TS Dewatering Screen Machine

Introduction

Dewatering screen (also known as a dewatering vibrating screen or drainage screen) is a high-performance linear motion screening machine engineered specifically for solid-liquid separation and moisture reduction across mining, aggregate processing, and industrial applications. It is designed to efficiently remove excess water from washed materials such as sand, coal, ores, and tailings, delivering a drier product ready for stockpiling, transport, or further processing.

By combining linear vibration technology with specially configured screen decks, dewatering screens achieve rapid water drainage while retaining fine particles that would otherwise be lost. The screen bed itself acts as a filter medium, capturing particles finer than the screen openings as material builds up on the deck surface.

With no moving parts in the screening area, robust construction, and wear-resistant media options, dewatering screens offer a durable, low-maintenance solution for continuous, high-capacity dewatering operations.

Working Principle

The dewatering process relies on a combination of vibration, gravity drainage, and filter bed formation:

• Slurry Feed: The wet material (slurry or washed aggregate) is fed onto the screen deck at the feed end.
• Rapid Drainage: Water begins to drain through the screen openings immediately upon contact.
• Linear Vibration Motion: Dual counter-rotating vibratory motors generate a linear motion that conveys solids forward toward the discharge end, while water continues to pass through the screen media.
• Filter Bed Formation: As dewatering progresses, a bed of solids accumulates on the screen surface. This bed acts as a filter medium, retaining fine particles—even those smaller than the screen apertures—which would otherwise be lost in the underflow.
• Discharge: The dewatered product exits the discharge end with significantly reduced moisture content, while the water and fine particles pass through the screen and are collected beneath.
• Critical to Performance: The discharge weir and controlled bed depth are essential for achieving low residual moisture. The screen design ensures that the material bed remains thick enough to act as an effective filter.

Applications

Dewatering screens are widely used across industries to reduce moisture content and recover fine materials.

• Sand & Aggregate Processing-Dewatering washed sand, gravel, and crushed stone; reducing moisture from screw washer discharge (from ~20% to as low as 7–10%)
• Mining & Mineral Processing-Tailings dewatering, ore beneficiation, coal slurry dewatering, desliming
• Coal Washing-Dewatering coal slurry to improve fuel quality and reduce disposal costs
• Industrial & Chemical-Dewatering of sludge, slurry, and wastewater treatment solids
• Recycling-Drying crushed concrete, glass, and recycled aggregates

Typical capacity range: 5 t/h to over 500 t/h, depending on model and material characteristics.

Features

Superior Moisture Reduction
Reduces moisture content in discharged material to as low as 7–10% (when fed by a screw washer) or 11–18% for direct applications.
Significantly reduces energy consumption in subsequent drying processes.

High-Efficiency Linear Vibration
Dual-motor synchronized vibration technology creates intense linear motion with acceleration forces of 8–10× gravity, ensuring rapid water removal and precise screening.
Negative-angle screen installation (0° to -5°) further enhances dewatering performance.

Robust & Durable Construction
Heavy-duty steel frame with HUCK rivet-assembled side panels and polyurethane-coated beams for corrosion and stress resistance.
Screen Media: Available in polyurethane (high wear resistance, anti-clogging) or stainless steel; modular panels for easy replacement.
Bolt-on wear liners and rubber-lined discharge chutes extend service life.

Modular & Customisable Design
Available in single-deck or multi-deck configurations.
Adjustable screen aperture (0.25–50 mm), amplitude (0–2 mm), and incline angle (0° to 5°) to suit different materials and applications.
Optional divider decks allow simultaneous separation of multiple product fractions.

Low Maintenance & Energy Efficiency
No moving parts in the screening area minimises wear points.
Low-power motors (2×2.2 kW to 2×30 kW) and optimised vibration systems achieve high throughput with minimal energy consumption.

Specifications

• Screen Area:1.4 – 13 m² (custom sizes available)
• Screen Deck:1 or 2 decks
• Screen Aperture:0.25 – 50 mm
• Incline Angle:0° to 5° (standard: 5° upward at discharge)
• Capacity:5 – 500 t/h (depending on model and material)
• Motor Power:0.75 kW × 2 up to 30 kW × 2
• Residual Moisture:As low as 7–10% (post-screw) or 11–18% (direct feed)
• Screen Media Options:Polyurethane (modular), stainless steel, welded slit panels, woven wire mesh
• Drive Types:Unbalanced motors, magnetic vibrators, exciters, or circular vibrators.

Why Choose Our Dewatering Screens?

Our dewatering screens combine proven engineering with modern innovations to deliver superior moisture reduction, extended wear life, and reliable operation in the most demanding environments.

Key Differentiators:

• Optimised vibration geometry for maximum dewatering efficiency and minimal product loss.
• Durable screen media options—polyurethane or stainless steel—matched to your specific application and abrasion requirements.
• Customisable configurations: screen area, deck count, aperture, and incline angle tailored to your process.
• Comprehensive support: process sizing, installation guidance, and aftermarket spares availability.
• Contact our process engineering team today to specify the right dewatering screen for your application.