Kochergin N. Hydro and thermodynamic conditions for formation of porous structure of ammonium nitrate prills.

The thesis is dedicated to determination of thermo-and hydrodynamic factors that make possible to create porous structure in previously formed ammonium nitrate prill as well as to development of scientifically grounded recommendations in relation to running this process in vortical granulator work chamber. The simulation of thermo-and hydrodynamic conditions of porous structure formation in a solid prill after its treatment in humid environment was carried out. The physical and mathematical models that supply an explanation for process of porous structure formation in previously formed prill were proposed. Based on the results of experimental research the hydro and thermodynamic characteristic of prills processing conditions were obtained for the purpose of porous structure formation. The properties of porous ammonium nitrate were studied upon condition of forming porous structure from solid prill.