In the process of using swing screen equipment, there are many factors that can affect the swing screen, such as the characteristics of the swing screen, operating conditions and the nature of the material. The following is an analysis of the effect of the material on the rotating screen: The effect of the material characteristics on the screening process is mainly reflected in the particle size composition of the material being screened, water content, mud content and particle shape.
Among them, the influence of material size composition is particularly important. The content of easy sieving particles, difficult sieving particles and obstructing particles in screening materials is an important factor affecting the number of screening operations and quality index. The higher the content of easy sieve particles, the easier the screening, and the feed rate is constant. With the increase of the content of easily sieved particles, the screening was improved. The higher the content of difficult-to-screen particles and obstructing particles, the more difficult the screening will be, and the quantity and quality indexes of the screening operation will be reduced accordingly. Therefore, in practice, it is usually required that the larger bulk size of the human screen material is not greater than 2.5 to 4.0 times the mesh size.
If the screening material contains more water or mud, fine particles may bond into clumps or adhere to the surface of the coarse particles without easily penetrating into the sieve, greatly reducing the screening rate. Therefore, when there is more water in the material and more mud, wet screen or pre-wash decontamination must be used to strengthen the screening process and improve the screening index.
In addition, the particle shape of the screening material also has a certain influence on the screening process of the rocking screen video. Generally, round particles pass easily through square holes, bar, plate, and sheet particles do not pass easily through square holes, and pass easily through long holes. In actual production, the particles that crush the product are mostly polygons, and it is easier to pass through square mesh than round mesh.