portable trommel screen
Capacity: 1-100TPH
Feeding: <6mm
Feeding Density: 0-50%
Products display
Overview
Trommel screens are one of the oldest screening devices, their structures are very simple but yet with high sorting accuracy and efficiency. So they are still widely used in China and many other countries.
Trommels can be made to deliver several sized products by using trommel screens in series from finest to coarsest such as the one shown; or using concentric trommels with the coarsest mesh being innermost.
Trommels remain widely used in some screening duties, including aggregate screening plants and the screening of mill discharge streams. They are also used for wet-scrubbing ores, such as Bauxite, alluvial gold, diamond ores and etc.
https://youtu.be/f2DH0tgfMzwhttps://www.youtube.com/watch?v=khpOk\_8zgM4
Trommels are installed on a small angle to the horizontal or use a series of internal baffles to transport material along with the cylinder.
When the feeding material enters the roller trommel, due to the tilt and rotation of the trommel, the material on the screen surface is turned and rolled, so that the qualified material (under-screen product) is discharged through the outlet at the bottom of the rear end of the roller, and the unqualified material (upper-screen product) is discharged through the discharge port at the rear of the trommel.
Trommels can handle material from 55 mm down to 6 mm, and even smaller sizes can be handled under wet screening conditions.
Although trommels are typically cheaper, vibration-free, and mechanically robust, they generally have lower capacities than vibrating screens since only part of the screen surface is in use at any one time.
Trommels remain widely and often work with the screening of mill discharge streams. Tumbling mill (AG, SAG, rod, and ball mills) discharge streams usually pass through a trommel screen attached to the mill outlet to prevent grinding media scats from reaching subsequent processing equipment, and the case of AG/SAG mills, to extract pebbles to send to crushing stage.
specifications
Parameter Structure Main parts Features Parameter
Structure
The drum body of the drum screen is generally divided into several sections, depending on the specific situation, the screen holes are arranged from small to large, and the screen hole diameter on each section is the same.
In order to improve the sorting accuracy and avoid the situation where small particles are screened out in the large-aperture screen section, the feeding materials must be fully turned in the trommel screen, and the movement speed of those materials cannot be too fast.
Generally, the inner wall of the trommel is equipped with a flex plate. Its role is to raise the feeding particles so that particles with different sizes get as many opportunities as possible to contact the sieve hole.
If the hole diameter meets the requirements, the particles can pass through the sieve and get sorted.
Also, the trommel screen generally has a relatively strict installation angle, usually, this angle is 5°. Of course, under actual circumstances, it can be adjusted as needed.
Main parts
Features
- The screen hole is not easy to be blocked, the operation is stable, and the operation produced noise is low.
- Simple structure and easy to maintain.
- The sieving cylinder can be closed, which is easy to collect dust.
- A higher screening efficiency and longer service life can achieved by adapting a special screen.
- High screening efficiency.
- Good working environment.
- Low equipment noise.
The entire screening is designed in a sealed dust cover, which eliminates the flying dust during the screening process, thereby improving the working environment.
The entire screening is designed in a sealed dust cover, which eliminates the flying dust during the screening process, thereby improving the working environment.
During the operation of the equipment, the noise generated by the material and the rotating screen is completely isolated by the sealed dust cover, so that the noise cannot be transmitted to the outside of the equipment, thereby reducing the noise of the equipment.
