The article draws on the intense deformed condition of a particle and camera wall within their interaction in the course of receiving granules by the PREP method. The criterion is an admitted threshold of elastic plastic deformation providing the set quality of granules. It is shown that modeling of the intense deformed condition of the particle and camera wall within their interaction is the effective tool for the research of a process of receiving granules by PREP method. The approach suggested allows to predict quality of granules. The developed mathematical model has an applied value. The model allows to calculate the process modes when receiving granules from refractory metals and alloys, intermetallid, etc. It is executed the research of a process of collision of the titan-made particle with a steel wall by using the modern program ANSYS complex.