Obtaining of the Modified NH4NO3 Granules with 3-D Nanoporous Structure: Impact of Humidifier Type on the Granule’s Structure
The article deals with the study of the porous ammonium nitrate granules’ (PAN) nanoporous structure of surface and surface layers. The research results, presented in the article, show that the suggested way to generate PAN allows to provide the granule porous structure without destruction of core and disposal of air from the granules. Analysis of experiments results has shown that various types of humidifiers can form various kinds of pores after drying – “mechanical” pores and “modification” pores. Various types of humidifiers have significant effect on the ratio of values of “mechanical” and “modification” pores. The obtained results allow to select the optimal humidifier composition, which promotes the formation of significant amount of macropores on surface and mesopores of near-surface areas.
KeywordsNanoporous structure Humidifier Porous ammonium nitrate Vortex granulator
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. 0116 U006812. The authors thank researchers of Processes and Equipment of Chemical and Petroleum-Refining Industries Department, Sumy State University; Institute of Solid State Physics, University of Latvia; and Department of Chemical Technology, National University of Río Cuarto, Argentina, for their valuable comments during the article preparation.
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