Low Carbon Emission Technology Upgrading Industrial Pilot of 350kA Pots

After successful implementation of NCCT+ Cell Technology, SAMI and China SPIC Inner Mongolia Branch cooperated to select 5 pots in 350 kA potline of Huomeihongjun Aluminum smelter for low carbon emission experiment. Based on the evaluation of original performance, busbar configuration (Magnetic field upgrade & NSBT), Cathode block group & lining (NCCT+), superstructure and pot shell of the test pots are upgraded. After upgrade, the stability of MHD including magnetic field distribution and uniformity have been significantly improved by more than 50%, and ultimate ACD, metal horizontal current, CVD, and the busbar voltage drop are also reduced obviously. Accompanied by the application of 15cm low metal height management technology, the half year excellent performance at 366 up to 377 kA with 94.6% current efficiency and net specific energy consumption of <12 180 kWh/t–Al has confirmed that the technology upgrading has achieved prominent carbon reduction and economic benefits.