FIELD: process engineering.
SUBSTANCE: invention relates to separation of high-density and larger impurities from granular materials and can be used in various branches of national economy, for example in agriculture and various industrial enterprises. All versions of proposed plant use device with fluidised layer that has inlet hole to receive granular material to be fluidized. There is also inlet hole to receive first flow of fluidising medium that can represent primary heat flow, secondary heat flow at least one off-heat flow, or whatever combination thereof. There is at least one outlet hole to unload required flow of granular material from fluidised layer and at least one hole to unload granular material particles flow that can not be fluidised and contain increased concentrations of impurities or other undesirable components. Fluidised layer accommodates a device to feed particles that can not be fluidised to holes of their unloading In compliance with one version, device with fluidised layer is communicated with collector to receive unloaded flow of granular material particles that can not be fluidized. Note that said collector can comprise additional means to dissect grain material particles that can not be fluidised, second fluidising flow to concentrate impurities or other undesirable components. Above describes units are used to implement proposed separation method.
EFFECT: higher efficiency, lower costs.
39 cl, 30 dwg, 5 tbl, 3 ex
