Linear Vibrating Screen for Coal Processing can grade and separate raw coal, screening out coal of different particle sizes according to requirements for subsequent washing or transportation. The machine uses two vibrating motors running in opposite directions to generate a linear vibration force, causing the material to jump forward on the screen surface, with small particles passing through the screen and large particles being discharged forward.
Depending on the model and screening configuration, the DZSF linear vibrating screen series offers rated processing capacities of up to 32 tons per hour. The equipment can be configured with different screen dimensions, deck arrangements, and screen materials to suit coal particle sizes, feed conditions, and production requirements.
The DZSF linear vibrating screen uses two vibration motors installed on the screen body to generate synchronized excitation forces. These forces produce linear motion, causing the screen box and screen surface to move along a straight trajectory.
When raw coal enters the screen through the feed inlet, the vibration moves the material forward while allowing smaller particles to pass through the screen openings. Oversized coal particles continue moving toward the discharge outlet, while undersized particles fall through the screen surface. In multi-deck configurations, different screen openings separate coal into several particle size fractions during one screening process.
In actual production, coal screening is not an optional step. Unscreened raw coal contains a mixture of particle sizes, with large pieces and pulverized coal mixed together, which can affect combustion and washing efficiency. Common on-site problems include uneven particle size distribution, with some particles being too large to enter subsequent equipment, and excessive powder causing blockages. Another issue is high moisture content, which causes coal to clump together and adhere to the screen, making it difficult to pass through. The Linear Vibrating Screen for Coal Processing uses continuous vibration to constantly agitate the material, giving smaller particles more opportunities to contact the screen openings and thus separate them. For coal with high moisture content, the amplitude and screen angle can be adjusted to create a loose state on the screen surface, reducing adhesion.
From a structural perspective, the Linear Vibrating Screen for Coal Processing is characterized by several details. The screen surface maintains a stable trajectory during vibration, ensuring uniform material distribution and reducing screening errors caused by localized accumulation. The 1-6 layer screen design allows for multi-stage grading in a single run, suitable for scenarios with specific particle size requirements. In terms of throughput, by lengthening the screen surface or increasing its width, continuous feeding can be supported without frequent shutdowns. Daily maintenance is also relatively simple; the external vibrating motor facilitates easy replacement when wear occurs. To address the issue of high dust levels at coal mine sites, the equipment can be equipped with a closed hood and a dust collection system connected to the discharge port to reduce dust spillage.
The following table presents the standard DZSF linear vibrating screen models and their main technical specifications. With rated capacities of up to 32 t/h, these models provide different screening areas and power configurations for various coal screening requirements.
| Model | Layer |
Screening Area (mm) |
Mesh Size (mesh) |
Particle Size (mm) |
Capacity (t/h) |
Power (kw) |
Vibration Direction Angle (°) |
Screen Inclination (°) |
Dual Amplitude (mm) |
| DZSF-520 | 1-6 layers | 500*2000 | 2-400 | 0.074-10 | ≤3 | 0.37×2 | 45-60 | 0-7 | 3-4.5 |
| DZSF-525 | 500*2500 | ≤5 | 0.37×2 | ||||||
| DZSF-612 | 600*1200 | ≤8 | 0.37×2 | ||||||
| DZSF-1020 | 1000*2000 | ≤12 | 0.75×2 | ||||||
| DZSF-1025 | 1000*2500 | ≤16 | 0.75×2 | ||||||
| DZSF-1030 | 1000*3000 | ≤20 | 1.1×2 | ||||||
| DZSF-1224 | 1200*2400 | ≤23 | 1.5×2 | ||||||
| DZSF-1525 | 1500*2500 | ≤28 | 1.5×2 | ||||||
| DZSF-1530 | 1500*3000 | ≤32 | 2.2×2 |
Coal screening requirements vary with feed size, moisture content, separation targets, and operating conditions. The DZSF linear vibrating screen can be configured with suitable screen openings, deck arrangements, and screen materials to match different coal processing tasks.
Screen Opening Selection: Screen opening size should be selected according to the required coal particle size and separation accuracy. Different openings can be used for coarse coal separation, fine coal classification, and the removal of undersized particles.
Single-Deck and Multi-Deck Configurations: A single-deck linear vibrating screen is suitable for one-stage classification or the separation of oversized and undersized coal. Multi-deck configurations allow coal to be separated into several size fractions in one screening process.
Screen Material Selection: Screen material should be selected based on coal abrasiveness, moisture conditions, and maintenance requirements. Different screen media can be considered to balance wear resistance, screening efficiency, and service life.
In the coal industry, Linear Vibrating Screen for Coal Processing can be used in multiple stages. After raw coal enters the crushing system, it often needs to be classified by particle size. At this stage, the linear vibrating screen can separate materials of the appropriate particle size, reducing the burden on subsequent equipment. In coal washing plants, screening equipment is used in conjunction with jigs and flotation systems to process coal of different particle sizes, helping to improve the quality of the washed coal. In the dewatering stage, the screen surface can be combined with high-frequency vibration to allow moisture to be discharged from the screen holes, resulting in a product with lower moisture content.
In a coal screening application, the customer needed to separate raw coal containing fine particles and sticky impurities. The existing screening process experienced screen blockage during operation, affecting material flow and screening stability.
To address these conditions, a linear vibrating screen was selected for coal classification. The equipment configuration included a double-deck screening structure and polyurethane screen panels. The vibration system was adjusted to support stable material movement across the screen surface.During operation, the screening equipment helped separate coal into different particle size fractions. The screen configuration also addressed the customer's concerns about material accumulation and screen blockage.
Selecting a linear vibrating screen for coal processing requires more than matching the machine's rated capacity to the required output. Feed particle size, coal moisture, target separation size, and the number of final product fractions all affect the equipment configuration. Before choosing a model, consider the following factors.
Required Processing Capacity: Calculate the actual amount of coal that needs to be screened per hour. Select a model with a rated capacity suitable for the required throughput, allowing for variations in feed rate and material conditions.
Feed Size and Target Separation: Identify the maximum feed particle size and the required separation size. These values help determine the screen opening and screening area.
Coal Moisture and Material Conditions: Wet coal and clay-containing materials may accumulate on the screen surface and cause blinding. Consider these conditions when selecting screen media and screening configurations.
Number of Screening Decks: A single-deck screen can separate coal into two size fractions, while multi-deck equipment can produce several fractions in one operation. Choose the deck arrangement according to the required product sizes.
Installation and Operating Requirements: Check the available installation space, feed and discharge positions, operating hours, and maintenance access before confirming the machine model.
Xinxiang Dahan is a manufacturer of linear vibrating screens for coal processing and other bulk material screening applications. We supply DZSF series linear vibrating screens in different sizes and configurations to meet varying production requirements.
Equipment customization is available according to coal particle size, moisture content, required screening capacity, and installation conditions. Options include screen dimensions, number of screening decks, screen opening sizes, screen materials, motor configuration, and feed and discharge arrangements.
Before production, our team can evaluate the material characteristics and screening requirements to recommend a suitable equipment configuration. This helps buyers select a linear vibrating screen that fits their coal processing line and operating conditions.
Q:What is the capacity of a linear vibrating screen for coal processing?
A:The processing capacity depends on the DZSF model and screening conditions, with the listed models offering rated capacities of up to 32 tons per hour.
Q:Can a linear vibrating screen handle wet coal?
A:Yes. By adjusting the vibration amplitude and selecting polyurethane screen mesh, the machine can effectively process coal with high moisture content and reduce screen clogging.
Q:What screen materials are available for coal processing?
A:Common screen materials include carbon steel, stainless steel, and polyurethane. Polyurethane screens are especially suitable for abrasive and high-moisture coal.
Q:How many screening layers can be installed?
A:The linear vibrating screen supports 1 to 6 screening layers, allowing multiple particle size classifications in a single operation.
Q:Which industries use linear vibrating screens for coal processing?
A:These machines are widely used in coal mines, coal washing plants, coking plants, and thermal power plants.
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