Bucket Chain Dredger

WRTJ-200 | Bucket-Ladder Excavation with Onboard Screening and Gold Recovery

The WRTJ-200 bucket chain dredger from Shandong Wanrun Intelligent Equipment Co., Ltd. excavates riverbed material with a circulating bucket ladder, screens it on board and treats the fine fraction through fixed gold-carpet sluices. It is intended for river sand excavation and alluvial gold-bearing sand, subject to site assessment. Mechanical bucket lifting performs the excavation, while screened oversize is discharged separately from the processed fraction.

Reference configuration only. Final equipment selection and operating conditions must be agreed in the project technical specification.

Match the Equipment to Your Dredging Task

Continuous bucket-ladder excavation:

• 62 buckets of 0.10 m³ nominal volume cut into the riverbed and lift feed mechanically, so excavation does not depend on suction alone.

Onboard trommel screening:

• Excavated material is classified in a single pass. The reference package uses 8 mm openings, to be re-selected against the required sand grading before ordering.

Integrated gold-recovery circuit:

• Three fixed sluices with gold carpet are fitted on both sides of the hull, treating the screened fines while dredging continues. No recovery percentage is specified or guaranteed.

Winch-controlled positioning:

• An 11 kW main anchor winch, a 15 kW ladder winch and four 4 kW swing winches support advancing, ladder depth and movement across the working face.

Self-contained services and matched wear parts:

• A 200 kW, 380 V, 50 Hz diesel generator set supplies onboard power, two 22 kW pumps serve the screening and sluicing circuit, and the chain, pins and buckets are listed as matched wear components.

Understand How Bucket-Ladder Excavation Works

The bucket ladder is lowered to the working face. As the chain circulates, the buckets dig into the sediment, carry it up the ladder and discharge it into the onboard screen; oversize material is rejected while the finer fraction continues to the sluices or to the sand outlet shown on the general arrangement drawing. The bucket chain, pins and wheels therefore define the excavation duty, while the water-supply pumps serve the processing circuit rather than representing solids output.

This is a mechanical bucket-ladder arrangement, not a suction dredger: no submerged suction pump performs the excavation. Unlike a cutter suction dredger, this configuration is not specified with a rotating cutter head, so consolidated layers, boulder-rich deposits and rock require separate engineering review before selection.

Review the Reference Specifications

Check Whether This Configuration Fits Your Site

Consider this bucket chain dredger for river sand excavation and alluvial gold-bearing sand where mechanical lifting and onboard screening are required. River, channel and reservoir applications need a sediment assessment rather than selection by waterbody type alone. Send material description or grading information, required working depth, target output, discharge arrangement and whether gold recovery is in scope, so the proposal can define the equipment boundary and operating assumptions.

Frequently Asked Questions

What is a bucket chain dredger? A bucket chain dredger, also called a bucket ladder dredger, lifts riverbed material with buckets mounted on a circulating chain, instead of removing it with a submerged suction pump.

Is 150 m³/h guaranteed production? No. It is the maximum working capacity listed in the reference configuration. Achievable output depends on material compactness, grain mix, bucket filling and the depth at which you actually work.

Can it run without the gold recovery circuit? Yes. The configuration can be discussed for sand-only dredging, in which case the onboard processing scope is defined by the required sand grading and the discharge arrangement.

What depth and material can it handle? The reference sheet lists 15 m maximum dredging depth. The channel-steel ladder and high-manganese cast-steel chain suit abrasive sand; rock or boulder-rich beds need a separate engineering review.

What power does the WRTJ-200 need? The reference package carries a 200 kW, 380 V, 50 Hz diesel generator set, so operation does not depend on shore power. Two 22 kW water-supply pumps serve the screening and sluicing circuit.

What should I send when requesting a bucket chain dredger proposal? Provide sediment type and particle-size information, working depth, required output, discharge arrangement, whether gold recovery is required, and the project location. State how the required output is to be measured.

Request a Dredging Proposal

Discuss your bucket chain dredger requirements with Shandong Wanrun Intelligent Equipment Co., Ltd. Send the site information above to request a configuration review and project-specific quotation.

Request a Dredging Proposal