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日本铝的生产能力达164万吨,1977年铝的实际产量为119万吨,仅次于苏美。但每年仍需进口铝锭几十万吨方能满足国内的需要。在日本,铝的生产成本中电费占40%。自1973年以来,由于石油危机导致电价上涨,使日本炼铝工业遭到沉重打击。为了节约能耗,消除公害,迫切要求寻求新的炼铝工艺,改革现有流程。
Japan’s aluminum production capacity reached 1.64 million tons in 1977, the actual production of aluminum was 1.19 million tons, second only to the Soviet Union and the United States. However, hundreds of thousands of tons of aluminum ingot still need to be imported every year to meet domestic needs. In Japan, electricity costs account for 40% of aluminum’s production costs. Japan’s aluminum smelting industry has suffered a severe blow since 1973 as electricity prices rose as a result of the oil crisis. In order to save energy consumption and eliminate pollution, it is urgent to seek new aluminum smelting process and reform existing process.