Grain grinding (getting flour)
At our production facilities, grain is crushed on roller machines, the main working bodies of which are two cylindrical cast-iron rollers of the same diameter with riffles cut on them. The rollers rotate towards each other at different speeds. The gap between the rollers is set depending on the required size of the product grinding in the range of 0.15-0.75 mm.
The product coming out of the roller machine is not uniform in particle size, but is a mixture of different size and different quality of grains: some are very small, others are large; some are pure endosperm, i.e. the highest quality product, while others consist of an endosperm with a certain proportion of shells not separated from it.