Formation of the Ammonium Nitrate Nanoporous Structure in the Vortex Device with Pre-humidification of Granules

The article deals with morphological features of the nanoporous surface of ammonium nitrate granules obtained through the humidification of the ordinary ammonium nitrate followed by heat treatment. A new method to produce porous ammonium nitrate in a vortex device with a remote pre-humidification zone is proposed. The morphology of the initial granules of the ordinary ammonium nitrate, ammonium nitrate after humidification and heat treatment in a vortex granulator, and ammonium nitrate after humidification and heat treatment in a vortex granulator with a pre-humidification zone is compared. The obtained data form the basis to improve the technology of the porous ammonium nitrate production in devices with active hydrodynamic modes.