Industrial Test of Low-voltage Energy-saving Aluminum Reduction Technology

摘要

In order to seek an energy-saving way suitable for Chinesernlarge-scale prebaked cells, Central South University,rncollaborated with Yunnan Aluminum Co. Ltd and Sichuan QiyarnAluminum Group and has put forward a “low-voltagernenergy-saving aluminum reduction technology”. It includes arnset of technical measures related to the adjustment ofrntechnological parameters and the innovation of cathodernstructure (e.g. “curved cathode”, invented by the collaboration).rnWith the combined use of the measures in test cells, the cellrnvoltage has been reduced to 3.90~3.96 V while the currentrnefficiency could be raised to or maintained at 93.0~95.5 % andrnDC consumption reduced to 12189~12501 kWh/t-Al. Thernextending application of the technology to whole potlines isrnnow in process, the preliminary results of which have given usrnthe hope that with more improvement and combined withrnChina’s well-designed potlines, this technology can realize therntarget of reducing DC consumption to below 12000kWh/t-Alrnand it can also be used for the upgrading of old-type cells tornachieve marked energy-saving effects (e.g. reducing to belowrn12500kWh/t-Al).