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 (Restrição de Substâncias Perigosas) 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. A questão torna-se: 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?

Visão geral do produto: 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.

Fluxo de Trabalho Operacional:
1. Distribuição de alimentos: Coke material enters via a flared feed box with replaceable wear liners, distributing material across the full screen width
2. Estratificação Primária: Linear vibration at 750–1000 RPM creates material bed fluidization, allowing fines to migrate to the screen deck
3. Classificação de tamanho: Configuração multideck (2–4 decks) separates material into 3–4 fractions simultaneously
4. Descarga de tamanho excessivo: +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

Escopo de aplicação: Suitable for blast furnace coke, coque de fundição, and petroleum coke processing at capacities from 50–400 tons per hour. Não recomendado para materiais que excedam 8% moisture content without heated deck option.

Recursos principais

HeavyDuty Screen Deck Construction | Base Técnica: AR400 abrasionresistant steel with 12mm thickness | Benefício Operacional: Withstands impact from 80mm coke lumps without deformation | Impacto do ROI: Reduces deck replacement frequency from 18 meses para 36 meses, saving $8,000–$12,000 per replacement cycle

RoHSCompliant Electrical System | Base Técnica: CEI 62321 certified components with leadfree solder and halogenfree wiring | Benefício Operacional: Full compliance with EU Directive 2011/65/EU for equipment exported to European markets | Impacto do ROI: Eliminates $3,000–$5,000 per unit compliance testing costs and avoids potential $50,000+ noncompliance penalties

SelfCleaning AntiBlinding Mechanism | Base Técnica: Pneumatic deck rapping system with 50–80 psi air pulses at 30second intervals | Benefício Operacional: Mantém 95%+ open screen area versus 60–70% on standard screens after 3 meses | Impacto do ROI: Increases effective throughput by 25–35% without additional power consumption

Design de deck modular | Base Técnica: Quickrelease tensioning system with wedgelock fasteners | Benefício Operacional: Complete deck change in 4 hours versus 12–16 hours for bolted designs | Impacto do ROI: Reduz o tempo de inatividade de troca em 66%, saving 8–12 hours of production time per change

Dust Containment System | Base Técnica: Enclosed body with negative pressure plenum and cartridge filtration | Benefício Operacional: Meets OSHA PEL of 0.5 mg/m³ for respirable coke dust | Impacto do ROI: Avoids $15,000–$25,000 annual ventilation upgrade costs and potential OSHA fines

Unidade de frequência variável (VFD) Controlar | Base Técnica: 3phase inverter drive with 0–100% speed range | Benefício Operacional: Adjusts vibration amplitude from 3mm to 8mm for different coke grades | Impacto do ROI: Optimizes screening efficiency across varying feed conditions, reducing recirculation loads by 15–20%

CeramicLined Discharge Zones | Base Técnica: 92% alumina ceramic tiles bonded with epoxy | Benefício Operacional: Extends wear life in highimpact areas from 6 meses para 24+ meses | Impacto do ROI: Reduces annual maintenance costs by $4,000–$7,000 per discharge point

Vantagens Competitivas

| Métrica de desempenho | Padrão da Indústria | RoHS Compliant Coke Vibration Screen | Vantagem (% melhoria) |
|||||
| Screening efficiency at 6mm cut point | 85–88% | 93–96% | 8–9% higher recovery |
| Tempo de inatividade não programado (anual) | 12–18% | 4–7% | 55–67% reduction |
| Deck replacement interval | 18 meses | 36 meses | 100% vida útil mais longa |
| Dust emission (mg/m³) | 1.5–2.0 | 0.3–0.5 | 75–80% lower emissions |
| Tempo de mudança (baralho completo) | 12–16 hours | 4 horas | 66–75% faster |
| Consumo de energia (por tonelada) | 0.8–1.2 kWh | 0.5–0.7 kWh | 37–42% lower energy use |
| RoHS compliance certification | Partial/None | Full IEC 62321 | 100% compatível |

Especificações Técnicas

| Parâmetro | Especificação |
|||
| Gama de modelos | CVS48 (48" x 120") to CVS96 (96" x 240") |
| Capacidade | 50–400 tons/hour (depending on cut point and feed size) |
| Faixa de ponto de corte | 3mm to 25mm (único ou multideck) |
| Tipo de vibração | Movimento linear, 30°–45° angle |
| Frequência de vibração | 750–1000 RPM (VFD adjustable) |
| Amplitude | 3–8mm (ajustável) |
| Potência do motor | 2 x 5.5 kW para 2 x 22 kW (dual drive) |
| Fonte de energia | 380–480V, 3fase, 50/60 hertz |
| Deck Material | Aço AR400 (12milímetros), opcional 304 aço inoxidável |
| Revestimentos de desgaste | AR500 or 92% cerâmica de alumina |
| Componentes Elétricos | RoHS compliant per IEC 62321 |
| Temperatura operacional | 20°C a +60°C |
| Peso | 4,500–18,000 kg (dependente do modelo) |
| Dimensões (C x L x A) | 4.5m x 2.5m x 2.8m to 8.0m x 3.5m x 3.5m |

Cenários de aplicação

Blast Furnace Coke Processing at Steel Mill | Desafio: 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 | Solução: Installed CVS72 RoHS Compliant Coke Vibration Screen with 6mm and 25mm decks, VFD optimized at 850 RPM | Resultados: Oversize fines reduced to 2.3%, coke rate decreased by 12 kg/ton hot metal, poupança anual de $480,000 in coke costs

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

Petroleum Coke Processing at Refinery | Desafio: High abrasion from calcined coke (Dureza de Mohs 7.5) caused deck wear every 4 meses, com 40% downtime for replacements | Solução: Implemented CVS48 with AR400 decks and pneumatic antiblinding system | Resultados: Deck life extended to 14 meses, downtime reduced from 18% para 5%, annual maintenance savings of $92,000

Considerações Comerciais

Níveis de preços de equipamentos:

• Modelo Básico (CVS48, 2convés, 50 tph): $85,000–$110,000
• Modelo Padrão (CVS72, 3convés, 200 tph): $145,000–$185,000
• HeavyDuty Model (CVS96, 4convés, 400 tph): $220,000–$280,000

Recursos opcionais:

• 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 peças de reposição (telas, rolamentos, selos): $4,500–$8,000

Pacotes de serviços:

• Garantia Padrão: 24 meses partes, 12 months labor
• Garantia Estendida: 48 meses partes, 24 months labor (+$12,000–$18,000)
• Preventive Maintenance Program: Inspeções trimestrais, annual rebuild (+$4,500/ano)
• Comissionamento & Treinamento: 3day onsite installation support ($6,500)

Opções de financiamento:

• Líquido 30 termos para compradores qualificados
• Locação própria de equipamentos: 36–60 month terms at 4.5–7.5% APR
• Financiamento baseado no desempenho: Pay per ton screened with minimum throughput guarantee

Perguntas frequentes

P: Does the RoHS Compliant Coke Vibration Screen require special electrical infrastructure?
UM: 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.

P: How does RoHS compliance affect screen performance compared to noncompliant equipment?
UM: 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.

P: What is the typical payback period for upgrading to this screen?
UM: Com base em dados de clientes de 12 instalações, 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.

P: Can this screen handle coke with moisture content above 5%?
UM: Standard configuration handles up to 5% moisture without issues. For 5–8% moisture, we recommend the heated deck option (thermostatically controlled to 60°C). Acima 8% umidade, blinding becomes significant and alternative screening methods (por exemplo, flipflow screens) may be more appropriate.

P: What documentation is provided for RoHS compliance verification?
UM: 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.

P: How does the antiblinding system affect maintenance requirements?
UM: 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% reduction in labor.

P: What is the lead time for custom configurations?
UM: Standard models ship in 8–10 weeks. Configurações personalizadas (aço inoxidável, decks aquecidos, special voltage) require 12–16 weeks. Rush orders (6–8 semanas) are available with a 15% prêmio. All units undergo full factory testing before shipment.