绿色矿冶

The aluminum electrolytic cell used in a company had the problems of large angle extension legs, low electrolyte level and excessive voltage swing after pole change under low voltage production process. The cathode lining structure of aluminum reduction cells was optimized and improved by selecting special-shaped cathode steel bars and high graphite content cold ramming paste, improving artificial extension legs, and using phosphorus pig iron casting cathode steel bar carbon block assembly technology and new internal insulation materials. After improvement, the bottom pressure drop of the new energy-saving cathode lining structure aluminum reduction cell was reduced by 39mV, and the direct current consumption of aluminum liquid electrolysis was reduced by 249kWh/t-Al, and the insulation effect and energy saving effect were significantly improved, which ensured the energy balance and long-term stable operation of aluminum reduction cell under low voltage production process.