RoHS Compliant Coke Vibration Screen: Precision Screening for Metallurgical Coke Processing

The Hidden Costs of NonCompliant Coke Screening

Every ton of undersized coke fines that bypasses your screening system represents lost revenue—typically $15–$25 per ton in reprocessing or disposal fees. Plant managers report that conventional vibrating screens handling metallurgical coke experience 12–18% unscheduled downtime annually due to structural fatigue from abrasive coke particles. Engineering contractors face increasing pressure to specify equipment meeting RoHS (Restriction des substances dangereuses) directives for Europeanbound steel exports, yet many screening solutions still contain restricted materials in their electrical components and weld alloys.

Your operators deal with blinding and pegging issues that reduce effective screening area by 30–40% within six months of operation. La question devient: Can your current screening equipment maintain consistent cutpoint accuracy below 6mm while meeting environmental compliance standards? Or are you accepting reduced throughput and increased maintenance intervals as unavoidable costs of coke processing?

Présentation du produit: RoHS Compliant Coke Vibration Screen

The RoHS Compliant Coke Vibration Screen is a heavyduty linear motion vibratory screener engineered specifically for metallurgical coke classification at 3mm to 25mm cut points. This equipment integrates RoHScompliant electrical components (leadfree solder, cadmiumfree contacts) and corrosionresistant alloys throughout the material contact surfaces.

Flux de travail opérationnel:
1. Distribution d'aliments: Coke material enters via a flared feed box with replaceable wear liners, distributing material across the full screen width
2. Stratification primaire: Linear vibration at 750–1000 RPM creates material bed fluidization, allowing fines to migrate to the screen deck
3. Classement des tailles: Configuration multi-étages (2–4 decks) separates material into 3–4 fractions simultaneously
4. Décharge surdimensionnée: +25mm material exits via end discharge chute with ceramiclined impact zones
5. Fines Collection: 3mm material passes through to collection hopper with dust containment skirt

Champ d'application: Suitable for blast furnace coke, coke de fonderie, and petroleum coke processing at capacities from 50–400 tons per hour. Non recommandé pour les matériaux dépassant 8% moisture content without heated deck option.

Fonctionnalités principales

HeavyDuty Screen Deck Construction | Base technique: AR400 abrasionresistant steel with 12mm thickness | Avantage opérationnel: Withstands impact from 80mm coke lumps without deformation | Impact sur le retour sur investissement: Reduces deck replacement frequency from 18 mois à 36 mois, saving $8,000–$12,000 per replacement cycle

RoHSCompliant Electrical System | Base technique: CEI 62321 certified components with leadfree solder and halogenfree wiring | Avantage opérationnel: Full compliance with EU Directive 2011/65/EU for equipment exported to European markets | Impact sur le retour sur investissement: Eliminates $3,000–$5,000 per unit compliance testing costs and avoids potential $50,000+ noncompliance penalties

SelfCleaning AntiBlinding Mechanism | Base technique: Pneumatic deck rapping system with 50–80 psi air pulses at 30second intervals | Avantage opérationnel: Maintient 95%+ open screen area versus 60–70% on standard screens after 3 mois | Impact sur le retour sur investissement: Increases effective throughput by 25–35% without additional power consumption

Conception de terrasse modulaire | Base technique: Quickrelease tensioning system with wedgelock fasteners | Avantage opérationnel: Changement complet du deck en 4 hours versus 12–16 hours for bolted designs | Impact sur le retour sur investissement: Réduit les temps d'arrêt du changement de 66%, saving 8–12 hours of production time per change

Dust Containment System | Base technique: Enclosed body with negative pressure plenum and cartridge filtration | Avantage opérationnel: Meets OSHA PEL of 0.5 mg/m³ for respirable coke dust | Impact sur le retour sur investissement: Avoids $15,000–$25,000 annual ventilation upgrade costs and potential OSHA fines

Entraînement à fréquence variable (VFD) Contrôle | Base technique: 3phase inverter drive with 0–100% speed range | Avantage opérationnel: Adjusts vibration amplitude from 3mm to 8mm for different coke grades | Impact sur le retour sur investissement: Optimizes screening efficiency across varying feed conditions, reducing recirculation loads by 15–20%

CeramicLined Discharge Zones | Base technique: 92% alumina ceramic tiles bonded with epoxy | Avantage opérationnel: Extends wear life in highimpact areas from 6 mois à 24+ mois | Impact sur le retour sur investissement: Reduces annual maintenance costs by $4,000–$7,000 per discharge point

Avantages compétitifs

| Mesure de performances | Norme de l'industrie | RoHS Compliant Coke Vibration Screen | Avantage (% amélioration) |
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| Screening efficiency at 6mm cut point | 85–88% | 93–96% | 8–9% higher recovery |
| Temps d'arrêt imprévu (annuel) | 12–18% | 4–7% | 55–67% de réduction |
| Deck replacement interval | 18 mois | 36 mois | 100% durée de vie plus longue |
| Dust emission (mg/m³) | 1.5–2.0 | 0.3–0.5 | 75–80% lower emissions |
| Temps de changement (pont complet) | 12–16 hours | 4 heures | 66–75% faster |
| Consommation d'énergie (per ton) | 0.8–1.2 kWh | 0.5–0.7 kWh | 37–42% lower energy use |
| RoHS compliance certification | Partial/None | Full IEC 62321 | 100% conforme |

Spécifications techniques

| Paramètre | Spécification |
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| Gamme de modèles | CVS48 (48" x 120") to CVS96 (96" x 240") |
| Capacité | 50–400 tons/hour (depending on cut point and feed size) |
| Plage de points de coupe | 3mm to 25mm (simple ou multi-étages) |
| Vibration Type | Linear motion, 30°–45° angle |
| Fréquence des vibrations | 750–1000 RPM (VFD adjustable) |
| Amplitude | 3–8mm (réglable) |
| Puissance du moteur | 2 x 5.5 kW à 2 x 22 kW (dual drive) |
| Alimentation | 380–480V, 3phase, 50/60 Hz |
| Deck Material | Acier AR400 (12mm), facultatif 304 acier inoxydable |
| Porter des doublures | AR500 or 92% céramique d'alumine |
| Electrical Components | RoHS compliant per IEC 62321 |
| Température de fonctionnement | 20°C to +60°C |
| Poids | 4,500–18,000 kg (dépendant du modèle) |
| Dimensions (L x l x H) | 4.5m x 2.5m x 2.8m to 8.0m x 3.5m x 3.5m |

Scénarios d'application

Blast Furnace Coke Processing at Steel Mill | Défi: Existing screen consistently produced 8–12% 6mm fines in +25mm oversize, causing furnace permeability issues and increased coke rate by 15 kg/ton hot metal | Solution: Installed CVS72 RoHS Compliant Coke Vibration Screen with 6mm and 25mm decks, VFD optimized at 850 RPM | Résultats: Oversize fines reduced to 2.3%, coke rate decreased by 12 kg/ton hot metal, des économies annuelles de $480,000 in coke costs

Foundry Coke Classification for Export | Défi: Required RoHS compliance for EUbound shipments but existing equipment had leadbased solder in control panels and cadmium in proximity switches | Solution: Deployed CVS60 with full RoHScertified electrical system and ceramiclined discharge | Résultats: Passed EU compliance audit on first inspection, export volume increased by 25%, évité $65,000 in retrofitting costs

Petroleum Coke Processing at Refinery | Défi: High abrasion from calcined coke (Dureté de Mohs 7.5) caused deck wear every 4 mois, avec 40% downtime for replacements | Solution: Implemented CVS48 with AR400 decks and pneumatic antiblinding system | Résultats: Deck life extended to 14 mois, downtime reduced from 18% à 5%, économies annuelles de maintenance de $92,000

Considérations commerciales

Niveaux de tarification des équipements:

• Modèle de base (CVS48, 2pont, 50 tph): $85,000–$110,000
• Modèle standard (CVS72, 3pont, 200 tph): $145,000–$185,000
• HeavyDuty Model (CVS96, 4pont, 400 tph): $220,000–280 000 $

Fonctionnalités facultatives:

• Heated deck system for highmoisture coke (+$12,000–18 000$)
• Stainless steel contact surfaces (+$22,000–35 000$)
• Remote monitoring with vibration sensors (+$8,500)
• Dust collection package with cartridge filters (+$15,000–25 000$)
• Kit de pièces de rechange (écrans, roulements, scellés): $4,500–$8,000

Forfaits de services:

• Garantie standard: 24 mois pièces, 12 mois de travail
• Garantie prolongée: 48 mois pièces, 24 mois de travail (+$12,000–18 000$)
• Preventive Maintenance Program: Inspections trimestrielles, annual rebuild (+$4,500/année)
• Mise en service & Entraînement: 3day onsite installation support ($6,500)

Options de financement:

• Filet 30 conditions pour les acheteurs qualifiés
• Location d'équipement en propre: 36–60 month terms at 4.5–7.5% APR
• Financement basé sur la performance: Pay per ton screened with minimum throughput guarantee

FAQ

Q: Does the RoHS Compliant Coke Vibration Screen require special electrical infrastructure?
UN: Standard 380–480V, 3phase power is sufficient. The VFD system operates on standard industrial power with 50/60 Hz compatibility. No additional transformers or phase converters are needed for most installations.

Q: How does RoHS compliance affect screen performance compared to noncompliant equipment?
UN: Field data shows no performance degradation. The RoHScompliant electrical components (leadfree solder, halogenfree wiring) have equivalent or better thermal and mechanical properties. The primary difference is in material composition, not operational capability.

Q: What is the typical payback period for upgrading to this screen?
UN: Based on client data from 12 installations, average payback is 14–18 months. This accounts for reduced downtime (saving $40,000–$80,000 annually), improved screening efficiency (reducing recirculation by 15–20%), and elimination of compliancerelated costs.

Q: Can this screen handle coke with moisture content above 5%?
UN: Standard configuration handles up to 5% moisture without issues. For 5–8% moisture, we recommend the heated deck option (thermostatically controlled to 60°C). Au-dessus de 8% humidité, blinding becomes significant and alternative screening methods (par ex., flipflow screens) may be more appropriate.

Q: What documentation is provided for RoHS compliance verification?
UN: Each unit ships with a full compliance dossier including: CEI 62321 test reports for all electrical components, material declarations for alloys and coatings, supplier certificates of compliance, and a signed declaration of conformity. This documentation is accepted by EU customs authorities and thirdparty auditors.

Q: How does the antiblinding system affect maintenance requirements?
UN: The pneumatic rapping system requires minimal maintenance—annual replacement of air filter elements ($120) and inspection of solenoid valves. The system operates automatically and does not require operator intervention. Compared to manual cleaning (which requires 2–4 hours per shift), this represents a 90% réduction du travail.

Q: What is the lead time for custom configurations?
UN: Standard models ship in 8–10 weeks. Configurations personnalisées (acier inoxydable, terrasses chauffées, special voltage) require 12–16 weeks. Commandes urgentes (6–8 semaines) sont disponibles avec un 15% prime. All units undergo full factory testing before shipment.