Three-stage crushing system for recycling steel casting sodium silicate waste sand

The utility model discloses a three-stage crushing system for recycling steel casting sodium silicate waste sand. The three-stage crushing system comprises a belt conveyor, a hammer crusher, a magnetic separator, a bucket elevator, a vibrating feeder and a vibrating crushing regenerator, a mechanical crusher is arranged above the feeding end of the belt conveyor; the discharge end of the belt conveyor is correspondingly communicated with the feed port of the hammer crusher; a discharge port of the hammer crusher is correspondingly communicated with a feed port of the magnetic separator; wherein a sand outlet of the magnetic separator is correspondingly communicated with a feed port of the bucket elevator, a discharge port of the bucket elevator is correspondingly communicated with a feed port of the vibratory feeder, a discharge port of the vibratory feeder is correspondingly connected with a feed port of the vibratory crushing regenerator, and a discharge port of the vibratory crushing regenerator is corresp