The vibrating screen is one of the indispensable equipment in the sand production line, and the working efficiency of the vibrating screen also affects the production efficiency of the sand production line. As important screening equipment, the screening effect of the vibrating screen will affect the use value of the product. Therefore, it is very important to select the appropriate vibrating screen equipment. The following introduces the factors that need to be considered when choosing a vibrating screen:
- The characteristics of screening materials
When selecting a vibrating screen, the characteristics of the material to be screened should be considered, including the content of the material under the sieve, the content of the difficult-to-sieving particle, the moisture content of the material, the shape and specific gravity of the material, and the content of clay.
- The structure of the vibrating screen
When selecting a vibrating screen, the screen area and number of layers, the shape, size and area rate of the screen hole, as well as the motion mode of the vibrating screen, the vibration frequency and amplitude and other factors should also be considered when selecting the vibrating screen.
The screening efficiency of the vibrating screen is related to the movement form of the screen surface, so the screening efficiency of the fixed screen is low, and the screening efficiency of the moving screen is relatively high.
For the moving screen, the vibration of particles on the screen surface close to the vertical screen whole direction has a high vibration frequency and a better screening effect; if the particles slide in the direction of the screen surface, the screening effect is relatively poor.
- Screening purpose
According to different screening purposes, different types of vibrating screens need to be selected, such as:
If you need to pre-screen the materials, generally use a circular vibrating screen; for grading and screening the crushed materials, use large-scale vibrating screens, probability screens, etc.; for de-intermediation and dehydration of materials, choosing a linear vibrating screen is better; if necessary probability screens are used for desilting and sand cleaning of materials.
- The requirements of the beneficiation process
When choosing a vibrating screen, it is also necessary to consider the processing capacity of the production line, screening method, screening efficiency and the inclination angle of the vibrating screen.
In the actual production of machine-made sand, it is necessary to choose a larger mesh size and effective screening area according to the actual situation and meet the requirements of the machine-made sand product particle size, and choose the appropriate mesh shape and screen surface opening. Non-metallic screen surface with high rate to improve the screening effect and work efficiency of sand and gravel materials.