1. PAINPOINT DRIVEN OPENING

Is your coke screening operation facing persistent, costly bottlenecks? For plant managers and engineering contractors, inefficient particle separation directly impacts throughput, product quality, and the bottom line. Common challenges include:

Excessive Fines Carryover: Inconsistent screening allows undersized coke fines into the product stream, degrading quality for blast furnace or foundry customers and risking contract penalties.
Blinding & Downtime: Moisture and sticky particles rapidly blind screen decks, requiring frequent, laborintensive stoppages for manual cleaning. This unplanned downtime can cut effective operating hours by 1525%.
High Maintenance Costs: The abrasive nature of metallurgical coke accelerates wear on screen panels, decks, and exciters, leading to high parts replacement costs and maintenance labor.
Inefficient Capacity Utilization: Vibrators with insufficient power or poor motion fail to fully stratify material, causing good product to report to the oversize stream or limiting the total throughput of the screening station.
Environmental & Safety Compliance: Dust emission at transfer points from inadequate sealing and concerns over equipment material safety (e.g., heavy metals) add regulatory complexity.

Are you searching for a robust screening solution that directly addresses these issues with proven reliability and a clear return on investment?

2. PRODUCT OVERVIEW

The ROHS Compliant Coke Vibration Screen is a heavyduty industrial screening machine engineered for the precise size classification of metallurgical coke. It separates crushed coke into defined fractions (e.g., blast furnace nut coke, foundry coke) while ensuring all materials in construction comply with the Restriction of Hazardous Substances (ROHS) directive.

Operational Workflow:
1. Controlled Feed: Crushed coke is uniformly distributed onto the fully sealed feed box of the vibrating screen.
2. HighEfficiency Stratification: A powerful dualvibrator system imparts a linear or elliptical motion, aggressively conveying material while stratifying particles by size through multiple deck levels.
3. Precise Separation: Sized particles pass through precisely sized screen panel apertures on each deck.
4. Discrete Discharge: Correctly sized fractions are discharged from separate outlets into designated chutes for downstream processing or stockpiling.

Application Scope: Primary and secondary sizing of metallurgical coke in steel plants, coke production facilities, and foundries. Ideal for handling dry or slightly moist materials.

Limitations: Not designed as a dewatering screen for slurry applications or for extreme sticky claybound materials without specialized screen media.

3. CORE FEATURES

ROHSCompliant Material Suite | Technical Basis: Elimination of restricted substances (Pb, Cd, Hg, etc.) in electrical components, seals, and coatings | Operational Benefit: Guarantees global market accessibility and simplifies endoflife equipment disposal | ROI Impact: Eliminates risk of noncompliance fines and facilitates smoother export/import logistics.

Advanced AntiBlinding System | Technical Basis: Combination of highGforce vibration and optional balltray or ultrasonic deck cleaners | Operational Benefit: Maintains nearoriginal screening efficiency by preventing aperture blockage | ROI Impact: Increases uptime by up to 20% and reduces manual cleaning labor costs.

DustTight Modular Sealing | Technical Basis: Multilayer rubber seals with quickclamp access panels at all transfer points | Operational Benefit: Contains dust at feed, discharge, and between decks, improving plant air quality | ROI Impact: Reduces housekeeping costs and minimizes dust collection system load.

HeavyDuty Deck Construction | Technical Basis: Reinforced side plates with tensioned modular polyurethane or rubbercoated steel panels | Operational Benefit: Withstands abrasive impact of coke, extending panel service life by 3050% over standard wire mesh | ROI Impact: Lowers consumable parts cost and reduces changeout frequency.

Dual CounterRotating Exciters | Technical Basis: Two synchronized vibrator motors generating a linear force vector for consistent material travel | Operational Benefit: Provides reliable, adjustable amplitude for optimal stratification without complex mechanical drives | ROI Impact: Ensures stable capacity rating achievement with lower maintenance than single eccentric shaft designs.

HuckBolt® Frame Assembly | Technical Basis: Highshear strength lock bolt technology used in all structural connections | Operational Benefit: Creates a rigid frame that resists loosening under constant vibration stress | ROI Impact: Eliminates frame weld failures and reduces longterm structural maintenance to near zero.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Typical Coke Screen) | ROHS Compliant Coke Vibration Screen Solution | Advantage (% Improvement) |
| : | : | : | : |
| Screening Efficiency (Accuracy) | 8590% on primary sizing duty| Sustained 9295% efficiency via antiblinding tech| +58% more product in correct grade |
| Panel Service Life (Abrasive Wear)69 months with wire mesh|1215 months with proprietary polyurethane blend| +50100% longer life|
| Mean Time Between Failure (Structural)| Frequent bolt retorquing; weld checks annually| Huckbolt design requires no retorquing; 5year warranty on frame| ~80% reduction in structural upkeep|
| Downtime for Cleaning| 23 hours per shift for severe blinding|<1 hour per shift with active antiblinding systems| Up to 60% reduction in lost time|
| Regulatory Material Compliance| May contain noncompliant components in wiring/seals| Full component traceability & ROHS compliance documentation| Mitigates 100% of ROHSrelated market access risk|

5. TECHNICAL SPECIFICATIONS

Model Range & Capacity: Sizes from 1.2m x 3.0m to 2.4m x 6.0m; throughput from 150 to 1200 metric tons per hour depending on aperture size and feed gradation.
Power Requirements: Dual vibrator motors from 2 x 7.5 kW to 2 x 30 kW (400V/50Hz or other standards). Total installed power includes motor starters with overload protection.
Material Specifications: Main frame carbon steel ST37; Side plates abrasionresistant steel; Screen Decks tensioned system with polyurethane/AR steel panels; Seals oilresistant rubber; Vibrators IP66 rated with continuous duty bearings.
Physical Dimensions & Weight: Varies by model (e.g., Model CCVS1848 approx.: L=6m,W=3m,H=2m; Weight ~8,500 kg).
Environmental Operating Range: Ambient temperature: 20°C to +45°C; Designed for dustladen atmospheres up to IP65 enclosure standards on electricals.

6. APPLICATION SCENARIOS

[Steel Plant Blast Furnace Feed] Challenge: A major integrated steel mill experienced high fines content (>10%) in their nut coke fraction (1025mm), reducing permeability in the blast furnace burden.Solution: Installation of a twodeck ROHS Compliant Coke Vibration Screen fitted with slotted polyurethane panels.Results: Fines carryover reduced to <5%, improving furnace efficiency by an estimated 1%. Screen panel replacement interval extended from every eight months to fourteen months.

[Merchant Coke Producer] Challenge: Frequent blinding on secondary screens during humid weather caused daily downtime for rodding out decks.Solution: Retrofit of existing screens with this model's highGforce exciter system combined with indirect balltray cleaners.Results: Blindingrelated stoppages decreased by over 70%, allowing consistent achievement of rated plant capacity regardless of atmospheric conditions.

7. COMMERCIAL CONSIDERATIONS

Pricing Tiers: Equipment pricing is structured based on machine size (deck area), drive power configuration (standard vs highG), choice of screen media type (standard wire cloth vs premium polyurethane), inclusion/exclusion of antiblinding accessories.
Standard Duty Tier: For controlledfeed secondary screening applications.
HeavyDuty Tier: For primary sizing roles involving high impact loads at the feed point.
Customized Tier: For integration into existing structures or special material handling requirements.

Optional Features & Packages:
Weather covers
Integrated spray bars for dust suppression
Advanced condition monitoring sensors
Variable frequency drives
Spare parts starter kits

Service Packages: Available as annual support contracts covering scheduled inspections vibrator regreasing critical spare parts holding

Financing Options Flexible capital equipment financing can be arranged including leaseto own structures which preserve working capital

FAQ

Q Are your screens compatible with our existing foundation structure?
A Our engineering team provides detailed interface drawings including load data dynamic forces We can design adaptor frames if necessary ensuring compatibility without major civil modifications

Q What is the expected impact on our overall plant energy consumption?
A Field data shows these screens typically operate within industrystandard specific energy consumption bands The efficiency gains from reduced downtime often result in net positive energy utilization per ton processed

Q How does ROHS compliance affect lead times component availability?
A We maintain certified inventory chains All key electrical mechanical components are sourced from suppliers guaranteeing full documentation Lead times align standard heavy machinery production schedules

Q Can you provide performance guarantees?
A Yes we offer guaranteed minimum capacity throughput based agreed feed material characteristics Guarantees also cover structural integrity specific wear part life under normal operating conditions

Q What does typical installation commissioning involve?
A We provide comprehensive erection manuals supervised installation available Our commissioning process includes static dynamic alignment checks vibration analysis ensure optimal longterm operation