Sieving is a unit operation in which mixture of various sizes of solid particle is separated into two or more fractions by passing over screen. It is applied in industry to determine shape and size of any samples. Sieve analysis has two main objectives.
a. To find out shape of material
b. To find out size of material
In general, there are two types of sieves.
1. Wire woven sieve
2. Perforated sieve