It is used for large-size dry separation of coal and coal gangue, replacing traditional manual picking. Manual picking has problems such as low picking rate of gangue, poor working environment for manual workers, and high labor intensity. The intelligent dry sorter can remove most of the gangue in advance, reduce the labor intensity of workers, reduce the power consumption and wear of the crusher, greatly reduce the amount of ineffective washing entering the main washing system, reduce the sludge of gangue and the load of the slime water system, and effectively improve and stabilize the quality of raw coal for washing, and reduce the cost of coal preparation.