ROTARY SCREENING MACHINE
A Rotary screen, also known as a TROMMEL SCREEN, is a mechanical screening machine used to separate materials, mainly in the mineral and solid-waste processing industries. It consists of a perforated cylindrical drum that is normally elevated at an angle at the feed end. Physical size separation is achieved as the feed material spirals down the rotating drum, where the undersized material smaller than the screen apertures passes through the screen, while the oversized material exits at the other end of the drum
Rotary screens can be used in a variety of applications such as classification of solid waste and recovery of valuable minerals from raw materials. Rotary Screen come in many designs such as concentric screens, series or parallel arrangement and each component has a few configurations. However depending on the application required, Rotary Screens have several advantages and limitations over other screening processes such as vibrating screens, grizzly screens, roller screens, curved screens and gyratory screen separators.
Working principal of SHIVA TECHNO FAB’S Rotary Screen:
It selects composts of variable size fractions to get rid of contaminants and incomplete composted residues, forming end products with a variety of uses. Besides this, the food industries use trommel screens to sort dry food of different sizes and shapes. The classification process will help to achieve the desired mass or heat transfer rate and avoid under or over-processing. It also screens tiny food such as peas and nuts that are strong enough to resist the rotational force of the drum
The screen’s aperture comes in either square or round shape which is determined by many Operating factors such as:
- The required dimension of the undersized product.
- The aperture area. Round aperture contributes to a smaller area than square-shaped one.
- The magnitude of the agitation of product.
- Cleanup of drum.
