Product Introduction

Dewatering screens are primarily used for dewatering, desliming, and de‑media removal in material processing. They find applications in sand‑washing operations at sand and gravel plants, coal‑slurry recovery at coal preparation plants, and dry discharge of tailings at mineral processing facilities; accordingly, they are also referred to as sand‑and‑gravel dewatering screens, mining dewatering screens, coal‑slurry dewatering screens, and tailings dewatering screens. The equipment consists mainly of a screen box, an exciter, a support system, and an electric motor. It is driven by dual vibration motors or exciters—typically two standard motors externally coupled to rotate in opposite directions in self‑synchronized fashion—causing the screen deck to perform periodic linear reciprocating motion along a straight line, thereby achieving classification and dewatering.

Performance Advantages

Screen materials: manganese steel woven screens; stainless steel slit screens; perforated screen plates; bar‑type screen plates; polyurethane screen plates; cast‑iron screen plates, and more.

The screen mesh of the Tongxin dewatering screen is made of ultra-high molecular weight polyurethane, which offers impact resistance, low-temperature resistance, wear resistance, chemical corrosion resistance, self-lubrication, and excellent shock-absorbing properties. It exhibits superior impact resistance and wear resistance compared to materials such as polytetrafluoroethylene, nylon, and carbon steel.

Product Features

1. The screening machine is installed horizontally as a whole, but the screen mesh must be mounted at a negative angle to ensure effective forced dewatering.

2. The dewatering screen offers a variety of screen mesh types for customers to choose from, catering to different requirements.

3. The dewatering screen can adjust its vibration frequency at any time via a variable-frequency drive to achieve optimal dewatering performance.

4. The dewatering screen is driven by a self-synchronizing liquid-lubricated vibrator, and its screen frame is constructed from a special noise-reducing material and fastened with high-strength bolts, ensuring reliable operation and reduced noise levels.

5. The feed section of the dewatering screen is equipped with an arc-shaped screen surface to enhance dewatering efficiency, and a feeding hopper is installed to ensure uniform material distribution across the screen surface.

Depending on their intended applications, dewatering screens are classified into the following categories.

1. Coal slime dewatering screen: A specialized screening and dewatering device used in coal preparation plants for desliming, de‑mediumizing, and dewatering. It is capable of recovering coal slime with particle sizes below 9 mm and serves as dedicated equipment for coal slime dewatering. It is widely employed in coal slime recovery, coarse‑particle removal via pressure filtration, fine‑particle filtration, and the dewatering and recovery of other fine materials.

2. Sand and gravel dewatering screen: Its primary function is to dewater washed sand. It is commonly used in wet-process sand production lines as a complementary unit to sand washers, but can also operate independently. After being cleaned by a sand washer, the material passes through the dewatering screen for hydraulic classification, desliming, and fine-sand recovery, achieving an optimal particle-size distribution and reducing the clay content to below 0.7%.

3. High-Frequency Dewatering Screen: This is a screening device that enables the environmentally friendly recovery and reuse of waste materials. It features a large processing capacity and excellent dewatering performance, making it well suited for high-frequency, high‑intensity vibration screening of materials.

4. Tailings Dewatering Screen: Widely used in operations such as dry tailings disposal and tailings dewatering. This machine is particularly well-suited for handling fine‑grained minerals, enabling automated slurry–water separation and dry tailings disposal technologies. It can also be paired with a hydrocyclone to function as a combined dry‑tailings recovery unit, delivering high dewatering efficiency.

Technical Specifications Table

Model number	Feed particle size mm	Processing capacity t/h	Power	Dewatering screen specifications (mm)	Sieve plate material
TS1224	≤10	30-60	2.2kW*2	1200*2400	Polyurethane
TS1230		30-60	2.2kW*2	1200*3000	Polyurethane
TS1530		60-100	3kW*2	1500*3000	Polyurethane
TS1836		100-130	5.5kW*2	1800*3600	Polyurethane

Selection Guidelines

1. Dehydration vibrating screens are available in single-layer and double-layer configurations, with options for left-hand or right-hand mounting.

2. Screen meshes include slit‑type screens, perforated plates, woven meshes, polyurethane plates, and more; they can be customized to meet specific application requirements.

3. To meet screening efficiency requirements, the screen surface may be installed at an inclination angle of 2°–10° when necessary. When placing an order, please specify the screen mesh configuration (woven, perforated, slotted, polyurethane, etc.), mesh aperture size, processing capacity, and the feed particle size.

★ Tongxin Vibration Machinery can design and manufacture dewatering screens in custom models and specifications to meet specific customer requirements.

★ Tongxin Vibration Machinery reserves the right to modify all technical documentation and dimensions. In the event of any discrepancy between the actual product and the illustrations in this document, the actual product shall prevail. Interpretation rights are vested in Tongxin Company.

Our products are widely used in various industries such as mining, metallurgy, carbon new materials, chemical industry, coal, water treatment, sludge treatment, oil sludge (sand) treatment, gas engineering, soil remediation, on-site treatment of construction waste, coal-fired power, building materials, steel, cement, electricity, grain, sand making, commercial concrete, environmental protection, refractory materials, etc

Dewatering screens are primarily used for dewatering, desliming, and de‑media removal of materials. They find applications in sand‑and‑gravel plants for washed sand, coal preparation plants for coal‑slurry recovery, and mineral processing plants for dry discharge of tailings; accordingly, they are also referred to as sand‑and‑gravel dewatering screens, mining dewatering screens, coal‑slurry dewatering screens, and tailings dewatering screens.