Abstract: When being used to viscous mixed ore,the ordinary apron feeder often demonstrates some troubles,mainly the clogging of material.Besides,the investment and production cost of apron feeder are allways high.Based on the theory of autogenuous synchronization and directional vibro-excitation and by means of reliable design and advanced technique such as frequency-modulating speed controller,a large vibro-feeder has been developed.Its investment and production cost is reduced respectively by 7 and 9 times of that of the apron feeder.Application practice of this vibro-feeder shows it can replace the apron feeder.