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by Im Alec has abandoned this account on June 13th, 2007
A lot - making aluminium out of bauxite is extremely energy intensive, hence is usually done in places with local energy supplies such as private hydro-electric dams. Converting scrap aluminium back to raw aluminium ingots probably only takes 5-10% of the energy of smelting bauxite. The catch is that 5-10% of a large number is still a largish number. Recycling is good - not using it in the first place is better.
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Comments
Nice answer :)
by xprofessor on May 24th, 2009