Research has been conducted and the design of a grain mixture grinder has been improved, and the technological parameters of raw material grinding have been optimized. A rotor-ventilator crusher has been developed and proposed for preparing mixed feed and mixing the components of grain additives. Mixing of wet feeds was carried out at the optimal values of the factors found during the study of mixing of dry bulk feeds. Methods for increasing the efficiency of the feed production process and creating optimal airflow conditions in all elements of the mixed feed unit have been substantiated. Dependencies are obtained that allow:

- determine the productivity of pneumatically loaded grain crushers depending on the design of the loading device (ejector);

determine the conditions for introducing grain meal into the grinding chamber of the crusher with rigidly fixed beams, in which the peripheral and end sieves are loaded uniformly.