FIELD: measurement technology. SUBSTANCE: dry classifier of dust-like coal is meant for separation of fine-grain substances. Belt conveyer which transportation belt is fitted with longitudinal troughs, loading trough is installed with inclination in bearing framework, unloading unit of fine fraction is provided in head part of end roller, unloading unit of large fraction is located beneath it. Invention refers to process of drying and sorting of fine fraction of dust-like coal while it is supplied to rotating transportation belt of conveyer mounted with inclination. Finest particles of coal are left in troughs of transportation belt and are unloaded in head part of belt conveyer and larger particles skate down transportation belt installed with inclination and are transported further on. EFFECT: effective uninterrupted dry classification of dust-like material. 24 cl, 10 dwg
