The vibrating screen is one of the indispensable equipment in the coal mine production line. The working efficiency of the vibrating screen also affects the production efficiency of the coal mine production line. As an important screening equipment, the screening effect of the vibrating screen will affect the use value of the product. Therefore, it is very important to choose the appropriate vibrating screen equipment. Here are some factors to consider when choosing a vibrating screen:
First, the characteristics of screening materials
When selecting a vibrating screen, the characteristics of the materials to be screened should be considered, including the content of the material under the sieve, the content of the difficult-to-screen particles, the moisture content of the material, the shape and specific gravity of the material, and the content of clay and other characteristics.
Second, the structure of the vibrating screen
When selecting a vibrating screen, factors such as the screen area, the number of layers, the shape, size and area ratio of the screen hole, as well as the movement mode, vibration frequency and amplitude of the vibrating screen should also be considered.
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 the particles on the screen surface is close to the direction of the vertical screen holes, the vibration frequency is high, and the screening effect is better; if the particles slide in the direction of the screen surface, the screening effect is relatively poor.
Third, screening purpose
According to different screening purposes, different types of vibrating screen need to be selected, such as:
If the material needs to be pre-screened, a circular vibrating screen is generally used; large-scale vibrating screen, probability screen, etc. are used for grading and screening of crushed materials; linear vibrating screen is better for de-intermediation and dehydration treatment of materials; if necessary The material is desilted and sand cleaned, and the probability screen is used.
Fourth, mineral processing requirements
When choosing a vibrating screen, it is also necessary to consider the processing capacity of the production line, the screening method, the screening efficiency and the inclination angle of the vibrating screen.
In the actual production of the coal mining industry, it is necessary to select the larger sieve size and effective screening area as much as possible according to the actual situation and meet the requirements of the particle size of the manufactured sand products, and select the appropriate sieve shape and sieve surface opening. High-efficiency non-metal screen surface to improve the screening effect and work efficiency of sand and gravel materials.