Experimental and Industrial Introduction of the Improved Devices to Generate NH4NO3 Granules with Nanoporous Structure

Abstract

The first results are obtained, which confirm that the formation process of porous ammonium nitrate can be carried out in the drying agent's vortex flow with high intensity. It is proved that combination of humidification and thermal treatment methods of ammonium nitrate granules in the vortex weighted layer allows to get a product with developed nanoporous structure, high indexes of the absorptivity, retentivity and firmness. The nanoporous structure of porous ammonium nitrate granule is studied. It is demonstrated that in order to provide normative indexes of porous ammonium nitrate quality, various structure of the granule surface and inner layers is required. The presented results together with theoretical studies performed earlier in the sphere of flows hydrodynamics and granules porous structure formation thermal dynamics in the twisting flow of the heat transfer agent are bases to investigate technique of vortex granulators' engineering calculation.