Micro-Pelletizing of Down Stream Phosphate

This work presents the results of micro-pelletizing tests of ultra fines generated during the drying phosphate pulp (Khouribga grades), which have undergone processing operations of filtration and drying. This study examines the potential of these ultra fines granulation with the addition of a granulation binder, and in order to avoid their flying during handling and transportation. The ultra-fine micro-granules are subjected to physical tests in view of assessing, on the one hand, the relevance of pelletizing, and on the other hand, the effectiveness of the granulation binder tested. Thus, the physical properties of granular products were determined by measuring their rate of friability and particle size. The results obtained show that granulation yields are between 84% and 86%. Friability rates registered for all the studied grades are relatively low.