hammer mill or disc mill skiold has the right solution
A disc mill is used to pulverize solid materials. The material is placed between two discs, one of which rotates. Sorting is automatic, producing particles of uniform size. Disc mills often are used to pulverize ceramics, ore and construction materials. Disc mills can have a vibrating feature. Power consumption per pound generally higher than roller mill, but highly efficient on Circ-U-Flow model hammer mill due to 300 degree screen and large rotor diameter resulting in high tip speed. Perforated screens or grates are used to regulate particle size Post grinding, i.e. positioning of the mill after the grain blending process, is possible.