Zenith Dewatering Screens have been operating successfully in a range of industries worldwide for more than 40 years.
The 45 degree sloping back deck section was pioneered on the Zenith Dewatering Screen. It is fitted with slotted apertures across the direction of flow on the screen media to allow incoming slurry to be fed uniformly along the top of this back section and to act as a vibrating drainage panel.
The main deck of the screen slopes upwards and is typically fitted with slotted apertures. At the lowest point of the screen, where the sloping back and main deck meet, a pool of partially dewatered slurry forms. Here solid particles bridge over the apertures and form a partially dewatered cake.
Dewatering Screens For Sale
This cake then acts as a filter bed, ensuring that almost no fine particles pass through. The vibrating action conveys the cake along the screen deck where further dewatering takes place. The cake is discharged over the adjustable weir plate into the product chute.
Vibration is produced by vibrating motors which can be run at different speeds depending on the application. Alternatively geared exciters with an external drive motor can be fitted to the larger screens. Easy adjustment of the amplitude of vibration, deck inclination, as well as the discharge weir plate are features incorporated to suit the process requirements.
A high solids recovery is achieved when the screen underflow is kept in closed circuit with a hydrocyclone and the only solid losses occurring would be the very fine material exiting in the cyclone overflow.
The Zenith Dewatering Screen is well suited and proven for heavy duty applications in the sand and aggregates, mining and minerals processing industries.
Benefits of Dewatering Screens
• Exceptionally high dewatering and draining capacity by virtue of the sloping rear drainage section and the upward inclination of the main deck. This feature reduces initial investment cost in machine and structure.
• The side plates of the machine are fitted with easily replaceable (bolt in) Zenith Premium Rubber wear liners, affording protection to the structure of the machine and ensuring long service life.
• The screen can be fitted with snap-down modular screen deck panels providing long life, easy handling and maintenance with the ability to replace small areas of localised wear.
• Moulded rubber buffers are used on all four support points to isolate the supporting structure from vibrating loads. These provide longer life and less maintenance than coil springs in wet applications.
• High solids recovery when the screen underflow is kept in closed circuit with a hydocyclone.
Applications of Dewatering Screens
• Replacement of filters, rake classifiers, rotary sand dewatering and sand screw equipment in dewatering applications.
• Dewatering of mineral concentrates.
• Tailings dewatering.
• Sand dewatering.
• Coal fines recovery
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