Import Coke Vibration Screen Procurement: Technical Guide for Industrial Buyers

Your Screening Operation Is Losing Profit Every Hour

Coke screening operations face three persistent challenges that directly impact your bottom line. Primeiro, blinding and clogging of screen decks reduces effective separation area by 3045%, forcing frequent manual cleaning that costs $2,500$4,000 per shutdown hour. Segundo, screen deck breakage from impact loading of 5080mm coke particles leads to replacement cycles of 68 semanas, with each deck replacement costing $8,000$15,000 mais 1216 horas de inatividade. Terceiro, dimensionamento inconsistente do produto causes penalties of $38 per ton when oversize material exceeds customer specifications, or lost revenue when undersize material is discarded unnecessarily.

Your current screening equipment—whether conventional circular motion screens or outdated linear motion units—was likely designed for aggregate processing, not the specific challenges of metallurgical coke. Can your existing system maintain <5% oversize and <3% undersize at 200 toneladas por hora? Are you replacing screen panels every 45 dias? If these questions raise concerns, this procurement guide addresses the technical specifications required for import coke vibration screen solutions.

Visão geral do produto: Peneira vibratória de coque resistente

The import coke vibration screen is a linear motion, dualshaft vibrating screen engineered specifically for hightemperature (80120°C), abrasive coke classification. Unlike standard aggregate screens, this equipment incorporates wearresistant polyurethane or AR400 steel decks, highGforce exciters (4.56.0 G), and selfcleaning mechanisms to maintain throughput.

Fluxo de Trabalho Operacional:
1. Distribuição de alimentos: Coke at 80120°C enters via chute, distributed across full screen width by a stepped feed box to prevent material segregation
2. Estratificação Primária: Linear motion at 850950 RPM separates material into layers, with fines migrating to bottom deck within 23 segundos
3. Classificação de tamanho: Material passes through 23 deck levels (normalmente 50 mm, 25milímetros, 10aberturas mm) com 8592% eficiência de triagem
4. Descarga de tamanho excessivo: +50mm material exits via top deck spout at 1525° angle for crusher feed
5. Coleção subdimensionada: 10mm fines collected in bottom hopper, with optional dust collection connection

Escopo de aplicação: Metallurgical coke (fundição, alto-forno, coque de nozes), coque de petróleo, coque calcinado
Limitações: Not suitable for wet screening (>8% moisture causes binding), maximum feed temperature 150°C, requires minimum 15° incline for material flow

Recursos principais

HighG Exciter System | Base Técnica: Dualshaft counterrotating mechanism generating linear motion at 4.56.0 G | Benefício Operacional: Material moves at 0.250.35 m/s across deck, preventing bed depth exceeding 3x aperture size | Impacto do ROI: 1822% higher throughput vs. conventional screens at same deck area

SelfCleaning Ball Tray Assembly | Base Técnica: Rubber balls (2540mm de diâmetro) in perforated trays beneath each deck, activated by screen vibration | Benefício Operacional: Continuous clearing of 815mm coke fines from apertures, reduzindo a cegueira por 6075% | Impacto do ROI: Elimina 23 manual cleaning shifts per week, salvando $18,000$25,000 annually in labor

Modular Polyurethane Deck System | Base Técnica: Injectionmolded polyurethane panels (shore hardness 85A95A) with steel insert frames, bolted to cross members | Benefício Operacional: Panel replacement in 45 minutos versus. 46 hours for welded wire cloth; 34x longer wear life | Impacto do ROI: Annual deck replacement cost reduced 5565%, de $42,000 para $15,000$18,000

TemperatureResistant Bearing Housing | Base Técnica: Doublerow spherical roller bearings with PTFE seals and external cooling fins, rated for 150°C continuous operation | Benefício Operacional: Bearing life exceeds 25,000 hours at 80°C operating temperature vs. 8,000 hours for standard units | Impacto do ROI: Eliminates one bearing replacement per year, salvando $3,500$5,000 in parts and 8 horas de inatividade

Variable Stroke Adjustment | Base Técnica: Adjustable eccentric weights on exciter shafts, stroke range 814mm in 1mm increments | Benefício Operacional: Optimize stroke for different coke grades (foundry coke requires 1012mm, nut coke 810mm) | Impacto do ROI: Screening efficiency improves 812% when stroke matched to material characteristics

Dust Containment System | Base Técnica: Bolted enclosure with rubber gaskets at all access points, negative pressure connection port (200300 Pai) | Benefício Operacional: Reduces airborne coke dust by 9095%, meeting OSHA PEL of 0.5 mg/m³ | Impacto do ROI: Evita $15,000$25,000 in annual dust control fines and ventilation system upgrades

QuickRelease Tensioning Mechanism | Base Técnica: Hydraulic or mechanical wedge system tensioning screen panels to 3.54.0 kN/m | Benefício Operacional: Deck change time reduced from 8 horas para 2.5 hours for full deck replacement | Impacto do ROI: Reduces annual downtime by 4050 horas, valued at $12,000$20,000 em produção perdida

Vantagens Competitivas

| Métrica de desempenho | Padrão da Indústria (Tela Convencional) | Import Coke Vibration Screen | Vantagem (% Melhoria) |
|||||
| Screening efficiency (no 200 TPH) | 7278% | 8893% | 1822% mais alto |
| Deck replacement frequency | Todo 68 semanas | Todo 2024 semanas | 6067% vida mais longa |
| Tempo médio entre falhas | 1,200 horas | 3,500 horas | 192% melhoria |
| Consumo de energia por tonelada | 0.450.55 kWh/t | 0.320.40 kWh/t | 2228% redução |
| Nível de ruído em 1 medidor | 9298 dB(UM) | 8287 dB(UM) | 1011 redução de dB |
| Maintenance hours per month | 2432 horas | 812 horas | 6267% redução |
| Product oversize (+50milímetros) | 812% | 35% | 5562% redução |
| Product undersize (10milímetros) | 58% | 23% | 5562% redução |

Especificações Técnicas

Gama de modelos: CVS1836 (1.8m x 3,6m) to CVS3060 (3.0m x 6.0m)

Classificações de capacidade:

• CVS1836: 80120 TPH (coque, 50mm top deck)
• CVS2448: 150200 TPH (coque, 50mm top deck)
• CVS3060: 250350 TPH (coque, 50mm top deck)

Requisitos de energia:

• Motor: 1545 kW per exciter (dual motor configuration)
• Tensão: 380V/50Hz ou 460V/60Hz (3fase)
• Starting method: Stardelta or soft starter (recomendado)

Especificações de materiais:

• Deck material: Poliuretano (shore 90A) or AR400 steel (optional for +80°C)
• Placas laterais: Aço ASTM A36, 812espessura mm
• Membros cruzados: ASTM A500 Grade B, 46mm wall
• Exciter shafts: 4140 liga de aço, heat treated to 2832 CDH

Dimensões Físicas (CVS2448 reference):

• Comprimento: 5,200 milímetros (including feed and discharge chutes)
• Largura: 2,800 milímetros (including motor platforms)
• Altura: 2,400 milímetros (incluindo estrutura base)
• Peso: 8,5009,200 kg (seco, without media)

Faixa operacional ambiental:

• Temperatura ambiente: 10°C to 55°C
• Temperatura do material: 0°C to 150°C (contínuo)
• Umidade: 095% sem condensação
• Exposição à poeira: Até 50 mg/m³ (with dust containment)



Cenários de aplicação



Blast Furnace Coke Screening | Desafio: A steel mill in Ohio was experiencing 12% tamanho grande (+75milímetros) in their blast furnace coke feed, causing burden permeability issues and 3% increase in coke rate (costing $1.2M annually). Their existing 20yearold screen had 68% efficiency and required weekly deck replacement. | Solução: Installed CVS2448 import coke vibration screen with 50mm and 25mm decks, 10mm stroke, 5.2 G acceleration. Integrated ball tray cleaning system and dust enclosure. | Resultados: Tamanho extra reduzido para 4.2%, undersize to 2.8%. Screening efficiency improved to 91%. Deck replacement interval extended to 22 semanas. Annual coke rate savings of $980,000, mais $45,000 in reduced maintenance costs.

Foundry Coke Processing | Desafio: A foundry coke producer in Pennsylvania needed to produce 95% within 2575mm specification for cupola furnaces. Their existing screen produced 15% multas (25milímetros) requiring reprocessing, adding $8.50/ton cost. | Solução: Deployed CVS1836 with 75mm and 25mm decks, 12mm stroke, 5.5 G. Added variable frequency drive to adjust speed for different coke grades. | Resultados: Geração de multas reduzida para 5.8%, salvando $380,000 annually in reprocessing costs. Consistência do produto melhorada, allowing $2.50/ton premium pricing. Período de retorno: 7 meses.

Petroleum Coke Classification | Desafio: A refinery in Texas was processing 180 TPH of calcined petroleum coke with 8% teor de umidade, causing severe blinding on their existing screens. Downtime for cleaning averaged 6 horas por semana. | Solução: Installed CVS3060 with heated deck option (steam coils maintaining 60°C deck temperature) and specialized slotted apertures (12mm x 50 mm) to handle sticky material. | Resultados: Cegueira reduzida em 85%. Weekly cleaning downtime eliminated. A produtividade aumentou para 220 TPH. Annual production gain of 15,000 toneladas, valued at $1.1M.

Considerações Comerciais

Níveis de preços de equipamentos (FOB port of origin, USD):

• CVS1836 (80120 TPH): $85,000$110,000
• CVS2448 (150200 TPH): $135,000$175,000
• CVS3060 (250350 TPH): $195,000$250,000

Recursos opcionais (pricing added to base):

• Heated deck system (steam or electric): $18,000$25,000
• Variable frequency drive package: $12,000$18,000
• Sistema de monitoramento remoto (vibração, temperatura, current): $8,500$12,000
• AR400 steel deck upgrade (contra. poliuretano): $22,000$35,000
• Dust collection hood and ducting: $15,000$22,000

Pacotes de serviços:

• Garantia padrão: 12 meses partes, 90 days labor
• Garantia estendida (24 meses): 812% do custo do equipamento
• Commissioning and training (3 dias no local): $4,500$6,500 plus travel
• Annual maintenance contract: $12,000$18,000 (includes two inspections, priority parts)

Opções de financiamento:

• Letter of Credit (L/C à vista): Standard for import transactions
• 30% depósito, 70% against shipping documents
• Locação de equipamentos: 3660 termos do mês, 68% ABRIL (sujeito a aprovação de crédito)
• Tradein program: 1525% crédito para equipamento usado qualificado

Perguntas frequentes

P: Can this screen handle coke at 120°C directly from the quench tower?
UM: Sim, the standard configuration handles continuous material temperatures up to 150°C. The bearing housing cooling fins and hightemperature grease (NLGI Grade 2 with PTFE) maintain bearing temperatures below 85°C at 120°C feed. For sustained operation above 120°C, we recommend the heated deck option to prevent thermal shock to polyurethane panels.

P: What is the typical lead time for import coke vibration screen procurement?
UM: O prazo de entrega padrão é 1418 semanas a partir da confirmação do pedido, incluindo fabricação (810 semanas), quality inspection (1 semana), and ocean freight (46 semanas). Expedited manufacturing (68 semanas) is available at 1215% prêmio. Air freight can reduce total lead time to 810 weeks but adds $8,000$15,000 in shipping costs.

P: How does this screen compare to banana screen designs for coke classification?
UM: Banana screens offer 1520% higher capacity per unit area due to variable deck angle, but our linear motion design provides 58% better screening efficiency at equivalent capacity. For coke applications where product quality is prioritized (blast furnace or foundry), the linear motion design is preferred. For highthroughput applications where some efficiency loss is acceptable, banana screens may be considered.

P: Quais peças de reposição devo estocar para o primeiro ano de operação?
UM: Recommended initial spares inventory: 2 sets of screen panels (one per deck), 4 exciter bearings (SKF 22320 ou equivalente), 2 sets of rubber buffer springs (8 por conjunto), 1 set of ball tray assemblies (incluindo 200 rubber balls), 1 spare motor (if not locally available). Estimated cost: $18,000$25,000. Isso cobre 95% of common failure modes.

P: Can this screen be retrofitted into an existing screening tower?
UM: Sim, but requires structural assessment of support beams (must withstand 4.56.0 G dynamic load), chute modifications for feed distribution, and electrical upgrades for dual motor configuration. Typical retrofit cost: $25,000$45,000 including engineering, aço estrutural, and installation. We provide CAD drawings and structural load calculations for your engineering team.

P: What is the expected ROI timeline for replacing an existing screen?
UM: Com base em dados de campo de 12 instalações, o período médio de retorno é 814 meses. Primary savings sources: reduced maintenance labor (3540% of savings), extended deck life (2530%), improved product quality (2025%), and energy reduction (510%). Total annual savings typically range from $180,000$350,000 depending on throughput and current equipment condition.

P: How do I verify the screen meets ASTM or ISO standards for coke sizing?
UM: We provide factory test certificates per ASTM D4749 (coke sieve analysis) e ISO 1953 (hard coal sizing). Onsite acceptance testing follows ASTM D2234 procedures. We guarantee screening efficiency of 88% minimum at rated capacity, verified by 8hour production test with your coke sample. Thirdparty testing can be arranged at buyer's cost ($3,500$5,000).