2. Clay Content

If the material contains a mixture that tends to agglomerate, such as clay, screening can be challenging even if the moisture content is very low. Clay materials tend to clump together during screening, causing fine clay particles to mix with the screened product and easily clog the screen holes. Clay-rich and viscous materials are usually only screened with larger mesh screens in special cases. In wet screening, the productivity of the screen is higher compared to dry screening, depending on the screen hole size. The amount of water consumed in wet screening depends on the nature and quantity of the clay mixture, fine clay, and dust particles.

3. Particle Size Characteristics

The particle size characteristics that affect the screening process mainly refer to the content of various particle grades in the raw material that are significant to the screening process. When there is a low content of fine particles in the raw material, and the material on the screen is too coarse, a pre-screening method can be applied. By using a larger mesh auxiliary screen, the over-coarse particles can be pre-screened, and then finer materials containing a large number of fine particles can be screened to improve efficiency and extend the life of the screen mesh.