1. PAINPOINT DRIVEN OPENING

Is your coke screening operation facing persistent, costly inefficiencies? For plant managers and engineering contractors, the final screening stage before blast furnace charging is a critical bottleneck with direct implications for productivity and cost. Common challenges include:

Excessive Fines Generation: Aggressive vibration from standard screens can degrade coke, creating excessive 5mm fines that reduce furnace permeability and increase fuel rates. This can lead to a 25% loss in saleable product.
Unplanned Downtime: Frequent screen deck replacements due to abrasive wear from sharp coke edges halt production lines. A single changeover can cost over 8 hours of lost processing time.
Inconsistent Product Grading: Inaccurate separation leads to offspec material, risking blast furnace performance penalties and customer rejections.
High Maintenance Burden: Bearings and motors on conventional vibratory screens fail prematurely under heavy coke loads, driving up spare parts inventories and labor costs.
Environmental & Compliance Risks: Noncompliant components or excessive dust generation can conflict with stringent plant environmental policies.

Are you searching for a screening solution that protects your product integrity, extends equipment life, and ensures consistent compliance? The right RoHS compliant coke vibration screen directly addresses these operational and financial pressures.

2. PRODUCT OVERVIEW

The RoHS Compliant Coke Vibration Screen is a heavyduty linear or elliptical motion vibrating screen engineered specifically for the sizing and scalping of metallurgical coke. Its design prioritizes material preservation, durability, and adherence to environmental substance directives.

Operational Workflow:
1. Feed & Distribution: Sized coke from the crusher or cooler is evenly distributed across the full width of the screen’s feed box.
2. Stratified Screening: Controlled vibratory motion stratifies the bed, allowing nearsize particles to contact the robust screen deck surface efficiently.
3. Accurate Separation: Material is separated into precise fractions (e.g., blast furnace coke, nut coke, breeze) via single or multideck configurations.
4. Discharge & Conveyance: Sized fractions discharge onto dedicated conveyors for final stockpiling or furnace charging.

Application Scope: Primary sizing of metallurgical coke (2580mm), scalp removal of oven push fines (>5mm), and nut coke separation. Ideal for integrated steel plants and merchant coke facilities.

Limitations: Not designed for sticky materials, wet screening applications, or extreme temperature variations beyond specified operating ranges without specialized modifications.

3. CORE FEATURES

RoHS Compliant Component Suite | Technical Basis: Hazardous Substance Restriction compliance in all electrical/electronic components & wearresistant alloys | Operational Benefit: Eliminates risk of noncompliance in regulated markets, ensures safer endoflife disposal | ROI Impact: Avoids potential fines/export barriers, enhances corporate sustainability profile

LowDegradation Vibration Profile | Technical Basis: Precisely tuned exciter mass & frequency to achieve optimal material travel velocity without excessive throw | Operational Benefit: Minimizes mechanical degradation of coke lumps, reducing problematic fines generation by up to 30% | ROI Impact: Preserves product yield and blast furnace efficiency, directly protecting revenue

AbrasionResistant Deck System | Technical Basis: Modular polyurethane or rubberclad steel panels with reinforced edges in highwear zones | Operational Benefit: Extends deck service life by 35x compared to woven wire mesh; reduces changeout frequency | ROI Impact: Lowers spare parts costs and significantly reduces labor hours dedicated to maintenance

Sealed & Protected Bearing Assembly | Technical Basis: Labyrinth seals with greasepurge systems on highstress exciter bearings | Operational Benefit: Prevents ingress of abrasive coke dust; extends bearing service intervals beyond 10,000 hours | ROI Impact: Reduces unplanned bearing failures by an estimated 70%, ensuring production continuity

Modular Frame Construction | Technical Basis: Bolttogether hightensile steel sections with localized reinforcement at stress points | Operational Benefit: Simplifies transport and installation; allows for targeted replacement of worn sections | ROI Impact: Cuts installation time by 40% versus welded frames; lowers longterm structural upkeep costs

Dust Containment Skirting | Technical Basis: Integrated multilayer skirtboard system at feed and discharge points with quickrelease clamps | Operational Benefit: Effectively controls dust emission at transfer points, supporting plant environmental goals | ROI Impact: Reduces housekeeping load and mitigates risks associated with airborne particulates

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Conventional Coke Screen) | RoHS Compliant Coke Vibration Screen Solution | Advantage (% Improvement) |
| : | : | : | : |
| Deck Panel Lifespan (Abrasive Wear) | 3 6 months (woven wire) | 18 24 months (polyurethane clad) | +300% improvement |
| Fines Generation (5mm) During Screening| Baseline (100%)| Field data shows reduction to ~70% of baseline| Reduction of ~30% |
| Mean Time Between Bearing Failures (MTBF) | ~6,000 operating hours| >10,000 operating hours| +67% improvement |
| Energy Consumption per Ton Screened| Baseline (100%)| Optimized drive & mass reduces consumption by ~15%| Reduction of ~15% |
| Compliance Certification| May contain restricted substances (Pb, Hg in components)| Full RoHS compliance documentation provided| Mitigates regulatory risk |

5. TECHNICAL SPECIFICATIONS

Capacity Rating: Models available from 200 to 1,500 metric tons per hour (dependent on aperture size and moisture content).
Screen Deck Options: Single or double deck; panel sizes typically 1.2m x 2.4m up to 2.4m x 6.0m.
Deck Media: Highdurability,tensioned polyurethane or rubber panels with steel reinforcement. Apertures from 5mm to 80mm standard.
Vibration Mechanism: Dual shaft eccentric exciter(s) with selfaligning spherical roller bearings.
Drive System: IP66rated electric motor(s) coupled via durable Vbelts or direct drive gearbox. Power range: 7.5 kW to 45 kW.
Structural Frame: Heavyduty hotrolled steel channels with corrosionresistant primer and finish coat.
Operating Environment: Ambient temperature range: 20°C to +50°C. Feed material temperature up to 100°C continuous (higher with special decks).
Compliance Standards: Electromechanical components comply with EU RoHS Directive 2011/65/EU.

6. APPLICATION SCENARIOS

[Integrated Steel Plant Blast Furnace Feed] Challenge: A major steel producer experienced a consistent +4% generation of undersize fines at the final screening station before the blast furnaces.This degraded furnace permeability,increasing fuel rates.The existing screens also required deck changes every five months,causing regular downtime.Solution: Installation of two doubledeck RoHS compliant coke vibration screens configured for precise separation at >25mm.Results: Fines generation reduced by an estimated28%.Screen deck service life extendedto18months.Blast furnace team reported improved gas flow consistency.

[Merchant Coke Producer Product Grading] Challenge: A merchant cokery supplying various global customers faced product specification variancesand occasional rejections due to oversizein nutcoke fractions.Conventional screens lacked precision,and component compliance was a concernfor European shipments.Solution: Retrofittingthe final screening linewitha customsizedRoHS compliantcoke vibration screen featuring precision deck tensioning.Results: Product grading accuracy improved,yielding99% consistency within spec.RoHS documentation streamlined export logistics.The plant manager noted areductionin customer quality complaints.

7.COMMERCIAL CONSIDERATIONS

Our RoHS compliantcoke vibration screens are offered in three primary configuration tiers:

1.Standard Duty Series: For capacities up to500tph.Idealfor smaller plantsor supplemental lines.Includes baseRoHS complianceand polyurethane decks.
2.HeavyDuty Series: For capacities5001200tph.Features reinforced frameconstruction,dustcontainment skirting,and premium bearing assemblies as standard.
3.Custom Engineered Solutions: For capacitiesexceeding1200tphor unique spatial/process constraints.Includes full engineering reviewand performance guarantees.

Optional Features & Upgrades: Enclosed designsfor total dust control,variable frequency drivesfor process tuning,hightemperaturedeck materials(>150°C),advanced condition monitoring sensors.

Service Packages: Choosefrom Basic Warranty(12months),Planned Maintenance Agreements(spare parts kits,inspections),or FullService Contracts covering parts,labor,and performance audits.

Financing Options: We workwith thirdparty partners tooffer equipment leasingor financing plans,turning capital expenditure into an operational expense formore flexible budgeting.

8.FAQ

Q1:What does 'RoHS compliant' mean specifically for this equipment?
It certifies that all applicable electrical components(motors,sensors,wiring)and homogeneous materials within wear parts(specific alloys,polyurethane compounds)are restrictedto levels below thresholds setfor lead,cadmiummercury,and other hazardous substances.This is criticalfor operationin oremarketing productsinto regulated regionslike the European Union.

Q2:Canyour screen handle 'green'orcoke directlyfromthe oven?
Our standard models are ratedfor material temperaturesup to100°C continuous.For hotcoke directlyfromthe oven(whichcan exceed300°C),we mustengineer aspecialized solutionwithhightemperaturedecks,bearings,and lubrication systems.Contact us todiscuss your specific feed temperature profile.

Q3:Whatis thereal impacton my maintenance schedule?
Field data indicates themost significantchangesare extended intervalsbetween major services.Deck replacement cycles typically triple.Bearing regreasing intervals extendby50%ormore.The modular designalso allowsfaster panel changeswhen required,significantly reducing downtime events comparedto weldedin decksystems.

Q4:Arewespare parts readily available,and are they also compliant?
We maintaina global inventoryof criticalwear parts.All replacementparts suppliedbyusforthe original equipmentare guaranteed tomeetthe sameRoHS compliance standardsensuringyour operationremains consistentoverthe machine's lifecycle

Q5:Cana legacy vibrating screen beretrofittedtobeRoHS compliant?
While somecomponentscan be replacedwithcompliant versions(motors,wiring),full compliance often requires redesignof assembliesand material specifications.A comprehensive auditof yourexisting equipmentis thefirst step.We generally findthat fora core process like cokescreening,the performance gainsjustify investmentin anewengineered solutionratherthan partial retrofitting

.How doyou ensuregrading accuracyand consistency?
Accuracyis engineered throughmultiple factors:tunedvibration parametersfor optimal stratification,the useof precisely moldedpolyurethane deckswhichmaintainaperture size,and arigidframe that minimizes flexand vibration harmonics.This combination delivers consistent sizing performance documentedin our factoryacceptancetest reports providedwitheach unit