Color sorter is a kind of equipment which can sort out bad color particles in granular materials automatically by photoelectric detection technology according to the difference of photometric characteristics of materials. The material feeding to vibration feeder from the inlet, then into the chute evenly, the materials which have Irradiated by light exposed macro CCD camera lens, and selecting materials through chip of calculation with the microkernel architecture, the impurity put into vice-materials channel by leading electromagnetic levitation solenoid valve, finished product into the next process through the outlet. Multi-channel color sorter with more groups of channel, there is not only more materials processing capacity but also higher classification efficiency for different standard finished products. A deviceâ??s operation with a primary cleaning and check, or a primary cleaning and check plus secondary check. On the premise of increasing the output of finished material, it can also ensure that the ratio of impurities taken out is greatly reduced.