Sieves can differ from each other in terms of mesh size, hole shape, material of manufacture, method of manufacture and other parameters. Different types of sieves are suitable for different applications, and choosing the right type can affect the efficiency and accuracy of separation.

Sieves can be made of various materials including metals, plastic, glass and others. Each material has different features and advantages that can be considered when selecting a sieve. For example, metal sieves are often used to separate large and medium sized particles, as they are generally more durable and wear resistant than plastic sieves.

Different types of sieves can be used in different types of separators:

1. Centrifuge sieves. These are used to separate liquids or dust.
2. Sieves for gravity separators. They are used for separation by weight.
3. Sieves for liquid separators. These sieves are used to separate vegetable and animal liquids.
4. Sieves for air separators. These are used for separating dust and other particles as well as filtration.
5. Magnetic separator screens. Used for separation of magnetic materials.
6. Sieves for optical separators. This type of sieve is used to separate materials based on their colour or optical properties.

The types of sieves can vary, depending on the shape of the openings. Some of the most common types include round holes, square holes, and slotted holes. Round holes are often used to separate particles in liquids, while square and slotted holes are used to separate dry materials.

Slotted sieves, as already described, have oblong-shaped cells arranged parallel to each other. The mesh size can be varied depending on the task and separation requirements. For example, sleeper e sieves with large slots can be used for the removal of coarse particles, whereas those with small slots can be used for finer separations.

You can also distinguish types of sieves depending on the method of manufacture, such as stamped, woven, welded, and extrusion sieves.

In general, choosing the right type of sieve is important to achieve the best results in material separation. Therefore, when selecting a sieve, it is important to consider the specifics of the application, the separation accuracy requirements, as well as factors such as particle size, material and viscosity of the liquids being separated, etc..