Old Computers Are Not Deleted: The Electronics Recycling Process

April 17, 2017 – 07:41 am

ewaste recycling assembly lineHMR workers manually dismantle most electronic equipment and sort out valuable commodities that
are sold to various recyclers.

CRTs ready to be "crushed" for recycling. HMR accumulates quantities like this each week.

The CRT crusher is completely self-contained in a transportable shipping container.

Crushed CRT glass, coated with lead, ready for processing by a lead smelter.

Other components from electronics
are separated and sold as commodities
to various recyclers.

The recycling process for CRTs begins on a disassembly line. Workers remove the recyclable plastic or wooden case, metal chassis, yoke, PC board, wire and metal strap from the CRT. These materials are all sorted for individual commodity sales.ewaste recycling assembly line The resulting CRT is a whole glass tube (impregnated with lead) with an internal metal frame.

The CRTs are then loaded onto a conveyor system that leads into the CRT crusher. HMR built the CRT crusher in a transportable shipping container. This self-contained unit allows for easy transportation, total weather protection, dust containment and complete air filtration. The crusher can process 100-150 CRTs per hour, or over 15 tons per day.

ewaste recycling assembly lineOnce the CRTs enter the crusher, they drop into a rotating hammer mill. The hammers hit the glass, causing the CRT to implode into pieces of glass and metal. A magnet pulls metal from the mix, and a screen is used to sift the glass to produce the desired size. Metals and crushed glass are separately discharged from the bottom of the system into commodity containers for shipment. The lead-contaminated glass is shipped to a primary lead smelter in Missouri. The smelter uses the glass as a fluxing agent in the processing of raw lead ore. The lead from the glass becomes part of their end product, which is then sold to be used in the manufacture of products such as new CRTs, x-ray shielding, bullets and batteries.

HMR sells virtually all materials from electronics to recyclers. Circuit boards are eventually ground up and smelted. The gasses...


Source: www.recycleworks.org

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