Casale’s Granulated Complex Fertilizer process can produce more than 200 multinutrient fertilizer grades, including NPK, NS and NP binaries and diammonium phosphate (DAP) in plants with capacities ranging from 5 to 100 MTPH per train.

The process can be adapted to suit a wide range of available feedstocks:

  • If only solid raw materials are available, a conventional granulation plant is used. Steam is added in the drum granulator to promote agglomeration of the solids
  • If phosphoric and/or sulphuric acids are available, Casale Pipe Reactor technology is the preferred choice, with either a single pipe reactor located in the granulator (GPR) or the Dual Pipe Reactor process, with a Pipe Reactor in the granulator (GPR) producing NP slurry and a second one in the dryer (DPR) producing solid ammonium phosphate.

Key features

  • Conventional granulation plant as used in solid-feed granulation processes
  • Casale Dual Pipe Reactor technology for sulphuric and phosphoric acid neutralization by ammonia, comprising Granulator Pipe Reactor (GPR) and Dryer Pipe Reactor (DPR)
  • Proven design and wide experience
  • Wide flexibility in fertilizer grades, including 30-10-0, DAP, 17-17-17, 15-15-5 and more than 200 other grades
  • Wide range of feed materials, including ammonium nitrate, urea, ammonium sulphate and ammonia for N; superphosphate and phosphoric acid for P; and potassium chloride (MOP) and potassium sulphate (SOP) for K
  • Low recycle rate
  • Low energy consumption
  • Casale Dual Pipe Reactor technology can be easily implemented as a revamp
  • Efficient scrubbing system with zero liquid effluent.