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Recycling Batteries

How a Lead Battery is Recycled

Description: http://www.batterycouncil.org/portals/0/images/RecycleChart.GIF

The battery is broken apart in a hammer mill, a machine that breaks the battery into pieces.

The broken battery pieces go into a vat, where the lead and heavy materials fall to the bottom while the plastic rises to the top. At this point, the polypropylene pieces are scooped away and the liquids are drawn off, leaving the lead and heavy metals. Each of the materials then begins its own recycling journey. We'll begin with the plastic, or polypropylene.

Plastic

The polypropylene pieces are washed, blown dry and sent to a plastic recycler where the pieces are melted together into an almost-liquid state. The molten plastic is put through an extruder that produces small plastic pellets of a uniform size. Those pellets are sold to the manufacturer of battery cases, and the process begins again.

Lead

The lead grids, lead oxide and other lead parts are cleaned and then melted together in smelting furnaces.

The molten lead is poured into ingot molds. Large ingots, weighing about 2,000 pounds are called hogs. Smaller ingots, weighing 65 pounds, are called pigs. After a few minutes, the impurities, otherwise known as dross, float to the top of the still-molten lead in the ingot molds. The dross is scraped away, and the ingots are left to cool.

When the ingots are cool, they are removed from the molds and sent to battery manufacturers, where they are re-melted and used in the production of new lead plates and other parts for new batteries.

Sulfuric Acid

Used battery acid can be handled in two ways.

The acid is neutralized with an industrial compound similar to household baking soda. This turns the acid into water. The water is treated, cleaned and tested to be sure it meets clean water standards. Then it is released into the public sewer system.

Another way to treat acid is to process it and convert it to sodium sulfate, an odorless white powder that's used in laundry detergent, glass and textile manufacturing. This takes a material that would be discarded and turns it into a useful product.  Acid can also be reclaimed and reused in new battery products through innovative recycling processes

Safe Recycling Practices

Identifying Lead Batteries from Lithium-ion Batteries

There is serious risk of fire and explosion if a lithium-ion battery enters the lead battery recycling stream. While batteries can appear similar, it is important to make sure lead and lithium-ion batteries are properly identified and sorted. Use this flyer to practice safe recycling.

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Recycling Rechargeable Batteries

Every battery has a different recycling journey. Consumers can safely recycle nickel cadmium, nickel metal hydride, lithium ion, nickel zinc and small sealed lead batteries through Call2Recycle

Safe Transporting Information

The Pipeline and Hazardous Materials Safety Administration has created a resource used to inform consumers how to safely transport batteries.

 para el póster en español, por favor haga clic aquí
 
or you can say, "oprime aqui"