| 摘要 |
FIELD: chemical industry. ^ SUBSTANCE: method comprises neutralizing phosphate acid by ammonium, granulating, drying the product in the drum granulator-dryer, classifying granules, and cooling the finished product in a fluidized bed, with supplying ammonium for neutralizing in amount that exceeds the value required for the product by 0.2-0.5% (on conversion to nitrogen). The finished product is cooled under the rarefication of 300-600 mm Hg, and the fluidized bed is blown by the atmospheric air produced in the rarefication. ^ EFFECT: enhanced efficiency. ^ 3 ex |
