To understand the process of separating on the sieve of a solid particles heterogeneous mixture has to be known, first of all, the solid particle movement on the working surface. Therefore, in this article is presented a method for determining these characteristics. The working methodology was based on the processing of some video recordings used to obtain some numerical data for the solid particle movement on the oscillating surface, respectively the values for all three axes OX, OY and OZ. These parameters were used to calculate both the speed and acceleration of the solid particle.