METHOD OF PREPARING ZINC NITRATE-PHOSPHATE CONCENTRATE

摘要

FIELD: chemistry. ^ SUBSTANCE: method of preparing zinc nitrate phosphate concentrate involves mixing phosphate- and zinc nitrate-containing reagents. The zinc nitrate-containing reagent used is aqueous zinc nitrate solution with the following ratio of components: Zn2+:NO3Çè-:H2O=(1-1.27):(2.53-2.98):(3.94-5.02). The phosphate-containing reagent used is aluminium phosphate with the following ratio NH3 : P2O5 = 0.6 : 2.57 in amount of 70-100% of total content of P2O5 in the concentrate and phosphoric acid from 0 to 30% of the total content of P2O5 in the concentrate. ^ EFFECT: invention increases output and reduces cost of concentrates, widens the raw material base for producing concentrates, increases safety of production conditions. ^ 3 ex