Vibrating screen is very widely used, and there are many kinds of vibrating screens, and their uses are also very wide, for example, classification and dewatering of large and medium-sized materials, dewatering of coal slurry and froth coal, dewatering of non-media fine sand, mainly used in sand and gravel plants, cement plants, coal processing plants, builders, chemical industry, etc.

Factors affecting coal screening efficiency.
Sieving test can determine the yield and various quality indexes such as ash, moisture, sulfur, heat and so on of each particle size level in coal, and the sieving test information is the main reference information when determining the sieving level and its quality index. However, the sieve test values are only theoretical values, and the actual sieve grade yield and quality are different from this. This is not only the inconsistency between the sieved coal sample and the actual coal particle size characteristics, but also the problem of screening efficiency.
Different industries have different particle sizes of coal screened by vibrating screens, and if the screening strength is different it will seriously affect the production of some sectors and also cause waste. Vibrating screen can operate under harsh conditions. During the operation of the vibrating screen, the coal in the vibrating screen is thrown up and down on the screen mesh under the drive of the vibrating exciter, and  these materials are graded on the screen mesh.
 Factors affecting the screening coal mine are as follows.
(i) the moisture of the coal, (ii) the particle size composition of the coal, (iii) the shape of the screen plate and screen holes, (iv) the length and width of the screen surface (v) the inclination of the screen surface (vi) the amplitude and frequency vii) the throwing angle (viii) the handling capacity.