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Old Car Batteries

Did you know that batteries are being recycled?

Recycling lead-acid batteries keeps toxic materials out of
land fills and is creating a major new industry.

At the recycling center, the old batteries are dumped into a
hammer machine where they are smashed into pieces. A screen
then filters out the lead acid paste.

The broken pieces of lead and plastic falls into a water vat where
the lead and metals sink and the plastic floats to the surface.
The plastic is removed, cleaned and trucked to a plastics recycling
center, reduced to pellets to eventually make new car batteries.

The lead and other metals are sent to a separate pile. The lead
acid paste is neutralized, turned into water, a press squeezes
out the water leaving only lead paste. Which is added to the lead
and other metals pile.

The water from this process still contains some metallic residue.
It is treated with chemicals that causes the contaminates to
settle into a sludge at the bottom of the tank. The sludge is
pumped out and sent to the lead and metals pile. The remaining
water is filtered until it meets regulatory standards and now
can be poured down the drain.

Now back to that lead and other metals pile. Refined coal is added
to the pile , then it is sent to a dryer for about 20 minutes, then
a furnace for 10 hours. The lead liquidizes and other metals float
to the top and skimmed off.

The molten lead is mixed with caustic soda to make the remaining
contaminates float to the top and removed.

The lead is then poured into bar molds and any remaining impurities
are skimmed off. Each bar has enough lead to make 3 new car
batteries.

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