TY JOUR TI ANALYTICAL MODEL FOR ESTIMATING THE EFFECT OF GRAVITATIONAL AND CENTRIFUGAL FORCES ON PARTICLE FRACTIONATION IN AN AIR-TYPE MULTI-VORTEX DUST COLLECTOR CLASSIFIER KW MULTI-VORTEX CLASSIFIER KW DUST COLLECTOR CLASSIFIER KW AIR CLASSIFIER KW PARTICLE FRACTIONATION KW SEPARATION OF PARTICLES FROM GAS KW BOUNDARY GRAIN DIAMETER KW VORTEX SEPARATION KW CLASSIFICATION OF FINE PARTICLES JO Herald of Technological University AU Prec, M.A. AU Zinurov, V.E. AU Dmitriev, A.V. AU Vdovina, V.A. PY 2025 IS 28 PB Kazan National Research Technological University