On the grounds of the mechanism and kinetic regularities of granule formation of powder-like materials thegranulation,  superphosphate,  mechanism  of granulation,  kinetic  regularities, mathematical  model mathematical odel of the process in the drum devices has been constructed.  It has been established that granulating powder-like materials is stochastic as received granulometric composition-poludispersed what is determined by uneven completchess of granule dependent on sizes of the binding substance, drops, particles of  powder and such phenomena as  coagulation, destruction wear and deformation