Disclosed herein is a metal sorting device including an X-ray tube, a dual
energy detector array, a microprocessor, and an air ejector array. The
device senses the presence of samples in the x-ray sensing region and
initiates identifying and sorting the samples. After identifying and
classifying the category of a sample, at a specific time, the device
activates an array of air ejectors located at specific positions in order
to place the sample in the proper collection bin.