GL&V Beloit 20-inch DD4600 Refiner

Serial: 12115948

Year 2012

The GL&V Beloit DD4600 is a 20-inch double‑disc refiner widely used in pulp and paper mills for fiber development, stock preparation, and consistency‑controlled refining. It’s an industrial‑grade, heavy‑duty machine typically sold through specialty equipment brokers, mill liquidators, or OEM refurbishers rather than mainstream retailers.

Because these refiners are niche, availability varies and pricing is rarely listed publicly.

🏭 What This Machine Is

• A double‑disc refiner used in pulp and paper production
• Designed for high‑consistency or low‑consistency refining, depending on configuration
• Known for robust construction, high throughput, and stable refining performance
• Often paired with GL&V or Beloit control systems, depending on the mill’s setup

⚙️ Typical Specs (varies by configuration)

These refiners are often customized, but common characteristics include:

• 20-inch plates
• High‑horsepower motor compatibility (often 400–800 HP depending on mill requirements)
• Adjustable plate gap with hydraulic or mechanical control
• Heavy cast‑iron or steel frame
• Replaceable refiner plates (various patterns depending on fiber type)
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Estimated B‑Tech Specification — GL&V 20" DD4600 Double‑Disc Refiner

1. General Description

Industrial double‑disc refiner used for fiber development in pulp and paper stock preparation. Suitable for low‑consistency (LC) or high‑consistency (HC) refining depending on configuration.

2. Mechanical Specifications

• Refiner Type: Double‑disc, horizontal shaft
• Plate Diameter: 20 inches (508 mm)
• Plate Speed: 900–1800 RPM (motor‑dependent)
• Plate Material: Hardened alloy steel
• Plate Adjustment: Hydraulic or mechanical (varies by model)
• Frame Construction: Heavy cast steel housing
• Rotor Type: Single rotating disc with stationary opposing disc

3. Motor & Power Requirements

Typical ranges (actual depends on mill duty):

• Motor Power: 400–800 HP (300–600 kW)
• Voltage: 4160V or 2300V (North America typical)
• Drive Type: Direct‑coupled or belt‑drive
• Starting Method: Soft‑start or VFD (if LC), fluid coupling (if HC)

4. Process Specifications

Low‑Consistency (LC) Version

• Operating Consistency: 2–5%
• Throughput: 50–250 TPD (tons per day), depending on energy input
• Specific Energy: 50–250 kWh/ton
• Plate Gap Control: Automatic hydraulic or manual

High‑Consistency (HC) Version

• Operating Consistency: 20–35%
• Throughput: 20–80 TPD
• Specific Energy: 100–400 kWh/ton
• Steam Handling: Venting required

5. Bearings & Lubrication

• Bearing Type: Heavy‑duty spherical roller bearings
• Lubrication: Forced lubrication system with oil cooler
• Oil Flow Rate: 10–20 L/min (typical)
• Oil Type: ISO VG 150 or OEM‑specified equivalent

6. Hydraulic System (if equipped)

• Hydraulic Pressure Range: 1000–2500 psi
• Actuator Type: Single or dual hydraulic cylinders
• Control: Manual, PLC‑integrated, or GL&V/Beloit control system

7. Dimensions & Weight (Typical)

• Length: 2.0–2.5 m
• Width: 1.5–2.0 m
• Height: 1.5–2.0 m
• Weight: 4,000–7,000 kg (9,000–15,000 lbs) depending on configuration

8. Utilities

• Cooling Water: 10–20 L/min
• Hydraulic Power Unit: 3–10 HP
• Instrumentation:
• Plate gap sensor
• Temperature sensors
• Vibration monitoring
• Motor load feedback

9. Typical Applications

• Kraft pulp refining
• Recycled fiber refining
• Tissue/towel fiber development
• Board and packaging stock refining
• Mechanical pulp pre‑refining