Industrial Coal Banana Screen
The Coal Banana Screen is engineered to solve these exact challenges of capacity limits, frequent blinding, and high maintenance. Delivering up to 200% the throughput of conventional linear screens, the Banana Screen utilizes advanced equal-thickness screening technology. It is purpose-built to eliminate the toughest wear, structural fatigue, and deck-blinding issues in heavy-duty coal sizing—maximizing your uptime and processing efficiency.
Traditional Linear Screen vs. High-Capacity Banana Sieve
| Comparison Dimension | Traditional Linear Screen | High‑Capacity Banana Sieve |
|---|---|---|
| Bed Depth Control | Heavy material accumulation at the feed end, slow stratification and sluggish material travel. | Equal‑thickness material flow: multi‑angle deck design (up to 5 varying slopes). Material flows at uniform thickness, allowing fine particles to pass through the mesh instantly. |
| Material Velocity | Constant slow speed across entire deck, prone to overloading and blinding. | High‑Capacity Banana Sieve |
| Screening Efficiency | Low to moderate, typically 65%–75%. | Equal‑thickness material flow: multi‑angle deck design (up to 5 varying slopes). Material flows at uniform thickness, allowing fine particles to pass through the mesh instantly. |
| Throughput Capacity | Limited by bed thickness, prone to surging and carryover of fines into product stream. | High‑Capacity Banana Sieve |
| Plant Footprint | Requires multiple units running in parallel, consuming large floor space and infrastructure costs. | Equal‑thickness material flow: multi‑angle deck design (up to 5 varying slopes). Material flows at uniform thickness, allowing fine particles to pass through the mesh instantly. |
To help you understand why upgrading to a banana screen is a game-changer for your coal preparation plant, here is a detailed technical comparison of how equal-thickness technology outperforms conventional linear screens:
Heavy-Duty Components That Power Your Production
Zero-Welded Side Plates (Structural Integrity)
The screen side plates are crafted from a single piece of steel, cold-bent without a single weld. The entire structure is secured exclusively using high-strength Huck Bolts (Lockbolts). This completely eliminates residual welding stress, ensuring the screen frame will never crack—even under continuous 6G vibrational acceleration.
Advanced Box-Type Exciters (Powerful Vibration Control)
Equipped with our highly precise, proprietary (or optionally branded) box-type exciters. Built with heavy-duty spherical roller bearings, they operate at a low noise level (below 85 dB) and boast an extended service life exceeding 20,000 hours.
Full-Surface Wear Protection:To guarantee survival in high-abrasion and corrosive coal processing environments, every critical surface in contact with coal or slurry is heavily shielded:
Thermal-Sprayed Polyurea: Applied to beam crossmembers for seamless corrosion and moisture protection.
Polyurethane Wear Liners: Bolt-on, impact-absorbing protection in heavy impact areas.
Alumina Ceramic Tiles: Bonded in high-velocity slurry zones and feed/discharge boxes for ultimate abrasion resistance.
Choose the Right Configuration for Your Coal Process
To maximize throughput and separation efficiency across every stage of the coal preparation process, we offer application-specific deck configurations tailored to your exact needs:
Coarse Screening & Scalping: Our focus is on high impact resistance and heavy-load durability, utilizing punched steel plates or thick Polyurethane (PU) panels with 50–100 mm openings.
Desliming & Media Recovery: We prioritize high fluid-handling capacity and minimal blinding by equipping the deck with high-open-area stainless steel wedge wire or fine PU slotted panels featuring 0.5–2 mm openings.
Fine Coal Dewatering: The system is engineered to maximize water drainage and significantly reduce surface moisture through optimized G-force and screen deck angles, ensuring optimal product dryness and process efficiency.
The Retrofit Advantage: Seamless Brand Replacement
Looking to replace your existing brand-name screens without the premium markup or structural headaches? We specialize in high-performance retrofits that seamlessly integrate into your current processing circuit.
100% Drop-In Replacement: We offer precise 1:1 custom engineering. Our replacement screens are designed to match your existing footprint exactly, requiring zero modifications to your structural steel foundations, feed chutes, or discharge hoppers.
Cost-Effective Spare Parts: We mass-produce high-durability spare parts fully compatible with mainstream international screen brands, including box exciters, polyurethane screen decks, tension springs, and more.
60% Shorter Lead Times: Avoid costly downtime with our rapid-ship inventory.
40% Cost Savings: Get OEM-quality or better wear life at a fraction of the original importer's price.
Technical FAQ: Maximizing Your Banana Screen Performance
Q1: How do you adjust the vibration amplitude and angle for different coal types?
A: The linear motion angle and G-force can be adjusted by changing the eccentric counterweights on the box exciters. For sticky wet coal, we recommend a higher take-off angle and increased amplitude to throw the material off the deck.
Q2: What is the average lifespan of your polyurethane deck panels under abrasive ROM coal?
A: Typically, our custom-formulated PU panels last 8 to 12 months in continuous 24/7 coal grading, which is 3 to 5 times longer than traditional steel woven wire mesh.
Q3: Does Dahan perform finite element analysis (FEA) on the screen body?
A: Yes. Every Dahan Banana Screen undergoes rigorous FEA static and dynamic stress analysis during the design phase to guarantee that there are no natural resonance frequencies close to the operating frequency.
Stop the Downtime—Let’s Optimize Your Prep Plant
| Field | Your Details |
|---|---|
| Name | Enter your full name |
| Corporate Email | Enter your company email address |
| Current Screen Brand (Optional) | e.g., Schenck, Ludowici, Conn‑Weld, Metso |
| Target Capacity (t/h) | e.g., 500 t/h, 1000 t/h |
| Upload Datasheet / Drawing | [ Choose File ] Attach your current screen drawing or process datasheet |
Tired of screen failures and lost production? Drop us your process parameters (moisture, particle size distribution, and target t/h), and our engineering team will provide a 3D GA drawing and quote within 2 working days.
Submit your details today and take the first step toward lowering your OPEX while boosting your plant's recovery rates.
