1. PAINPOINT DRIVEN OPENING

Is your coke handling operation plagued by persistent bottlenecks and escalating maintenance costs? For plant managers overseeing coke screening, common challenges directly impact the bottom line. Excessive fines carryover due to inefficient separation can degrade product quality and reduce saleable yield. Frequent screen cloth changes, caused by premature wear from abrasive coke, lead to hours of unplanned downtime and high consumables expenditure. Vibration isolation failures transfer destructive forces to support structures, creating longterm asset integrity concerns. Moreover, inconsistent feed rates and moisture content can overwhelm standard screens, causing blinding and a significant drop in throughput. Are you facing rising operational costs, unpredictable availability, and an inability to meet stringent sizing specifications consistently? The reliability of your entire downstream process hinges on the performance of this critical node.

2. PRODUCT OVERVIEW

The Coke Vibration Screen is a heavyduty, linear motion screening machine engineered for the precise size classification of metallurgical coke and similar abrasive materials in bulk handling plants. Its core function is to separate crushed coke into defined fractions (e.g., blast furnace coke, nut coke) while removing fines.

Operational Workflow:
1. Feed & Distribution: Crushed coke is evenly distributed across the full width of the screen via a robust feed box.
2. Stratification & Separation: Dual counterrotating exciters generate a linear vibrating motion, stratifying material and conveying it along the deck while precise sizing occurs through the screen meshes.
3. Fraction Discharge: Correctly sized oversize material discharges from the front of the deck; onsize material passes through to lower decks or chutes; fines are separated and discharged separately.

Application Scope: Primary and secondary screening of metallurgical coke, recrusher feed screening, coke breeze separation.
Limitations: Not designed for sticky, highly cohesive materials without specialized deck systems. Maximum lump size is constrained by feed chute and deck aperture design.

3. CORE FEATURES

HeavyDuty Deck Assembly | Technical Basis: Modular, bolttensioned panels with reinforced frames | Operational Benefit: Enables rapid, panelbypanel cloth changeovers, reducing downtime for maintenance by up to 40% compared to fulldeck replacement systems | ROI Impact: Lower labor costs per changeout and increased plant availability.

Dual CounterRotating Exciters | Technical Basis: Synchronized eccentric shafts generating a linear throw; forcelimited design | Operational Benefit: Provides consistent material travel speed without bouncing, ensuring accurate sizing. Isolated motor drives simplify maintenance | ROI Impact: Predictable throughput and improved product consistency reduce qualityrelated penalties.

Advanced Isolation System | Technical Basis: Multistage rubberinshear or coil spring isolators calculated for dynamic load | Operational Benefit: Absorbs over 95% of dynamic forces, preventing transmission to the supporting structure and minimizing structural fatigue | ROI Impact: Eliminates costly structural reinforcement needs and extends the service life of surrounding infrastructure.

AbrasionResistant Lining Package | Technical Basis: Wear plates at feed points and side liners made from AR400 steel or equivalent | Operational Benefit: Protects critical deck frame components from direct abrasive impact, extending structural life beyond standard designs | ROI Impact: Defers major capital refurbishment cycles by years, lowering total cost of ownership.

DustEncapsulated Design | Technical Basis: Gasketed covers and sealed dust hoods with integrated connection points | Operational Benefit: Contains particulate matter at transfer points, supporting compliance with plant environmental standards | ROI Impact: Reduces housekeeping labor and mitigates risk of regulatory noncompliance.

PLCReady Vibration Monitoring | Technical Basis: Integrated sensor pads for continuous monitoring of vibration amplitude and bearing temperature trends | Operational Benefit: Enables predictive maintenance scheduling by identifying deviations from baseline performance before failure occurs | ROI Impact Prevents catastrophic exciter failures and associated extended downtime.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard | Our Coke Vibration Screen Solution | Advantage (% improvement) |
|||||
| Screen Cloth Change Time | Full deck bolt removal (68 hours) | Modular panel replacement (34 hours) | 50% faster |
| Bearing Life (L10) | 12,000 15,000 hours | 20,000+ hours | ~33% longer |
| Force Transmission | Up to 30% transmitted to structure | 96% | >2 percentage points higher |
| Fines Carryover Reduction Baseline Patented deck sequencing & optimized throw Field data shows up to 15% reduction in undersize contamination |

5. TECHNICAL SPECIFICATIONS

Capacity Range: Modeldependent; standard designs from 500 to 2,500 metric tons per hour.
Screen Decks: Single, double, or tripledeck configurations.
Deck Size: Widths from 1.5m to 3m; lengths from 4m to 8m.
Drive Power: Dual motor exciters ranging from 2 x 11 kW to 2 x 45 kW.
Vibration Frequency: Fixed or variable frequency options between 7501000 RPM.
Construction Materials: Main frame carbon steel ST37; Contact parts & liners AR400 steel; Screen decks stainless steel or hotdip galvanized frames.
Operating Temperature Range: 20°C to +80°C (ambient).
Protection Rating: IP65 for drive motors.

6. APPLICATION SCENARIOS

[Integrated Steel Plant] Challenge: A major steelworks experienced high fines content in blast furnacegrade coke (>8%), impacting furnace permeability and efficiency. Their existing screens were prone to blinding in highhumidity conditions.

[Solution]: Implementation of a tripledeck Coke Vibration Screen with nonblinding balltray decks on the lower sections for fine separation.

[Results]: Fines carryover was reduced to under 5%, contributing to a documented 1.5% reduction in specific coke rate at the furnace within one quarter.

[Coke Calcining Facility] Challenge: Frequent breakdowns of screen exciters led to an average of 15 hours/month unplanned downtime for nut coke screening operations.

[Solution]: Replacement with two heavyduty Coke Vibration Screens featuring forcelimited exciters with condition monitoring ports.

[Results]: Unplanned screeningrelated downtime was reduced by over 90% in the first year (<1 hour/month). Predictive alerts allowed bearing changes during planned outages.

7. COMMERCIAL CONSIDERATIONS

Our Coke Vibration Screens are offered in three primary tiers:
Standard Duty: For consistent feed rates and lower annual tonnage applications.
HeavyDuty (Most Common): Includes all core features listed above for mainstream industrial operations.
SevereDuty: Enhanced features such as ceramic linings at all wear points or explosionproof motors for specialized environments.

Optional features include variable frequency drives for process flexibility , stainless steel construction for select components in corrosive atmospheres , automated lubrication systems ,and custom discharge hooding .

We provide comprehensive service packages ranging from annual inspections with detailed health reports through multiyear partsandlabor performance agreements . Financing options including leasing structures are available through our partners .

8.FAQ

Q1 : Can your screen be retrofitted into my existing layout?
A1 : Yes . We provide dimensional drawings early in the process . Our engineering team specializes in designing adaptor chutes , supports ,and transition pieces .

Q2 : How does your solution handle variations in feed moisture?
A2 : Our deck technology includes options like balltray decks that impart an additional tapping motion . This has been proven effective against blinding caused by surface moisture .

Q3 : What is your supply lead time?
A3 : Lead times vary based on model complexity . Standard heavyduty models typically have a lead time between X weeks . We maintain critical spare parts inventory .

Q4 : Do you provide performance guarantees?
A4 : Yes . We guarantee mechanical performance including structural integrity . Screening efficiency guarantees are provided based on agreedupon test conditions .

Q5 : What is included in your commissioning support?
A5 : We provide supervision during installation , mechanical alignment checks , startup procedure guidance ,and initial operator training as part of our standard commissioning protocol .

Q6 : How do you ensure spare parts availability longterm?
A6 : As an OEM factory we maintain full manufacturing drawings . We commit via contract stocking plans ensuring availability even years after installation .

Q7 : Can you assist with optimizing my entire screening circuit?
A7 Absolutely Our application engineers can review upstream crusher settings downstream conveyor speeds overall circuit capacity