Such as building materials, metallurgy, chemical industry and other departments, there are requirements for particle size, final screening device are provided in the supply before the user. The coal processing equipment for sale in uae products inspection screening screening. Because some products have broken in size is larger than the width of discharge opening, so from the broken off size unqualified material on the sieve , returned to the impact crusher in toronto and crushing, sieving, forming a closed loop filtering process.

Selection screen when there was a significant difference between the distribution of component materials in various size fractions of, can be used with components enriched grain containing useful components less grade separated, the former as a rough concentrate, the latter as tailings discarded or send choose don't process, the selection of useful screening components selection effects screening.

This screening is essentially a classification process, also known as the screening. In the use of magnetic separation of concrete in the process is to select the sieving screen. Dehydration or desZenith screening when the material in high shale content or moisture content, can use the screening method for removing part of mud or water, the sieving procedure called sieve dehydration or desZenith screening.