FIELD: process engineering.
SUBSTANCE: invention relates to production of carbamide granules with sphericity of over 75% and residual moisture content equal to or lower that 0.5% in jet layer apparatus. Fluid containing carbamide is fed into carbamide solid particle flow in apparatus with jet layer. Said carbamide solid particle flow is supported by gas flow fed from behind. Gas flow is fed into apparatus working chamber 8 approximately horizontally and turned therein. Carbamide particle-gas flow 15 is fed to jets 2 in working chamber 8 from lateral side. Note here that carbamide particle-gas flow rate between has jet entry at working chamber 8 and injection zone is increased by adjustable gas nozzles. Fluid containing carbamide is injected in area of higher density 22 on carbamide particle surfaces, dried and separated and granulated in gas flow.
EFFECT: dust-free granules, good flowability, soft surface.
16 cl, 4 ex, 1 dwg
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