“Covanta has increased ferrous metal recycling from waste to bottom ash by upgrading its magnetic sorting systems” their waste energy facilities’ new method could potentially recover 7.5 million tons of metal each year.

Bottom ash is what results from burning mixed solid waste (Covanta burns this to generate energy), combustion and air pollution control take place and then, bottom ash is produced. The amount of metals in the ash is significant and magnets are then used to capture the metals from the ash which will then be recycled.

non ferrous scram drumBy updating their equipment they found that they were able to capture more ferrous and nonferrous metals from waste. The rare earth magnetic scrap drum is one such piece of equipment, as it has the power to attract more metals across its surface compared to other magnets.

Some weeks ago we posted some amazing articles about capturing precious resources and using magnets.

This article talks about a satellite equipped with a giant magnet in space that collects orbiting debris: https://wastetracking.wordpress.com/2014/06/24/japan-prepares-to-launch-giant-net-into-orbit-to-sweep-up-space-debris/

And these robots are designed to separate more debris from mixed construction and demolition debris: https://wastetracking.wordpress.com/2014/07/26/for-those-in-robotics-construction-and-waste-prepare-to-be-amazed-by-zenrobtics/

It turns out that magnets do a lot more than just deliver music to our ears.

Source: http://www.waste-management-world.com/articles/2014/08/case-study-increased-metal-recycling-from-waste-to-energy-ash-with-rare-earth-magnet.html