1. Characteristics of screening materials
When purchasing a vibrating screen, the characteristics of the materials for subsequent screening should be considered in advance, including the particle size requirements of the materials after sieving, the content of difficult-to-screen substances such as impurities in the materials, the moisture content of the materials, and the appearance and shape of the materials. and specific gravity, clay content of easy-to-paste sieves, etc.
2. The performance of vibrating screen
The screening efficiency of the vibrating screen is closely related to 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. Generally speaking, the moving screen can make the material particles to be screened shake in the direction close to the vertical screen hole on the screen surface, improve the vibration frequency of the material, the screening efficiency is high, and the screening effect is better; on the contrary, the fixed vibrating screen makes the The screening efficiency is low and the effect is poor.
3. The purpose of vibrating screen
According to the occasion where the vibrating screen is used and the role it plays on vibration, choose different types of vibrating screen. Usually, circular vibrating screen is used for pre-screening of materials; large circular vibrating screen, probability screen, etc. are used for grading and screening of materials after primary and secondary crushing; linear vibrating screen is used for deintermediation treatment such as dehydration of materials; For mud and sand cleaning work, probability sieves are used.