The incoming product is sorted according to its thickness. All grains thinner than the screen holes fall through the screen, whereas all thicker grains which remain in the screen cylinder are transported to the outlet. The permanent circulation of the product and the resulting centrifugal force cause each grain to come in contact with the screen perforation. As a result, sorting operations can be carried out with high accuracy.
The modular system of the grading cylinder ensures a flexible configuration of various designs, so that the grading cylinder can be optimally adapted to the respective product specification or process. As general rule, two fractions are produced. If two grading cylinders are installed in series, more fractions can be produced and classified at the same time. Each classified product gets to a separate outlet.
The grading cylinder can also be operated in parallel, which allows a higher throughput to be obtained. Thanks to the large lateral assembly flaps a quick and easy change of the respective grading cylinders can be ensured.
Advantages of the grading cylinder:
- Rapid screen change
- Adjustable screen inclination
- Permanent cleaning of the cylinders
Prior to many process steps, sizing helps to improve further treatment. This is particularly important prior to flaking in order to obtain a uniform product pattern on the flaking roller mill.