Electricity Solidified

about 1 year ago

Someone I know, who worked in the smelting and mineral refining industry, described aluminium as solidified electricity. Despite being the most abundant metal on Earth, aluminium is hard to extract from its ore (bauxite) and requires a hefty energy input to reduce it to metallic form. This is conventionally done using electrolysis of molten alumina at very high current densities. Consequently, the embodied energy in the resulting metallic aluminium ingots is huge and amounts to solid electricity.

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