Sieving
Sieving is a method of separating particles based on their size. It involves passing a mixture of particles through a sieve, which is a device with uniform holes of different sizes. The smaller particles pass through the holes, while the larger particles are retained on the sieve.

Usage
- Sieving is commonly used in various industries such as agriculture, construction, pharmaceuticals, and food processing.
- In agriculture, sieving is used to separate grains of different sizes for planting or processing.
- In construction, sieving is used to separate fine sand from coarse sand or gravel for making concrete.
- In pharmaceuticals, sieving is used to separate particles of different sizes in medications.
- In food processing, sieving is used to remove impurities or foreign particles from food products.

Process
- The mixture of particles is placed on top of the sieve.
- The sieve is then shaken or agitated to allow the smaller particles to pass through the holes.
- The larger particles that are retained on the sieve are then collected and further processed or discarded.

Benefits
- Sieving helps in achieving uniform particle size distribution.
- It helps in separating impurities or foreign particles from the desired product.
- Sieving is a cost-effective and simple method for particle separation.

Conclusion
In conclusion, sieving is a widely used method for separating particles based on size. It is a simple and effective technique that finds applications in various industries for processing materials and products.