METHOD FOR PRODUCING GRANULATED CARBAMIDE

The invention relates to methods for producing urea-based fertilizers on the basis of urea and, more specifically, to methods for producing fertilizers containing urea and elemental sulfur. Sulfur-coated granulated urea is produced by introducing urea granules at a temperature of 20-60°C into a drum...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOSTIN, Oleg Nikolaevich, CHEBLAKOV, Nikolai Valentinovich, ERMOLAEV, Dmitry Alekseevich, ESIN, Igor Veniaminovich, SERGEEV, Yury Andreevich, KOTOVA, Natalya Nikolaevna, ANTIPOV, Stanislav Aleksandrovich, SOLDATOV, Aleksei Vladimirovich, PROKOPYEV, Aleksandr Alekseevich, KUZNETSOV, Nikolai Mikhailovich
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMISTRY FERTILISERS MANUFACTURE THEREOF METALLURGY NITROGENOUS FERTILISERS PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to methods for producing urea-based fertilizers on the basis of urea and, more specifically, to methods for producing fertilizers containing urea and elemental sulfur. Sulfur-coated granulated urea is produced by introducing urea granules at a temperature of 20-60°C into a drum which has blades mounted on the inside surface thereof and rotates at a speed equal to 81-99 % of the critical speed of rotation of the drum, and by spraying a sulfur melt onto the surface of the urea granules. The melt is sprayed in the direction of the axis of rotation of the drum. The method provides for the even coating of the granules with sulfur.