METHOD OF TREATMENT OF GRANULAR FERTILIZERS Russian patent published in 2006 - IPC B01J2/30 C05C9/00 C05C1/02 C05G1/00 

FIELD: chemical industry; production of fertilizers.

SUBSTANCE: the invention is pertaining to the field of chemical industry, to production of fertilizers, namely to the methods of production of granular fertilizers, and in particular, to nitrogenous and complex fertilizers, and may be used at production of the granular fertilizers with the improved properties. The method of treatment of granular fertilizers provides for application on the surfaces of the fertilizer granules (for example, carbamide, ammonium nitrate, ammonium chloride, complex NPK fertilizers), having temperature from 45 up to 100°C of the mixture of the surface-active substances with the film-forming substance in the aqueous medium. For the application may be used both ionogenic and non-ionogenic surface-active substances. The film forming substance may be chosen from the group, which contains amino-formaldehyde resins and epoxide resins, polyvinylacetate and animal glues. The technical result of the application of the additives at the heightened temperature results in the fertilizers granules strength improvement.

EFFECT: the invention ensures the fertilizers granules strength improvement.

3 cl, 36 ex, 4 tbl