ERTONG MAKE

Product Overview The Heavy-Duty Apron Feeder series is engineered for extreme material handling applications where traditional conveyors fail. Featuring three load classes (LC1-LC3) and dual sealing configurations, this equipment complies with GB/T 3668-2001 (Apron Feeder Technical Specifications) to deliver unmatched reliability in mining, quarrying, and smelting operations. Capable of handling lump sizes up to 2,500 mm and temperatures exceeding 400°C, it serves as the backbone of primary crushing circuits and stockyard reclaim systems.

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Key Technical Parameters

1. General Specifications
   • Application: Feeding abrasive/hot materials (e.g., iron ore, blast furnace slag, granite) with bulk densities ≤3.2 T/m³.
   • Capacity Range:
     • LC1: 50–800 T/h (standard duty).
     • LC2: 800–2,000 T/h (heavy duty).
     • LC3: 2,000–5,000 T/h (extra-heavy duty).
   • Material Size: ≤80% of pan width (max. 2.5 m lumps).
2. Structural Components
   • Pan Assembly:
     • Width: 1,000–3,500 mm (GB/T 3668-2001 compliant).
     • Material: NM400 steel pans with replaceable Hardox 500 liners.
     • Overlap: 50–150 mm (dust-proof design).
   • Chain System:
     • Type: Forged alloy steel crawler chains (GB/T 36310-2018).
     • Tensile Strength: 800–1,500 kN (Class B to D per ISO 4348).
3. Drive & Power
   • Motor System:
     • Power Range: 15–1,250 kW (IE5 ultra-premium efficiency).
     • Speed Control: Hydraulic variable displacement or VFD-driven.
   • Speed Range: 0.005–0.5 m/s (stepless adjustment).
4. Sealing Configurations
   • Option A: Labyrinth + scraper seals (dust emission ≤10 mg/m³ per GB 16297-1996).
   • Option B: Spring-loaded rubber seals + air purge system (IP66 rating).
5. Performance Metrics
   • Impact Resistance: 50 kJ energy absorption at feed points.
   • Slope Capacity: 25° uphill/15° downhill operation.
   • Maintenance Interval: 15,000 hours (sealed-for-life bearings).
   • Service Life: ≥12 years (LC1/LC2), ≥8 years (LC3).

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Design Innovations

• Modular Pan System: Bolt-on liner replacement without disassembling chains.
• Dual-Pivot Design: Articulated frames absorb shock loads up to 500 tonnes.
• Smart Lubrication: Centralized greasing with IoT-enabled pressure monitoring.
• Spillage Control: Curved sideplates + V-shaped trough for 0.1% spillage rate.

Typical Applications

• Primary feed systems for gyratory crushers.
• Hot clinker handling in cement plants.
• Overburden removal in open-pit coal mines.

Product Positioning Positioned as the ultimate material handling workhorse, this series exceeds GB standards in wear life (2× industry average) and energy efficiency. It targets mega-projects requiring 24/7 operation under -30°C to +550°C extremes.

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Compliance & Standards

• Structural Integrity: GB/T 3811-2008 (Crane Design Code adapted for dynamic loads).
• Welding Quality: GB/T 12469-2017 (Level I radiographic testing).
• Noise Control: GB 12348-2008 (≤85 dB(A) at 1 m).

Optional Features

• Water-cooled pans for molten slag handling.
• RFID-enabled wear liner tracking system.
• Explosion-proof package (Ex IIB T4 per GB 3836.1-2010).
• Autonomous load-sensing via strain gauge arrays.

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Operational Advantages

• 40% Energy Savings: Regenerative drives recover downhill braking energy.
• Zero Downtime: Split sprockets allow onsite shaft repairs.
• Universal Compatibility: Frames adapt to Komatsu/Caterpillar track chains.