Hydrodynamics of two-chamber vortex dryers with counter-colliding twisted flows of a gaseous suspension

Results of experimental studies of the hydrodynamics of two-chamber vortex dryers are presented. Empirical relations are obtained for determining the critical velocity of gas outflow and the retentivity of an apparatus as a function of the operating and design parameters and the properties of the disperse material. It is found that the hydraulic resistance of the developed dryers does not depend on the properties of the treated material and is proportional to the square of the gas flow rate. Relations for calculation of the coefficients of hydraulic resistance for apparatuses not loaded and loaded with material are obtained.