FIELD: chemistry.
SUBSTANCE: invention relates to methods of producing carbamide-based fertiliser. The method involves feeding carbamide granules into a revolving drum and simultaneously spraying molten sulphur onto the surface of the carbamide granules in the revolving drum. Temperature of the carbamide granules fed into the drum is equal to 20-60°C. The revolving drum has blades mounted on its inner surface. The rotation speed of the drum is equal to 81-99% of the whirling speed. Molten sulphur is sprayed in the direction of the axis of rotation of the drum.
EFFECT: invention ensures uniform coating of granules with sulphur.
3 dwg, 6 ex
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SU1293172A1 |
