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炼铝工业是属于耗电大工業部門之列,与电力工业关系非常密切,尤其是同廉价的水力發电更有相互依賴的关系。到目前为止,制取金属鋁唯一的方法是用电解,同时电解炼鋁的用电量很大,炼一吨金属鋁耗电量为18000度—20000度。电力費用佔电解鋁成本的15%—25%。一个年产五万吨的电解鋁工厂用电量
The aluminum smelting industry belongs to the large power industry sector and has a very close relationship with the power industry. In particular, it has a more interdependent relationship with cheap hydropower. So far, the only way to obtain aluminum metal is to use electrolysis. At the same time, the amount of electricity used for electrolytic aluminum smelting is very large. The amount of electricity consumed to smelt one ton of metal aluminum is 18,000 to 20,000 degrees. Electricity costs account for 15% to 25% of the cost of electrolytic aluminum. An annual output of 50,000 tons of electrolytic aluminum plant electricity