1. PAINPOINT DRIVEN OPENING

Is your coke handling operation plagued by persistent bottlenecks and escalating costs? The screening phase is often a critical failure point, directly impacting downstream quality and overall plant throughput. Common challenges include:

Blinding & Carryover: Moisture and fine coke particles adhere to screen decks, blinding apertures and forcing material to carry over into the wrong product stream. This results in offspec product, increased recrushing loads, and lost revenue.
Excessive Downtime for Maintenance: Traditional screens with complex drive mechanisms or fragile tensioning systems require frequent, lengthy shutdowns for deck changes, bearing replacements, or structural repairs.
High Energy Consumption & Structural Stress: Inefficient vibration transmission and unbalanced forces lead to wasted energy and transfer damaging vibrations to the support structure, accelerating wear on the entire system.
Inconsistent Sizing: Inadequate screening efficiency causes undersized material to contaminate the sized coke product or valuable sized coke to be incorrectly diverted as fines, compromising product integrity and customer specifications.

Are you searching for a robust coke vibration screen engineered to maximize uptime, ensure precise separation, and reduce your total cost of ownership?

2. PRODUCT OVERVIEW

The HeavyDuty Coke Vibration Screen is a linear motion vibrating screen specifically engineered for the rigorous sizing and scalping of metallurgical and petroleum coke. Its design focuses on reliability in highabrasion, highcapacity environments typical in coke handling plants.

Operational Workflow:
1. Feed material from a conveyor is evenly distributed across the full width of the screen's inlet.
2. A synchronized dualshaft vibrator assembly generates a linear throwing motion, propelling coke particles along the screen deck.
3. Particles smaller than the deck aperture size stratify and pass through (undersize), while larger particles travel across the deck to the discharge end (oversize).
4. Separated streams are collected in distinct hoppers or onto separate conveyors for further processing or shipment.

Application Scope: Primary sizing (e.g., separating +50mm from 50mm), scalpandscreen operations ahead of crushers, dedusting (removal of 3mm fines), and drainandrinse screen applications.

Limitations: Not designed for sticky materials without specialized deck treatments. Maximum feed size is limited by deck impact resistance; lump sizes exceeding 300mm typically require a grizzly scalper stage ahead of the screen.

3. CORE FEATURES

Modular Deck System | Technical Basis: Independent, boltin panel construction with polyurethane or rubber media | Operational Benefit: Panels can be replaced individually during scheduled maintenance without removing entire deck frames, reducing changeout time by up to 60%. | ROI Impact: Cuts labor costs for deck maintenance and significantly shortens downtime windows.

DualShaft Synchronized Vibrator | Technical Basis: Two counterrotating shafts with precisionmatched eccentric weights generate a pure linear force | Operational Benefit: Provides consistent material travel velocity and stratification with minimal vertical motion, enhancing screening accuracy. The enclosed oilbath lubrication ensures reliable operation. | ROI Impact: Improved product yield accuracy reduces giveaway and reclaims lost revenue from missized material.

SubResonant Spring Support System | Technical Basis: Lownaturalfrequency coil springs isolate up to 95% of dynamic forces | Operational Benefit: Dramatically reduces transmitted vibrations to the supporting structure, eliminating fatigue damage to feed and discharge chutes as well as the building steelwork. | ROI Impact: Lowers longterm structural maintenance costs and allows installation on elevated structures without costly reinforcement.

AntiBlinding Deck Technology | Technical Basis: Polyurethane or rubber screen panels with tapered apertures and optional balltray or airblast cleaning systems | Operational Benefit: Prevents pegging and blinding by allowing particles to dislodge easily, maintaining consistent open screening area throughout operation. | ROI Impact: Sustains design capacity and screening efficiency over longer periods, preventing throughput drops that delay order fulfillment.

Robust Sideplate & Crossmember Construction | Technical Basis: Finite Element Analysis (FEA) optimized steel fabrications with continuous welds at highstress points | Operational Benefit: Withstands continuous impact from abrasive coke feed without cracking or deformation over a multiyear service life. | ROI Impact: Eliminates unscheduled downtime due to structural failure and defers major capital expenditure on body replacements.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Typical Linear Screen) | Our Coke Vibration Screen Solution | Advantage (% Improvement) |
| : | : | : | : |
| Screening Efficiency (for 6mm separation) | 8590% under optimal conditions | Consistently achieves 9296% efficiency in field tests| +58% more product in spec |
| Deck Panel Replacement Time (Full Deck) | 812 hours with crew of 34 | 35 hours with crew of 23 using modular system| ~60% faster changeover |
| Annual Bearing Service Life (Vibrator) | 1218 months in harsh service| Industry testing demonstrates 2430 month average life| +50% longer service interval |
| Transmitted Dynamic Force to Structure| High; requires reinforced support| Isolated by subresonant spring system| Reduction of up to 95% |
| Power Consumption per Ton Handled| Baseline (100%)| Optimized massandforce balance reduces draw by ~15%| ~15% lower energy cost |

5. TECHNICAL SPECIFICATIONS

Capacity Range: Models available from 500 MTPH to 2,500 MTPH based on material density (~0.8 t/m³ for coke) and separation size.
Screen Decks: Single or double deck configurations. Standard widths from 1.5m to 3m; lengths from 4m to 8m.
Drive Unit: Dualshaft vibrator with IP66rated motors. Total installed power range: 15 kW – 45 kW depending on model size.
Deck Media Options: Hightensile woven wire mesh (standard), polyurethane modular panels (highwear areas), rubber panels (noise reduction).
Construction Materials: Main frame & sideplates: ASTM A36 steel with abrasionresistant liners at feed point. Fasteners are stainless steel or hotdip galvanized.
Operating Environment: Designed for ambient temperatures from 20°C to +50°C. Dusttight enclosures available for motor drives.

6. APPLICATION SCENARIOS

[Integrated Steel Mill – Sinter Plant Feed] Challenge: A major mill experienced rapid blinding on wire mesh decks when screening wet coke breeze (6mm) for sinter feed, causing hourly capacity drops of over 20%. Frequent manual cleaning posed safety risks.

[Solution] Implementation of a doubledeck Coke Vibration Screen fitted with antiblinding polyurethane panels on both decks and an integrated airblast cleaning system.

[Results] Screening efficiency stabilized at 94%. Capacity returned consistently to design rate of 180 MTPH. Manual cleaning interventions were eliminated, enhancing operator safety.

[Petroleum Coke Calcining Plant – Product Sizing] Challenge: The plant needed precise separation of calcined petroleum coke into three fractions (+25mm lump, 25/+8mm nut, 8mm fines). Their existing screens produced excessive amounts of "nearsize" material contaminating each fraction.

[Solution] A tripledeck Coke Vibration Screen was installed with precisely calibrated vibrator stroke & speed for multifraction separation.

[Results] Product purity improved significantly: contamination between fractions reduced by over 75%. This allowed the plant to meet tighter customer specifications for anodegrade coke command premium pricing.

7 COMMERCIAL CONSIDERATIONS

Our Coke Vibration Screens are offered in three primary tiers:

1. Standard Duty Series: For capacities up to ~800 MTPH; ideal for smaller plants or less severe duty cycles.
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