Particle screening device for mineral processing

The utility model relates to a particle screening device for mineral processing. The particle screening device comprises a screening box. Openings are formed in the upper end and the lower end of the screening box, a feeding groove is fixedly connected to the right side of the screening box, a rectangular through opening is formed in the middle of a front side plate of the screening box, and a first arc-shaped groove and a second arc-shaped groove are formed in the left side and the right side of the middle of a rear side plate of the screening box correspondingly; by arranging the screening mechanism, a first screening plate and a second screening plate with different sizes of screening holes, different mineral particles can be screened, when the second screening plate is in a horizontal state, large-particle minerals can be screened, and when small-particle minerals need to be screened, a rotating wheel is rotated clockwise, so that the first screening plate is in a horizontal state, and the first screening