Drying of heterogeneous systems, one of which also includes sorize groats, is a complex process that has not yet been fully explored because of the essential problems that arise in research of various parameters influencing the drying process. Close down methods of calculating the drying kinetics are the most progressive, based on the study of general principles of the process, which approaches the drying theory and practice. Best dependency generalized equation drying process is dependent multiplicative parameter output factors influencing this process. For experimental data was compiled program that brings preventive multiplicative equation to linear form. Data processing package was used to approximate mathematical MathCAD program dependencies discrete experimental data with continuous functions. Problem identification process we made as a drying curves graphically built on mathematical equations.