过去,我国铝厂的电解槽,普遍采用窄铝母线(29×250或35×310毫米),因而其电流密度较高(0.5～0.7安培/毫米~2),电压降较大(250～350毫伏)。为了降低铝电解的电耗,我国一 In the past, the electrolytic cells in China’s aluminum smelters generally adopted narrow aluminum busbars (29 × 250 or 35 × 310 mm), so the current density was high (0.5-0.7 A / mm 2) and the voltage drop was large (250-350 millivolt). In order to reduce the electricity consumption of aluminum electrolysis, our country one