| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: invention relates to device for granulometric sorting and/or drying of materials that serves to process suspended mineral particles wherein, at least 90% of total mass make particles with size under 60 mm. Device is formed by vertical gas tube with upflow that comprises gas inlet arranged at the base, bottom outlet and top opening while material feed opening is arranged there between. Note here that part of material or so-called, "fines" may flow together with gas off via top opening due to upflow bearing capacity while another part of more coarse-grained material is not entrained by said gas flow and falls down into bottom opening. In compliance with this invention, proposed device comprises elements to create turbulence facilitating separation of grains of different size and changing into suspended state of material not trapped by gas flow at the point of entry. Said elements are arranged between bottom opening and tube feed opening and made up of, at least, partially, upflow obstacles made up of horizontal vanes rigidly jointed with gas tube inner wall and arranged with angular shift in height on, at least, two sequential ledges, that is, staggered to allow horizontal overlap. Said device may be used in drying module. Note here that gas inlet is communicated with preset temperature gas source. Continuous crusher with closed circuit, for example, for cement plant, comprises crusher of roll or ball type with inlet for material to be crushed and crushed material outlet, sorter-drier comprising granulometric sizing and upflow drying device including bottom outlet communicated with crusher inlet and volatile material outlet. Feed opening is arranged between aforesaid outlets to feed material. Crusher comprises also dynamic separator with, at least one inlet communicated with, at least, said volatile material outlet, selected material outlet and other material removal outlet communicated with inlet in crusher, filter to filter out material contained in gas communicated with dynamic separator outlet. Crusher outlet is communicated with, at least, one inlet of material in said dynamic separator and/or sorter/drier feed opening. Besides, is comprises, at least, one unit to feed material in said inlet of crusher and/or in sorter/drier feed opening. ^ EFFECT: higher efficiency of processing. ^ 11 cl, 7 dwg |
