GRANULATED NITROGEN FERTILISER WITH REGULATED DISSOLUTION RATE AND METHOD OF ITS PRODUCTION Russian patent published in 2017 - IPC C05C1/00 C05C9/00 C05D5/00 

FIELD: agriculture.

SUBSTANCE: granulated nitrogen fertiliser includes carbamide and ammonium nitrate, the granules containing the mixture of carbamide and ammonium nitrate as parts of the homogeneous composition with magnesium hydroxide nitrate of the formula nMg(OH)₂ Mg(NO₃)₂ mH₂O, where n=1, 3, 5 and m=0-8, which determine the rate of fertiliser dissolution in the soil. The method for producing the granulated nitrogen fertiliser comprises mixing the caustic magnesite with a nitrogen fertiliser in an amount providing the mass ratio N:MgO=1:(0.2-0.6), mixing the resulting slurry till forming a homogeneous creamy mass, cooling and pelletizing.

EFFECT: invention allows to obtain a granulated nitrogen fertiliser with the regulated rate of dissolution in the soil, containing all the basic forms of nitrogen at the optimum ratio.

3 cl, 2 tbl, 9 ex