Sujet: Addressing Downtime and Contamination in Coke Screening Operations

1. OUVERTURE ENTRAÎNÉE PAR POINT DE DOULEUR

Every ton of coke that bypasses your screening system represents lost revenue and potential downstream penalties. Les directeurs d'usine sont confrontés à trois défis persistants: blinding of screen media due to moisture and fines, fatigue structurelle from highimpact feed, et 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 par heure de production perdue. En plus, un 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 opération? The solution requires a machine built specifically for the highimpact, highwear environment of coke processing.

2. APERÇU DU PRODUIT

Le Fabricant chinois de marque privée d'écran vibrant de coke offers a heavyduty, linearmotion vibrating screen engineered for the classification of metallurgical coke, coke de fonderie, et coke de pétrole. This equipment operates on a dualshaft exciter system to generate a straightline stroke, propelling material across the deck for efficient stratification.

Flux de travail opérationnel:
1. Présentation du flux: 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. Séparation: Material passes over polyurethane or perforated steel panels. Undersize falls through; le surdimensionné se déplace vers l'extrémité de déchargement.
4. Décharge: Two to three product streams (par ex., +50mm, 2550mm, 25mm) are directed to separate conveyors.

Champ d'application: Ideal for dry screening of blast furnace coke, coca aux noix, and coke breeze. Limites: Not recommended for wet screening applications where moisture exceeds 12%, as this can cause rapid blinding.

3. CARACTÉRISTIQUES PRINCIPALES

HighStroke Exciter Assembly | Base technique: Double arbre, counterrotating gearbox with eccentric weights | Avantage opérationnel: Generates a 10–12mm stroke amplitude, preventing material stratification failure common in coke screening | Impact sur le retour sur investissement: Reduces recirculation loads by 15%, lowering energy consumption per ton processed.

AbrasionResistant Deck Design | Base technique: 12mm thick polyurethane panels with 65 Dureté Shore A, or AR400 steel plate options | Avantage opérationnel: Withstands the sharp, angular edges of coke particles, prolongeant la durée de vie du support d'écran en 300% par rapport au caoutchouc standard | Impact sur le retour sur investissement: Decreases annual media replacement costs by approximately $8,000 par pont.

Système de tension à dégagement rapide | Base technique: Hydraulic or manual wedge tensioners on side plates | Avantage opérationnel: Allows a twoman crew to replace a screen panel in under 30 minutes, contre 2 hours on bolted systems | Impact sur le retour sur investissement: Récupère 1.5 hours of production time per changeout, valued at over $20,000 annuellement.

DustTight Sealing | Base technique: Compressionsealed side plates with labyrinth seals on bearings | Avantage opérationnel: Prevents fugitive coke dust from entering bearing housings, une des principales causes de défaillance prématurée | Impact sur le retour sur investissement: Prolonge la durée de vie des roulements de 6 mois à 18 mois, économie $2,500 par remplacement de roulement.

Réglage de l'angle variable | Base technique: Adjustable support springs allowing deck angle from 15° to 25° | Avantage opérationnel: Enables operators to finetune material retention time for varying coke moisture levels | Impact sur le retour sur investissement: Improves screening efficiency by 5–8% during seasonal moisture changes.

Modular Deck Frame | Base technique: Boulons ensemble, segmented side plates | Avantage opérationnel: Allows for partial deck replacement without removing the entire screen from the structure | Impact sur le retour sur investissement: Reduces structural modification costs by 40% when upgrading to different media types.

HeavyDuty Cross Members | Base technique: 150mm x 150mm hollow structural sections with wear liners | Avantage opérationnel: Resists bending and cracking from the impact of 50kg coke lumps falling from a 1.5meter height | Impact sur le retour sur investissement: Eliminates structural weld repairs, which average $3,000 par incident.

4. AVANTAGES CONCURRENTIELS

| Mesure de performances | Norme de l'industrie (Écran générique) | Solution d'écran vibrant pour coke | Avantage (% amélioration) |
| : | : | : | : |
| Efficacité du dépistage (25mm de coupe) | 8588% | 9497% | +10% |
| La vie des médias à l'écran (Polyuréthane) | 46 mois | 1218 mois | +200% |
| Intervalle de remplacement des roulements | 6 mois | 1824 mois | +200% |
| Temps de changement (Pont unique) | 2 heures | 30 minutes | 75% |
| Niveau de bruit à 1 Mètre | 95 dB(UN) | 85 dB(UN) | 10 dB(UN) |
| Structural Warranty Period | 1 année | 3 années | +200% |

5. SPÉCIFICATIONS TECHNIQUES

| Paramètre | Spécification (Model CVS2448) | Spécification (Model CVS3660) |
| : | : | : |
| Capacité (Coke, 25mm de coupe) | 150–200 TPH | 300–400 TPH |
| Zone d'écran | 6 m² (24 pieds carrés) | 12 m² (36 pieds carrés) |
| Nombre de ponts | 2 (facultatif 3) | 2 (facultatif 3) |
| Fréquence des vibrations | 750–900 tr/min | 750–900 tr/min |
| Amplitude de course | 10–12 mm | 10–12 mm |
| Puissance du moteur | 2 x 11 kW (15 HP) | 2 x 22 kW (30 HP) |
| Matériau de construction | S355J2+N Steel / AR400 Liners | S355J2+N Steel / AR400 Liners |
| Média d'écran | Polyuréthane (65UN) or Perforated Steel | Polyuréthane (65UN) or Perforated Steel |
| Poids opérationnel | 8,500 kilos | 14,000 kilos |
| Plage de température de fonctionnement | 20°C à +80°C | 20°C à +80°C |

6. SCÉNARIOS D'APPLICATION

Steel Mill Blast Furnace Coke Screening | Défi: A steel producer in Hebei Province was experiencing 8% amendes (10mm) carryover into their blast furnace feed, causing permeability issues and increasing coke rate by 5 kg par tonne de métal chaud. | Solution: Installation of a dualdeck Coke Vibration Screen with 25mm and 10mm polyurethane panels. | Résultats: Report d’amendes réduit à 2.5%. Le taux de coke de haut fourneau a diminué de 4 kg/THM, saving the plant $1.2 million annually in coke costs.

Foundry Coke Processing Plant | Défi: 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% teneur en humidité. | Solution: Implementation of a singledeck screen with a 15° deck angle and 12mm stroke to maintain material flow. | Résultats: L’efficacité du dépistage s’est améliorée par rapport à 82% à 96%. Customer rejection rate dropped from 5% à 0.5%, securing a longterm supply contract.

Classification du coke de pétrole | Défi: 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. | Résultats: Screen media life increased from 3 mois à 14 mois. Maintenance downtime decreased by 70%.

7. CONSIDÉRATIONS COMMERCIALES

Niveaux de tarification des équipements (FOB Shanghai Port):

• Modèle standard (CVS2448): $45,000 – $55,000 (2pont, polyurethane media, 15 Moteurs HP)
• Modèle robuste (CVS3660): $78,000 – $95,000 (3pont, Doublures AR400, 30 Moteurs HP, dust enclosure)
• Custom Engineered Model: $110,000+ (for specific feed chute integration, special alloy construction, ou moteurs antidéflagrants)

Fonctionnalités facultatives:

• Système de lubrification automatisé: $4,500 (reduces manual greasing frequency to quarterly intervals)
• Kit de surveillance des vibrations: $6,200 (provides realtime bearing and stroke data for predictive maintenance)
• Spare Parts Package (2année d'approvisionnement): $12,000 (includes bearings, scellés, et 4 ensembles de panneaux d'écran)

Forfaits de services:

• Basique (1année): Assistance technique à distance + 1 visite de mise en service sur site.
• Prime (3année): Includes Basic + quarterly inspection reports + 10% remise sur les pièces détachées.
• Garantie de performance: Garantie contractuelle de 93% screening efficiency at specified capacity, with financial penalties if not met.

Options de financement:

• 30% Acompte + 70% L/C at Sight (Standard)
• Location-propre: 36terme d'un mois avec 5% rachat à la fin.
• Paiement différé: 50% vers le bas, 50% after 90day performance acceptance.

8. FAQ

Q: Can this screen handle the high impact of direct feed from a crusher?
UN: Oui. 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 mètres. 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?
UN: 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%)?
UN: The linear motion and adjustable deck angle help manage moisture. Cependant, for consistent performance above 10% humidité, we recommend specifying a heated deck option or a dewatering screen design.

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

Q: Can I use my existing screen media with this machine?
UN: 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: Quelles sont les exigences d'alimentation pour l'installation?
UN: 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?
UN: 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.