Question:: on Metals?

Question

Why do environmentalists sometimes refer to aluminium as "solidified electricity"?

Answer 1

It is one of the few metals that is recovered by the process of electrolysis.  Huge amounts of electricity are used to produce aluminum.

Answer 2

the only way to produce Aluminium is electrolysis process which consumes a lot of energy, but alternative processes were always found to be less viable economically and/or ecologically. The worldwide average specific energy consumption is approximately 15±0.5 kilowatt-hours per kilogram of aluminium produced  The most modern smelters achieve approximately 12.8 kW·h/kg . Reduction line currents for older technologies are typically 100 to 200 kA. That's why they always build aluminium factories near river banks with hydro-electric plants.

Recovery of the metal via recycling has become an important facet of the aluminium industry. Recycling involves melting the scrap, a process that requires only ((((five percent of the energy used to produce aluminium from ore.)))) This is why I never throw my coke cans in trash bin.

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