and 15%, and the ash content of cathode carbon block is higher, some even as high as 30%. Therefore, it can be identified by ash in carbon anode buttsand the cathode carbon block are broken into a size of 100mm.

Block carbon manufacturing process

Carbon anode aluminium production

During the aluminium reduction process, anodes, as large carbon blocks, are used to conduct electricity. The manufacturing processes of carbon anodes and graphite electrodes are very similar and overlap in some cases. Anode effect in aluminum production is a phenomenon which the low concentration of alumina in the electrolyte leads to the increase of the resistance of the electrolytic cell, the instability of the electrolytic cell and the decrease of aluminum output.

Technical specification:

No	Item	Unit	Guarantee Value
1	Apparent Density	g/cm3 (min)
2	Electrical Resistivity	μΩ.m (max)	63
3	Compress strength	Mpa (min)	30
4	Thermal Conductivity	W/mk(max)
5	Flexural Strength	Mpa(Min)	38
6	Permeability	NPm(Max)
7	Thermal Exposure	10-6/k
8	Ash	%(Max)
9	Fe	ppm(Max)	500
10	Si	ppm(Max)	350
11	V	ppm(Max)	350
12	Na	ppm(Max)	500

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