How much aluminium is recycled in the world yearly?

How and why are metals such as iron and aluminium recycled?

  • Answer:

    The metals are collected and then melted at high temperature. They then have any impurities scraped off the top of the container of molten metal. The pure molten metal is then poured into casts and cooled. The blocks of metal can now be used again. It is cheaper and less environmentally damaging to recycle metals rather than extract them from their ores, in the ground.

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