Carbon blocks made from high-quality anthracite, coke, graphite, etc. Used as a cathode for aluminum electrolysis cells. It is built at the bottom of the electrolytic cell, also known as the bottom carbon block. The characteristic cathode carbon block plays a dual role in conducting electricity and forming the inner lining of the electrolytic cell. Aluminum electrolysis production requires cathode carbon blocks to have high temperature resistance. The characteristics of resistance to molten salt erosion and conductivity, good thermal conductivity, high mechanical strength, good thermal shock resistance, and strong sodium corrosion resistance are conducive to energy conservation and improved cell life in aluminum electrolysis production.

Graphite cathode is a conductive material used for the cathode of aluminum electrolysis cells, representing the development direction of the electrolytic aluminum industry. With the technological progress and development of the electrolytic aluminum industry, the electrolytic cell is developing towards a large capacity of over 300KVA, with higher requirements for cathode materials. The main advantage of graphitized cathode is to strengthen current, improve current efficiency, achieve the purpose of increasing production and energy conservation, and ensure stable operation of the electrolytic cell. The larger the cell type, the more obvious the effect of stable operation, and the more obvious the improvement of current efficiency. The unit production capacity of aluminum electrolytic cells using graphitized cathode is increased by 10-15%, and the power saving per ton of aluminum is more than 600KWh. The graphitized cathode aluminum electrolysis cell is one of the materials that the country prioritizes for promotion and development in the electrolytic aluminum industry due to its significant energy-saving, consumption reduction, and emission reduction effects.