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在上世纪70年代中期第一次世界石油危机期间,日本通产省一声令下,全国几乎所有的铝电解企业按规定日期陆续先后关闭了,其中有些设备卖给中国,仅剩下富士山静冈(Shizuoka)市浦原铝厂(Kambara),因为它有自建的水电站,同时它将所产的原铝全部转化为高纯铝。2014年3月此厂的原铝电解槽系列已全部停产,从此以后日本1kg原铝也不产了,但浦原铝厂的高纯生产线仍保留,以进口的重熔用铝锭作原料。
During the first oil crisis in the world in the mid-1970s, Japan’s MITI promptly ordered that almost all the aluminum electrolytic enterprises in the country shut down one after another as scheduled and some of them were sold to China, leaving only the Mt. Fuji Shizuoka (Shibuoka) Kambara because it has its own hydropower station, and at the same time it converts all the primary aluminum produced into high purity aluminum. In March 2014, the series of primary aluminum electrolyzers in this factory have all been discontinued. Since then, 1kg of primary aluminum in Japan has not yet been produced, but the high-purity production line of the aluminum plant in Puyuan is still retained, with imported aluminum ingots for remelting as raw materials.