Mechanical sieving is a process used to separate particles of different sizes by passing them through a mesh or screen. This method is commonly employed in various industries, including construction and food processing, to ensure that materials meet specific size requirements. The mesh size determines which particles can pass through and which are retained. The equipment used for mechanical sieving can vary from simple hand-held sieves to large industrial machines. The effectiveness of the process depends on factors such as the size of the openings in the sieve and the characteristics of the material being sorted, such as granules, powders, or aggregates.