Subject: Addressing Downtime and Contamination in Coke Screening Operations

1. PAINPOINT DRIVEN OPENING

Every ton of coke that bypasses your screening system represents lost revenue and potential downstream penalties. Plant managers face three persistent challenges: blinding of screen media due to moisture and fines, structural fatigue from highimpact feed, and inconsistent cutpoint accuracy that leads to customer rejections. Industry data indicates that unscheduled downtime for screen deck replacement can cost a midsized coking facility upwards of $15,000 per hour in lost production. Additionally, a 2% increase in fines contamination can trigger price deductions of $5–$8 per ton from steel mill buyers.

Are your current screens handling the abrasive nature of metallurgical coke without excessive wear? Can your equipment maintain a consistent 25mm or 50mm separation under 24/7 operation? The solution requires a machine built specifically for the highimpact, highwear environment of coke processing.

2. PRODUCT OVERVIEW

The Chinese Coke Vibration Screen Private Label Manufacturer offers a heavyduty, linearmotion vibrating screen engineered for the classification of metallurgical coke, foundry coke, and petroleum coke. This equipment operates on a dualshaft exciter system to generate a straightline stroke, propelling material across the deck for efficient stratification.

Operational Workflow:
1. Feed Introduction: Coke (0–80mm) enters the screen via a chute, with a feed box designed to absorb initial impact.
2. Stratification: Linear vibration causes larger particles to rise to the top layer while fines migrate to the deck surface.
3. Separation: Material passes over polyurethane or perforated steel panels. Undersize falls through; oversize travels to the discharge end.
4. Discharge: Two to three product streams (e.g., +50mm, 2550mm, 25mm) are directed to separate conveyors.

Application Scope: Ideal for dry screening of blast furnace coke, nut coke, and coke breeze. Limitations: Not recommended for wet screening applications where moisture exceeds 12%, as this can cause rapid blinding.

3. CORE FEATURES

HighStroke Exciter Assembly | Technical Basis: Dualshaft, counterrotating gearbox with eccentric weights | Operational Benefit: Generates a 10–12mm stroke amplitude, preventing material stratification failure common in coke screening | ROI Impact: Reduces recirculation loads by 15%, lowering energy consumption per ton processed.

AbrasionResistant Deck Design | Technical Basis: 12mm thick polyurethane panels with 65 Shore A hardness, or AR400 steel plate options | Operational Benefit: Withstands the sharp, angular edges of coke particles, extending screen media life by 300% compared to standard rubber | ROI Impact: Decreases annual media replacement costs by approximately $8,000 per deck.

QuickRelease Tensioning System | Technical Basis: Hydraulic or manual wedge tensioners on side plates | Operational Benefit: Allows a twoman crew to replace a screen panel in under 30 minutes, versus 2 hours on bolted systems | ROI Impact: Recovers 1.5 hours of production time per changeout, valued at over $20,000 annually.

DustTight Sealing | Technical Basis: Compressionsealed side plates with labyrinth seals on bearings | Operational Benefit: Prevents fugitive coke dust from entering bearing housings, a primary cause of premature failure | ROI Impact: Extends bearing service life from 6 months to 18 months, saving $2,500 per bearing replacement.

Variable Angle Adjustment | Technical Basis: Adjustable support springs allowing deck angle from 15° to 25° | Operational Benefit: Enables operators to finetune material retention time for varying coke moisture levels | ROI Impact: Improves screening efficiency by 5–8% during seasonal moisture changes.

Modular Deck Frame | Technical Basis: Bolttogether, segmented side plates | Operational Benefit: Allows for partial deck replacement without removing the entire screen from the structure | ROI Impact: Reduces structural modification costs by 40% when upgrading to different media types.

HeavyDuty Cross Members | Technical Basis: 150mm x 150mm hollow structural sections with wear liners | Operational Benefit: Resists bending and cracking from the impact of 50kg coke lumps falling from a 1.5meter height | ROI Impact: Eliminates structural weld repairs, which average $3,000 per incident.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Generic Screen) | Coke Vibration Screen Solution | Advantage (% improvement) |
| : | : | : | : |
| Screening Efficiency (25mm cut) | 8588% | 9497% | +10% |
| Screen Media Life (Polyurethane) | 46 months | 1218 months | +200% |
| Bearing Replacement Interval | 6 months | 1824 months | +200% |
| Changeout Time (Single Deck) | 2 hours | 30 minutes | 75% |
| Noise Level at 1 Meter | 95 dB(A) | 85 dB(A) | 10 dB(A) |
| Structural Warranty Period | 1 year | 3 years | +200% |

5. TECHNICAL SPECIFICATIONS

| Parameter | Specification (Model CVS2448) | Specification (Model CVS3660) |
| : | : | : |
| Capacity (Coke, 25mm cut) | 150–200 TPH | 300–400 TPH |
| Screen Area | 6 m² (24 sq ft) | 12 m² (36 sq ft) |
| Number of Decks | 2 (optional 3) | 2 (optional 3) |
| Vibration Frequency | 750–900 RPM | 750–900 RPM |
| Stroke Amplitude | 10–12 mm | 10–12 mm |
| Motor Power | 2 x 11 kW (15 HP) | 2 x 22 kW (30 HP) |
| Material of Construction | S355J2+N Steel / AR400 Liners | S355J2+N Steel / AR400 Liners |
| Screen Media | Polyurethane (65A) or Perforated Steel | Polyurethane (65A) or Perforated Steel |
| Operating Weight | 8,500 kg | 14,000 kg |
| Operating Temperature Range | 20°C to +80°C | 20°C to +80°C |

6. APPLICATION SCENARIOS

Steel Mill Blast Furnace Coke Screening | Challenge: A steel producer in Hebei Province was experiencing 8% fines (10mm) carryover into their blast furnace feed, causing permeability issues and increasing coke rate by 5 kg per ton of hot metal. | Solution: Installation of a dualdeck Coke Vibration Screen with 25mm and 10mm polyurethane panels. | Results: Fines carryover reduced to 2.5%. Blast furnace coke rate decreased by 4 kg/THM, saving the plant $1.2 million annually in coke costs.

Foundry Coke Processing Plant | Challenge: A foundry coke producer needed to produce a tight 50mm x 80mm specification for cupola furnaces, but their existing screen was blinding due to 8% moisture content. | Solution: Implementation of a singledeck screen with a 15° deck angle and 12mm stroke to maintain material flow. | Results: Screening efficiency improved from 82% to 96%. Customer rejection rate dropped from 5% to 0.5%, securing a longterm supply contract.

Petroleum Coke Classification | Challenge: A calcined petroleum coke facility required separation of +6mm and 6mm fractions for anode production, but standard screens suffered rapid wear from the abrasive, angular particles. | Solution: Customized screen with AR400 steel deck plates and a 10mm stroke. | Results: Screen media life increased from 3 months to 14 months. Maintenance downtime decreased by 70%.

7. COMMERCIAL CONSIDERATIONS

Equipment Pricing Tiers (FOB Shanghai Port):

• Standard Model (CVS2448): $45,000 – $55,000 (2deck, polyurethane media, 15 HP motors)
• HeavyDuty Model (CVS3660): $78,000 – $95,000 (3deck, AR400 liners, 30 HP motors, dust enclosure)
• Custom Engineered Model: $110,000+ (for specific feed chute integration, special alloy construction, or explosionproof motors)

Optional Features:

• Automated Lubrication System: $4,500 (reduces manual greasing frequency to quarterly intervals)
• Vibration Monitoring Kit: $6,200 (provides realtime bearing and stroke data for predictive maintenance)
• Spare Parts Package (2year supply): $12,000 (includes bearings, seals, and 4 sets of screen panels)

Service Packages:

• Basic (1year): Remote technical support + 1 onsite commissioning visit.
• Premium (3year): Includes Basic + quarterly inspection reports + 10% discount on spare parts.
• Performance Guarantee: Contractual guarantee of 93% screening efficiency at specified capacity, with financial penalties if not met.

Financing Options:

• 30% Down Payment + 70% L/C at Sight (Standard)
• LeasetoOwn: 36month term with 5% buyout at end.
• Deferred Payment: 50% down, 50% after 90day performance acceptance.

8. FAQ

Q: Can this screen handle the high impact of direct feed from a crusher?
A: Yes. The feed box is reinforced with 20mm thick AR400 wear plates, and the cross members are designed to withstand a drop height of up to 2 meters. We recommend a rubber impact panel at the feed point for additional protection.

Q: What is the typical lead time for a custom private label order?
A: Standard models ship in 45–60 days. Customengineered units with specific paint colors or branding require 75–90 days from design approval.

Q: How does this screen perform with highmoisture coke (1012%)?
A: The linear motion and adjustable deck angle help manage moisture. However, for consistent performance above 10% moisture, we recommend specifying a heated deck option or a dewatering screen design.

Q: What is the warranty on the vibrator assembly?
A: The gearbox and exciter assembly carry a 24month warranty against manufacturing defects. Bearings are covered for 12 months. Structural components have a 36month warranty against cracking.

Q: Can I use my existing screen media with this machine?
A: The frame is designed for modular polyurethane panels (305mm x 305mm) or perforated steel plates. Adapter kits are available for some common OEM patterns, but we recommend using our media for optimal tensioning and life.

Q: What are the power requirements for installation?
A: Standard models require 380V/50Hz/3phase. We can supply 460V/60Hz or 690V transformers as an option. The motor starter panel is included.

Q: How do you handle aftersales support for international buyers?
A: We provide a dedicated project manager for each order. Remote diagnostics are available via video call. For critical failures, we can dispatch a service engineer within 72 hours to most industrial regions.