One of the simplest roller mills is a pair of rollers of the same size, one fixed and the other adjustable.
The two rollers rotate in opposite directions at the same speed, and the maximum diameter of the roller is 250mm.
The degree of crushing of roller crusher is coarser, and satisfactory filtration rate and yield of wort can be obtained by roller crushing only the malt with good dissolution.
For this purpose, roller grinding must meet the following conditions: malt feed evenly distributed on the roller.
Feed in small amounts.
Feeding rates of 5-20 kg/h per cm drum length also require malting to be absorbed by mal to meet minimum quality standards.
The crusher should run at a low speed of 160-180 r/min.
If there are high demands on the crushed malt, or if the crushed malt is to be crushed, it is obviously necessary to repeat the roller crushing process to form a four-high mill or a multi-high mill with two pairs of rollers facing up and down.