According to Bureau of International Recycling (BIR), currently about 45% of the world’s steel production is made from recycled steel, followed by about 35% world’s aluminium and over 40% of the world’s copper. The major benefits include energy conservation, conservation of natural resources, greenhouse gas emission reduction.
Recycling scrap metal requires drastically less energy than manufacturing new metals from virgin material. The estimated yield in energy saving by using recycled metals is:
As metal can be recycled and reused indefinitely without losing the physical properties, scrap metal recycling allows us to preserve the finite resources we have on earth. Institute of Scrap Recycling Industries (ISRI) reports that, recycling one ton of aluminium save up to 8 tons of bauxite, and recycling one ton of steel conserves 1115 kg of iron ore, 625kg of coal and 25kg of limestone.
The amount of greenhouse gas emissions are reduced substantially through the practice of recycling metal material. According to ISRI, recycling metal may cut greenhouse gas emissions by 300 million to 500 million tons. In addition, using scrap metal instead of virgin ore generates 97 percent less mining waste and reduces 40% water pollution.