Fine Sand Recovery Linear Vibrating Screen, Clean Coal & Middlings De-sliming Screen, High-Frequency Vibrating Dewatering Screen

High-Frequency Vibrating Dewatering Screen I. Product Overview The high-frequency vibrating dewatering screen is an efficient screening device specially designed for dewatering, desliming, and de-medium of fine-grained materials. It is widely used in processes such as sand and gravel washing plants, coal slime recovery in coal preparation plants, and tailings dry stacking in mineral processing plants. This equipment adopts dual-motor self-synchronizing drive technology. Through high-frequency and low-amplitude vibration, the material quickly forms a dense filter layer on the screen surface, achieving efficient solid-liquid separation. The moisture content of the final product can be reduced to below 8%. II. Working Principle The equipment is driven by two vibration motors (or flange-type exciters) via belt couplings, operating in synchronous reverse rotation. The centrifugal forces generated by the two sets of eccentric masses are superimposed along the vibration direction, while the reverse forces cancel each other out, forming a single exciting force along the vibration direction, causing the screen box to perform reciprocating linear motion. After the material is evenly fed onto the screen surface from the feed box, part of the free water is quickly removed in the curved section. Then the material forms an increasingly thick filter layer on the screen surface, preventing fine particles from passing through. The water that fails to pass through forms a water pool on top of the filter layer. Under the continuous high-frequency low-amplitude vibration, the filter layer is vibrated more and more densely, forcing the water to be removed. Finally, a filter cake-like dry material is discharged at the discharge port. III. Structural Features - Screen Design: Combined curved and straight V-shaped structure, screen surface installed at a negative inclination angle (usually -5° to -3°), facilitating drainage and preventing water overflow from the discharge port. - Screen Mesh Material: Options include polyurethane screen panels, stainless steel welded stepped screen panels, or high-strength composite screens. High open area (≥33%), strong wear resistance, service life up to 6 months or more. - Overall Structure: Screen frame connected with high-strength bolts, high rigidity and strength; compact structure, small size, light weight, supports seat-type or suspension mounting. IV. Technical Advantages | Advantage Item | Description | | --- | --- | | High Dewatering Efficiency | High-frequency vibration (25~50Hz) with low amplitude (1~5mm) ensures remarkable dewatering effect and low product moisture. | | Large Processing Capacity | High throughput per unit area; effectively recovers fine sand above 0.075mm with recovery rate exceeding 90%. | | Low Operating Noise | Self-synchronizing technology and optimized structure design ensure smooth operation and low noise. | | Easy Maintenance | Modular screen mesh design for easy replacement; no sudden spring breakage risk, low maintenance cost. | | Energy Saving & Environmental Protection | Compared with traditional drying process, it can reduce about 30% of drying energy consumption and lower operating costs. | V. Application Fields - Sand & Aggregate: Washing sand dewatering, fine sand recovery, solving fine sand loss in wet processing lines. - Coal Industry: Coal slime dewatering recovery, coarse coal slime pre-dewatering and desliming. - Mining & Mineral Processing: Metal/non-metal tailings dry stacking, concentrate dewatering. - Environmental Engineering: Municipal sludge dewatering, mud purification treatment. - Other Industries: Solid-liquid separation scenarios in sugar, salt, paper, food processing, etc.