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Zinc is a recyclable material. At present, about
30% of the world's zinc supply comes from recycled
zinc. In other words, some 3 million tons of zinc
are recycled every year.
Zinc is recycled from zinc-containing products
which are recovered after use: post consumer waste
such as brass fixtures and fittings (brass is
an alloy of zinc and copper), die-cast zinc parts
and galvanized steel, recovered from automobiles,
household appliances or electrical components.
Zinc is also recovered from process scrap, such
as galvanizing residues, furnace dust and ashes,
offcuts, foundry returns and brass machining scrap.
The brass industry alone recovers more than 600,000
tons of zinc each year.

It is difficult to estimate precisely the recovery
rate of zinc since many zinc products have a very
long life span. For example, zinc sheet used for
roofing can be expected to last for over 100 years
without maintenance before it becomes available
for recycling. Nevertheless, estimates based on
historical consumption and product life cycles
suggest 80% of the zinc available for recycling
is in fact recycled. Zinc can be recycled indefinitely
without any loss of its physical or chemical properties.
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