NITROGEN FERTILIZER Russian patent published in 1998 - IPC

FIELD: agriculture. SUBSTANCE: claimed nitrogen fertilizer comprises ammonium nitrate in amount of 76-94% and additive in amount of 6-24%. Additive comprises clinoptilolite, calcite, montmorillonite, hydromuscovite, cristobalite and quartz, their ratios being as follows (wt %): 30-40 clinoplilolite; 3-40 calcite; 5-20 montmorillonite; 5-15 hydromuscovite; 5-28 cristobalite, and 10-22 quartz. Additive of the claimed fertilizer can be added to natural zeolite stock which is advantageous in that it contains wide spectrum of microelements such as Cu, Mo, Mn, Zn and Co. EFFECT: improved properties of the nitrogen fertilizer. 2 cl, 1 tbl