They're separated using an " Air Classifier" , which is a fan that pushes lighter goods, like aluminium and plastic, toward a higher conveyor belt, while allowing glass, which is heavier, to fall down to a lower conveyor belt.

它们通过空气分离器被分解，空气分离器是用来分离更轻物体的风扇，像铝和塑料，会被吹到更高的传送带，而较重的玻璃则落到较低的传送带。