Dredge Overview
For sale: Large working bucket chain diamond dredger and wash plant. This is a production-scale bucket line dredge used for alluvial diamond mining operations. The dredge is suitable for diamond-bearing alluvial gravel recovery, river mining, and large-scale mineral recovery operations. Application: alluvial / river diamond recovery; can operate as a floating bucket-chain dredger or as a land-based wash plant fed by excavator.
To schedule an inspection or request additional details please call +1 (225) 301-2873 or send us an email.
General
- Year Built: 2023 (China)
- Dredge Type: Bucket-Chain (Bucket Ladder)
- Location: Democratic Republic of Congo
- Dredging Depth: 15 m (49 ft.)
- 100 m³/h
- Diamond Recovery: 90%
- 3 Jigs
Excavation Specs
- Dredging / Processing Capacity: 100 m3/h theoretical throughput, shown as approximately 150 T/h in the technical file. Internal capability brief uses an indicative 165-200 T/h range depending on material bulk density.
- Max Dredging Depth: 15 m (49 ft.)
- Bucket Count: 81 buckets.
- Bucket Mouth Size: approximately 90 cm long x 55 cm wide.
- Bucket Construction: cast steel; bottom plate 1.0 cm, shoulder thickness 1.2 cm, lip thickness 2.0 cm.
- Bucket Speed: not explicitly listed in the files available. The chain drive motor is listed as 55 kW with 760 rpm motor speed and ZQ1000 reduction box.
Physical Dimensions
- Overall Dredge Dimensions: 39 m length x 7.5 m width x 8.4 m height
- Full Load Draft: 0.7 m
- Approximate Total Weight: 90 T
- Pontoon: 2 pontoons, each 33 m x 2.5 m x 1.4 m
- Upper Arm / Ladder Section: 8.4 m x 1.6 m
- Underwater Arm / Ladder Section: 21 m x 1.4 m x 0.8 m
- Top Wheel / Tumbler: 1.2 m diameter x 1.3 m width
- Bottom Wheel / Tumbler: 1.4 m diameter x 1.3 m width
- Shipping: 12 x 40 ft HQ containers
Machinery & Power
- Total Installed / Electricity Consumption: 210.5 kW
- Diesel Generator Set: Cummins NTA855-G4, 250 kW, with Stamford alternator
- Chain Drive Motor: 55 kW variable-frequency motor
- Lifting Winch: 500 type, 15 kW
- Main Winch: 500 type, 15 kW
- Forward Winches: 2 x 400 type, 7.5 kW each
- Positioning Winches: 2 x 400 type, 5.5 kW each
- Water Pumps: 3 x Centrifugal pumps, 200 m3/h each, 18 m head, 22 kW each
- Total Water Consumption / circulation listed: 600 m3/h
- CCTV: 6 cameras
- Operating room: 3.0 m x 2.5 m x 2.2 m
Processing & Discharge
- Classifying Screen: 4.8 m length x 1.4 m diameter
- Inner Screen: 4.8 m length x 1.2 m diameter
- Outer Screen: 3.0 m length x 1.4 m diameter
- Mesh Size: 2 mm
- Jigging Section: 3 pulse-type jigging machines, each 4 m x 2 m
- Jig Capacity: 30-35 T/h per jig
- Jig Size Split: one jig for 2-8 mm, one for 8-16 mm, and one for 16-25 mm material
- Recovery note from our brief: the three-stage jig train is intended to separate fine, medium, and large stones so larger rough is not washed through with fines
- Discharge Arrangement: the files available do not clearly specify conveyor versus hopper discharge, so please mark this as requiring confirmation if needed for the listing
Equipment Capability Overview
One machine, two deployments. As a floating bucket-chain dredge, it works diamond-bearing river and alluvial gravels in water, digging up to 15 m below the surface; as a land-based wash plant, it is fed directly by excavator. Built for a 100 m³/h throughput, a three-stage jig train classifies every stone by size so nothing from the finest grit to an exceptional 100-carat-plus rough is ever lost.
Key Output – 3 stage Jig Size Classification
Process Flow (Feed to Diamond Concentrate)
Plant & Power
- Duty: 100 m³/h ≈ 165–200 T/h → ~2,000 m³ (≈3,300–4,000 T) per 20-hour day, ~52,000 m³/month
- Self-powered: Cummins NTA855-G4 250 kW diesel genset, Stamford alternator – full off-grid operation
- Feed prep: Ø1.4 m rotating classifying screen, 2 mm mesh, ahead of the jig train
- Water circuit: 3 × centrifugal pumps, 600 m³/h total recirculated
- Logistics: 39 m × 7.5 m hull, ~90 T; ships in 12 × 40 ft HQ containers
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Our bucket ladder dredge inventory changes often. If you don’t see what you’re looking for please give us a call at +1 (225) 301-2873 or email us to discuss what you’re looking for.