Physico-Chemical nanomaterials science

Hydrodynamic and thermodynamic conditions for obtaining a nanoporous structure of ammonium nitrate granules in vortex granulators
Ivaniia A.V., Artyukhov A.Y., Olkhovyk A.I.
Processes and Equipment of Chemical and Petroleum-Refineries Department, Sumy State University, 2, Rymskogo-Korsakova str., 40007, Sumy, Ukraine. 
E-mail: a.ivaniya@pohnp.sumdu.edu.ua

Creation of a developed nanoporous structure on the surface and inside ordinary ammonium nitrate granules (which is used as a mineral fertilizer) considerably extends the areas of its application due to the acquisition of special properties. Single- and multilayer granules of porous ammonium nitrate are used as the main component of the industrial explosive ANFO [1]. Granules of ammonium nitrate with nanoporous organic shell are successfully applied in agriculture [2,3].
The results of theoretical and experimental studies to determine the optimal hydro- and thermodynamic conditions for the obtaining of PAN granules, including multilayer, in a vortex granulator we present in this paper.
The conducted studies demonstrate the influence of the heat treatment regime, the hydrodynamic mode of the apparatus and its design (configuration of the working space, the way of creating the vortex movement of granules, etc.) on the qualitative and quantitative composition of the PAN.
Optimum hydrodynamic and thermodynamic conditions for obtaining nanoporous structure of ammonium nitrate granules are acquired.
This work was carried out under the project «Improving the efficiency of granulators and dryers with active hydrodynamic regimes for obtaining, modification and encapsulation of fertilizers», state registration No. 0116U006812. 

1.	Erode G.M. Ammonium Nitrate Explosives for Civil Applications: Slurries, Emulsions and Ammonium Nitrate Fuel Oils // Weinheim: Wiley-VCH Verlag & Co, 2013. – 230 p.
2.	Artyukhov A.E., Sklabinskyi V.I. Experimental and industrial implementation of porous ammonium nitrate producing process in vortex granulators // Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. – 2013. – 6. – P. 42-48.
3.	Artyukhov A.E., Ivaniia, A.V. Obtaining porous ammonium nitrate in multistage and multifunctional vortex granulators / Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. – 2017. – 6. – P. 68-75.