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Portable 4-Inch Suction Gold Dredge with High-Pressure Pump

Portable 4" Gold Dredge for Placer Mining


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【Capacity】10-50m³/h
【Type】2.5-10inch

Portable Gold Dredge Professional Gold Dredge Backpack Gold Dredge Commercial Gold Dredge Eco Gold Dredge

Work Principle

Advantages

Parameters

Successful Cases

FAQ

Work Principle

The Portable 4" Gold Dredge revolutionizes placer mining with its compact design and high mobility, enabling gold recovery in remote riverbeds and streams. Its 4-inch suction hose and lightweight frame (under 100 kg) make it perfect for small-scale prospectors and outdoor enthusiasts, delivering efficient gold separation in challenging terrains.

Venturi Suction System

The dredge operates on the venturi principle: a high-pressure water pump forces water through a tapered jet, creating a powerful vacuum in the suction hose. This vacuum lifts gravel, sand, and gold-laden sediment from the riverbed into the system .

Classification & Concentration

Material enters a classifier screen where larger rocks are filtered out, while finer particles drop into a sluice box. The box features Hungarian riffles that generate vortexes, trapping heavy gold particles in their eddies. Lighter sediments are flushed back into the water, ensuring selective recovery .

Portable Mobility

Equipped with foldable handles and corrosion-resistant aluminum components, the dredge assembles in under 30 minutes. Its buoyant design floats stablely in shallow waters (0.5-3 meters deep), adapting to varying river conditions.

Product Advantages

Superior Gold Recovery Rate

The optimized riffle design achieves a 95%+ gold capture efficiency, even for micro-fine gold particles. Field tests show it recovers 30% more gold than traditional sluice boxes in identical conditions.

Energy Efficiency

Powered by a 4-stroke 5HP engine, the dredge consumes only 1.2 L/h of fuel, enabling all-day operation on a single tank. Its low noise output (≤75 dB) minimizes environmental disturbance.

Easy Maintenance

The self-cleaning sluice box requires minimal upkeep—typically only 1-2 cleanings per day. Quick-release components allow for on-site repairs without specialized tools .

Technical Parameters

Suction Gold Dredge

Model

FC-GD2.5

FC-GD3

FC-GD4-1

FC-GD4-2

FC-GD4-3

FC-GD4-4

FC-GD4-5

FC-GD6-1

FC-GD6-2

FC-GD6-3

FC-GD6-4

FC-GD6-5

Water Pump

5.5hp gasoline engine water pump*1

212cc gasoline engine water pump*1

420cc gasoline engine water pump(15hp)*1

186Fa diesel water pump (10 hp)*1

192Fa diesel water pump (15 hp)*1

500cc gasoline engine water pump(19.5hp)*1

212cc gasoline engine water pump*2

15hp gasoline engine water pump*2

186Fa diesel water pump*2

192Fa diesel water pump*2(15hp)

500cc gasoline engine water pump(19.5hp)*2

Gold Chute Size (W*L)

33*200cm

45*200cm

55*200cm

Adhesive Grass Matress Size

1 sheet

Suction Pipe Size

L5m*D2.5inch

L5m*D3inch

L5m*D4inch

L5m*D6inch

Floation Size

/

(200*20*30cm) *1 couple

(200*30*40cm)*1 couple

(250*30*40cm)*1 couple

The technical parameters provided are for reference only. Final product performance shall be subject to the official technical specifications.

Successful Cases

Rock Gold Mine - South Sudan

Placer Gold Mines - Zimbabwe

Chromite - South Africa

Alluvial Chrome Ore - Zimbabwe

Alluvial Tin Mines - Bolivia

Rock Tin Mines - Indonesia

Copper Oxide - Russia

Tantalum Niobium Ore - Nigeria

Lithium Mines - Brazil

Kaolin Mine - Uganda

Lead Zinc Mine - Morocco

Manganese Ore - Kenya

Hematite - South Africa

FAQ

What water depth is required for operation?

The dredge works best in 0.5-3 meters of water. Shallow areas may require adjusting the suction hose length, while deeper waters benefit from its powerful vacuum.

How does it handle rocky terrain?

The suction nozzle features a hardened steel tip to resist abrasion. A optional rock trap attachment prevents large stones from damaging the pump.

Is it suitable for saltwater environments?

Yes, all metal components are treated with anti-corrosion coatings, making it safe for use in coastal areas and brackish waters.

Portable 4" Gold Dredge for Placer Mining

Work Principle

Venturi Suction System

Classification & Concentration

Portable Mobility

Product Advantages

Superior Gold Recovery Rate

Energy Efficiency

Easy Maintenance

Technical Parameters

Successful Cases

FAQ

What water depth is required for operation?

How does it handle rocky terrain?

Is it suitable for saltwater environments?

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