Technical Datasheet: Chinese Coke Vibration Screen

Document Code: CCS-DS-2023-01
Revision: 2.1
Date: October 26, 2023


1.0 Executive Summary

The Chinese Coke Vibration Screen represents a critical piece of processing equipment within the global metallurgical and carbon industries. Engineered for the rigorous dry classification of calcined petroleum coke (CPC), also known as “green” or “anode” coke, this machinery is pivotal in ensuring the precise particle size distribution required for aluminum smelting anodes and other carbon products. Modern Chinese manufacturers have evolved from basic replicators to innovators, offering screens that combine robust construction, advanced vibration mechanics, and intelligent control systems. This datasheet provides a comprehensive technical overview of the design principles, operational parameters, performance characteristics, and application-specific configurations of high-performance Coke Vibration Screens originating from China’s specialized heavy machinery sector.

2.0 Introduction & Application Scope

Calcined petroleum coke, a key raw material with high carbon content and low impurity levels, must be precisely sized before being used in anode paste or electrode production. Oversized or undersized particles negatively impact anode density, electrical conductivity, and consumption rates in electrolytic cells. The Chinese Coke Vibration Screen is designed explicitly for this high-abrasion, high-capacity screening task.

Primary Applications:

  • Sizing of Calcined Petroleum Coke (CPC): Separating CPC into fractions such as -25mm+12mm, -12mm+6mm, -6mm+3mm, and -3mm (fines) after calcination and cooling.
  • Pre-Screening of Raw Green Coke: Removing fines and impurities before the calcining process.
  • Carbon Anode Block Production: Ensuring consistent feedstock for anode paste mixers.
  • Graphite Electrode Industry: Precise grading of coke aggregates.
  • Other Abrasive Materials: Capable of handling similar materials like silicon metal, sintered ore, and certain minerals.

3.0 Design Principles & Structural Composition

Chinese designs typically emphasize durability and maintenance accessibility. Key structural components include:

3.1 Screen Box:

  • Constructed from high-strength, abrasion-resistant steel (often Q345B or equivalent). Critical wear areas (side plates, discharge lips) are lined with replaceable AR400 or Mn steel liners.
  • A fully enclosed design with dust-proof covers and flanged connections is standard to contain coke dust, complying with environmental standards.
  • The box is stress-relieved to prevent welding deformation under cyclic loading.

3.2 Screening Decks & Media:Chinese Coke Vibration Screen Datasheet

  • Configurable with 1 to 4 decks depending on separation stages required.
  • Screen Mesh Options: Heavy-duty woven wire screen (most common for coarse cuts), polyurethane (PU) modular panels (excellent abrasion resistance & anti-blinding), or rubber screen panels.
  • PU panels are highly recommended for coke screening due to their long service life (3-5x that of wire mesh), noise reduction properties, and self-cleaning apertures.

3.3 Vibration Exciter System:
The heart of the machine. Two dominant technologies are employed:

  • Dual-Shaft Inertial Vibrator (Linear Motion Screen):

    • Utilizes two synchronized counter-rotating shafts with eccentric masses.
    • Generates a linear throwing motion ideal for high-capacity sizing of bulk materials.
    • Stroke is adjustable by adding/removing eccentric weights.
    • Driven by twin vibration motors or a single motor via a gear coupling system ensuring synchronization.
  • Single-Shaft Circular Vibrator (Circular Motion Screen):

    • Features a single shaft with eccentric masses.
    • Produces a circular or elliptical vibration trajectory.
    • Often used for simpler applications or pre-screening.

3.4 Isolation System:

  • Spring Supports: Helical steel springs or rubber compression springs isolate over 95% of dynamic forces from the supporting structure.
  • Alternative: Airbag isolators on premium models for superior isolation and adjustable deck attitude.

3.5 Drive Unit:

  • Utilizes premium industrial-grade TEFC (Totally Enclosed Fan Cooled) motors (e.g., Siemens, WNM, or Chinese premium brands).
  • Power ranges from 7.5 kW to 45 kW depending on screen size and material load.
  • Flexible coupling connections protect motors from vibrational stress.

3.6 Base Frame & Support Structure:

  • Heavy-duty welded steel frame providing rigid support for vibration isolation system.

4.0 Technical Parameters & Specifications

Standard model range covers varying feed rates and sizing requirements:

Model Parameter CCS-1236 CCS-1548 CCS-1860 CCS-2166
Deck Size (L x W) 1200×3600 mm 1500×4800 mm 1800×6000 mm 2100×6600 mm
Number of Decks 1-3 2-4 2-4 2-4
Screen Area ~4.3 m² ~7.2 m² ~10.8 m² ~13.9 m²
Max Feed Size ≤150 mm ≤200 mm ≤250 mm ≤300 mm
Capacity (CPC) 60-80 t/h 120-160 t/h 200-280 t/h 300-400 t/h
Vibration Frequency 800-1000 rpm (adjustable)
Amplitude (Stroke) 4-10 mm (adjustable)
Motor Power 7.5 kW x 2 /11 kW x1***************************15 kW x218 kW x222 kW x230 kW x2
Isolation Type **Helical Steel Springs / Rubber Springs**
\ *Weight(Approx.)**~4500 kg~7500 kg~11000 kg~15000 kg

\ \ \ Note:\ \ Specifics vary by manufacturer.\ \ Capacities are based on bulk density of CPC (~0.\ \ \ \ \ \ \ \ \ \ .9 t/m³),\ normal moisture,\ .and defined separation efficiency.Chinese Coke Vibration Screen Datasheet

5.\ .Performance Characteristics & Advantages

.5.\ .High Efficiency &\ .Precision:*
.Optimized kinematics ensure proper material stratification &\ .rapid conveyance across the deck,\ .achieving screening efficiencies up to\
.90-\ .95% for most size ranges.\
.Minimized pegging &\ .blinding,\ especially with PU panels.

.5.\ .Robustness &\ .Durability:*
.Heavy-duty construction withstands continuous impact &\ abrasion from sharp,\ hard coke.
.High-quality vibrator bearings (\ e.g., SKF,\ FAG,\ NSK)\ with L10 life calculations exceeding\
.20,\000 hours under rated load.
.Easy-replaceable wear parts minimize downtime.*

.5.\ .Energy Efficiency &\ Low Noise:*
.Efficient direct-drive systems &\ optimized mass balance reduce specific power consumption.
.Enclosed design &\ use of polyurethane dampens operational noise to <85 dB(A)\ at\
.1 meter.*

**.5.\ Intelligent Monitoring (\ Optional):**
.Modern units can be equipped with bearing temperature sensors,\ vibration transducers,\ &
motor current monitors connected to PLC systems for predictive maintenance.*

.5.\ Customization Flexibility:*
.Chinese manufacturers excel at providing application-engineered solutions:\ adjustable deck angles,\ special feed boxes,\ multiple discharge chutes,\ explosion-proof designs for dusty environments,\ &
corrosion-resistant coatings.

6.\ Installation,\ Operation &\ Maintenance Guidelines

.6.\ Foundation &\ Installation:*
A massive concrete foundation with sufficient stiffness &
mass (\ typically\
>\
>\
>\
>\
> mass of screen)\ is mandatory to absorb dynamic loads.*

Installation must ensure levelness; misalignment causes uneven stroke &
premature wear.

.6.\ Operational Protocol:*

Startup must be under no-load conditions.
Feed must be even &
distributed across the full width of the feed box via a conveyor or chute.

The feed rate should be kept within designed capacity to prevent overload &
reduced efficiency.

.6.\ Maintenance Schedule:*

Daily: Visual inspection for loose bolts,
abnormal noise,
& check isolation springs.

Weekly: Inspect screen panel tension &
wear; clean dust buildup.

Monthly: Check vibrator bolt torque; inspect motor alignment &
couplings.

Annually/Bi-Annually: Comprehensive inspection; replace worn liners &
screen panels; regrease or replace vibrator bearings as per service life.

7.\ Conclusion

The contemporary Chinese Coke Vibration Screen is a sophisticated,
reliable,
and efficient workhorse engineered for one of industry’s most abrasive classification tasks.Its evolution reflects a deep understanding of process requirements in aluminum smelters &
carbon plants worldwide.With an emphasis on structural integrity,
low lifecycle cost,
and increasing integration of smart monitoring features,
this equipment stands as a testament to China’s capability in producing heavy process machinery that meets both domestic demand &
international standards.For any facility processing calcined petroleum coke,
selecting a properly specified Chinese vibration screen offers a compelling balance of performance,
durability,
and value,
contingent upon rigorous supplier qualification &
adherence to prescribed installation and maintenance practices

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