PRODUCTIVITY OF A DRUM GRANULATOR AND DRYER AND AMMONIUM PHOSPHATE QUALITY

摘要

A calculation procedure is developed for the productivity of a drum granulator and dryer (DGD) in ammonium phosphate production. It is shown that it determines the permissible heat carrier moisture content and ammonia content within it. These parameters are connected through the original phosphoric acid concentration. A dependence is observed experimentally under industrial conditions for product consolidation on ammonification time in a tubular reactor. A mechanism is proposed for "lamellar" granule formation, affecting ammonium phosphate quality. Drying regimes and granulation are recommended, minimizing the "lammelar" granule content of the product.