Preheating Requirements for Briquetting Press Startup

Briquetting presses often require controlled preheating before full operation to ensure optimal performance, material binding, and equipment longevity. The specific warm-up protocols vary by press type and material processed.

1. Biomass Briquetting Presses

• Die Heating (Critical)

  • Electric or gas heaters raise die temperature to 80-110°C before feeding material.

  • Purpose: Softens natural lignin in biomass to act as a binder.

  • Time: 20-40 minutes depending on die mass.

• Hydraulic Oil Warming

  • Viscosity stabilization at 40-60°C via:

    • Built-in oil heaters, or

    • Idle pump circulation for 10-15 minutes.

2. Metal Chip Briquetting Presses

• Bearing Pre-lubrication

  • High-temperature grease must reach 50-70°C to ensure proper flow.

  • Achieved by:

    • Running press at 10-15% capacity for 5-10 minutes, or

    • External bearing heaters.

• Hydraulic System Conditioning

  • Cold starts below 10°C require:

    • Tank heaters to maintain oil at ≥25°C, or

    • Low-viscosity winter-grade hydraulic fluid.

3. Universal Requirements

• Material-Specific Warm-up

  • Coal/coke fines: Preheat to 60-80°C for better compaction.

  • Agro-waste: Ambient temp must be >15°C to prevent moisture issues.

• Electrical Components

  • Motor insulation resistance check if stored in humid conditions.

  • Control panel warm-up to prevent condensation (min. 30 minutes in cold environments).

4. Verification Steps Before Full Operation

1. Temperature sensors confirm critical zones reach thresholds.

2. Test runs with reduced pressure (50% normal) for 5-10 cycles.

3. Inspection for:

   • Uneven heating patterns

   • Lubrication flow verification

   • Hydraulic pressure stability

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