X-ray sorting is based on a planar projection of X-ray attenuation of a particle stream. These particles are distributed either on a chute or fast conveyor, and they are scanned and evaluated individually while passing. Hard X-ray radiation is emitted on one side of the material stream, and an image is recorded by a line scan detector on the other side. Following fig shows the working principle of a belt-type XRT sorter. The particles are fed to the machine via vibrating feeder, diverted down a shaped chute, stabilized on the high-speed conveyor, detected by the X-ray system, analyzed and classified in the sorter control, and rejected depending on the classification of each individual particles. The capacity of XRT sorting machines varies with particle size, bulk density of the feed and specific sorting tasks. XRT-sorters have been successfully installed for diamond concentration, processing of chromite, coal, iron ore, limestone, phosphate ore, talc, tin ore, tungsten ore and more.