Przemysl Chemiczny, Vol.94, No.12, 2167-2172, 2015
Effect of chemical composition change of feeding streams on the quality of fertilizer granules from an industrial plant
After the new unit of HNO3 neutralization with NH3 was taken into operation in the granular fertilizer prodn. line, a deterioration of the product quality was obsd. as the compression strength of granules and their thermal shock resistance decreased. Effect of additives, impurities, NH4NO2 concn. and temp. on the product quality was studied to improve the prodn. process. Change of the site of H2SO4 dosing to HNO3 before neutralization resulted in restoring the product quality.