Why do modern municipal recycling plants install powerful rotating magnetic drums above conveyor belts…
Why do modern municipal recycling plants install powerful rotating magnetic drums above conveyor belts carrying shredded urban waste?
To sterilize plastic containers before recycling
To pull out ferrous metals like steel cans from mixed non-magnetic waste
To melt aluminum foil using magnetic heat
To separate light paper waste from heavy glass bottles
Solution
Magnetic drums attract and pull out iron and steel (ferrous materials) automatically while letting non-magnetic waste like plastic, glass, and aluminum pass through.