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increase in the drying agent’s twisting causes damages in the granule caused by the
intensive collision of the granules with each other and with the walls in the granulator. Besides, an increase in the drying agent twisting degree over 8.1 m/s leads
to an increase in heat loss in the granulator’s “active” zone through the wall of the
device. Data from Fig. 6 shows that the relative area of the nanoporous surface can be
increased. Therefore, the second stage of the research is devoted to the microscopy
of granule samples obtained in granulators with stabilization of the drying agent’s
vortex flow. The results of these studies are presented in Fig. 7.
Fig. 7 Microscopy of the nanoporous surface of the granules obtained by using various methods
of stabilizing the drying agent’s vortex flow: a granulator with a stabilization grid under the vortex
gas-distributing unit; b granulator with a two-stage swirler
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