The utility model relates to the technical field of
powder processing, and particularly discloses an ultrafine
powder microbead sorting
system which comprises a
raw material warehouse, a primary grading buffer bin, a primary vertical single-rotor grader, a bag type
dust collector I, a secondary vertical single-rotor grader, a
cyclone collector, a bag type
dust collector II and an ultrafine
powder bin which are sequentially communicated in series, the first-stage vertical single-rotor grader is further connected with a primary powder selecting coarse powder bin, the second-stage vertical single-rotor grader is further connected with an ultrafine grading coarse powder bin, and the
cyclone collector is further connected with a secondary
fine powder bin; according to the
fly ash secondary sorting device,
fly ash is subjected to secondary sorting, micro-bead products with different mesh numbers are selected through control, large-particle-size powder is conveyed to other procedures to participate in
grinding and sorting, small-particle-size powder can replace talcum powder, silica powder, ground
calcium carbonate and other
filling materials in the
coating industry, the application industry of
fly ash is widened, and the application range of fly ash is widened. The recycling of the fly ash is improved, the
energy consumption is reduced, and meanwhile, the environmental
pollution caused by mining is reduced.