First, the particle size of the material affects the screening efficiency.
The existence of easy sieving, difficult sieving and impurities in the sifted material has the greatest impact on the sieving process. Since the easy sieving material easily passes through the sieve hole, the material retained on the sieve surface is rapidly reduced, thereby greatly reducing the interference to the difficult-to-screen material.
Second, the shape of the material also has a greater impact on the accuracy of the sieve.
If the material shape is irregular, the material screening accuracy will be difficult to guarantee. Generally, multiple screening processes are required for irregular materials. For example, for the first time, the unqualified materials contained in the material are coarsely sieved, and the sieved materials are finely sieved. After multiple screening, the screening precision can be controlled within a certain range.
Third, the movement of materials on the screen surface.
The relative movement between the screen surface and the material is a necessary condition for screening. The movement can be divided into two types, one is the three-dimensional movement of the material on the sieve surface, such as a vibrating screen, and the other is that the particles are mainly parallel to Screen movement. Because the three-dimensional movement of the material on the sieve surface makes the material layer loose and the separation speed is large, and the probability of the material passing through the sieve hole increases, the screening efficiency and the screening accuracy are greatly improved.
Fourth, the influence of the moisture content of the material on the screening effect.
When the same material is sieved by a sieve machine with different sieve holes, the influence of moisture on the screening efficiency is also different. The larger the mesh, the smaller the effect of moisture. Because the larger sieve hole can make the moisture fine particles quickly sift through, which greatly reduces the moisture of the material on the sieve surface and reduces the influence of moisture on the screening process.
