How much energy does melting scrap save compared with making new metal?
Short answer: Commonly cited figures suggest recycling aluminium uses a small fraction of the energy needed to make it from ore, and recycling steel and copper also saves a large share, though the exact savings depend on the process and the source, so while the numbers vary, the principle is consistent that melting scrap uses much less energy than mining and refining new metal.
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List Free →Aluminium
Making aluminium from ore is very energy-intensive, so remelting scrap saves the great majority of that energy.
Steel and copper
Recycling these metals also saves a substantial share of the energy needed for primary production.
Quality matters
Clean scrap melts efficiently, whereas dirty scrap wastes some of the saving.
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