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“The information age’s toxic garbage” A review of electronic waste (e-waste) ... - page 19 / 24

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METALS RECYCLING IN EEE WASTE-2

SECONDARY COPPER (Cu) RECOVERY

5-40% Cu containing electronic scrap are fed into a blast furnace. Cu-compounds have to be reduced by scrap Fe and plastics. Sn, Pb and Zn impurities are also reduced as gas fumes.

Energy needed to reclaim Cu from EOL e-waste is only one sixth of the energy that would be required to produce from Cu ore.

(Coke, wood or plastic)

Air/O2

Scrap Cu

H2SO4

Slag: roof shingles, sand blasting and blasts for railroads

Scrap Fe, plastics

Impurities (Sb, Pb, Zn) burned, Fe goes to slag

Ni, Zn, Fe removed

Burning cables for Cu

Slimes

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