Analysis about Factors Affecting Screening Process

When you are sieving materials, you must make the material in the loose state so that each particles can obtain the necessary energy and space for mutual displacement. In addition, you should also promote the coarse particles of the materials stuck in the mesh to shun away so that the fine particles of the materials can be better screened.
First, the experts of Henan Hongxing Mining Machinery will briefly introduce the screening process. Large numbers of granular materials with different particle size are sent to the surface of the vibrating screen. Only part of the small particles can directly contact with the screen surface. Most particles which are smaller than the size of mesh distribute throughout the material layer. Due to the relative movement of the material with the sieve surface, the material layer on the screen surface is loose so that the gap that already exists between the large particles is further expanded. The small particles transfer to the lower layer through the gap, but particles can not pass through the small gap between the small particles. As a result, the large particles in motion location are rising, while the position of the small particles decline so that the original chaotic particles are isolated. In this way, the screening process is completed.
Second, let us analysize the factors affecting the screening process.
In the actual screening process, the particles which are smaller than the mesh will be under the sieve. There are many affecting factors, including the nature of the material, the performance of the screening equipment and operation management of the screening machine. The natures of the materials which have the impact on the screening process mainly include the relative size of the particles and the mesh, the moisture of the material and silt content. When the particles are smaller than the sieve, after repeated contact with the sieve comparison, there will be sifting opportunities. The sifting probability of the particles mainly depends on: the ratio of the projection area and the mesh area on the sieve plane.
The performance of the sieving equipment and process parameters has the impact on the screening process. However, the same material use different equipments will have different screening effects. It mainly depends on the parameters of the process of screening equipment: the movement form of screen surface, the length of the screen surface, the width of the screen surface, the inclination and the shape of the mesh.