PROCESS FOR PRODUCTION OF NITROGEN-POTASSIUM FERTILIZERS Russian patent published in 2000 - IPC

FIELD: inorganic fertilizers. SUBSTANCE: ammonium nitrate melt, to which 0.5-3.2% of magnesium sulfate is added, is mixed with potassium chloride (37-60%), resultant mixture is granulated on drum granulator, weight ratio of amounts of nitrogen in mixture before drum granulator and in final product being maintained within a range of 1.005-1.05. Fertilizer contains 12-25 wt % N and 16.6-40 wt % K₂O. EFFECT: reduced summary shutdown time caused by equipment failure and increased average hourly productivity of process. 4 cl, 1 tbl