The dynamic model of a gravitational current of loose grain mix on an inclined surface

We consider the motion of a grain mix on an inclined surface under conditions allowing to make fractionation depth layer with subsequent separation in the cells of the receiver. The research objective is to study the process of self-sorting of particles of grain mix in a layer of grain material at the movement in a rectilinear trench. The description of this process is formulated by means of the equation of the return diffusion in the form of the mathematical model allowing to determine some design data of technological installation. The novelty consists in that analytical methods of the research of such currents are far from end and until now enough adequate mathematical models are not created. The mathematical model reflecting the process of self-sorting of grain particles at a gravitational current in a rectilinear trench is received.