We offer a comprehensive one-stop sourcing solution across construction machinery, agricultural and forestry equipment, marine and power systems, hydraulic components, and new energy devices, all customizable to meet diverse project needs.
Qingzhou Mingxu Supply Chain Co., Ltd. supplies Gold-concentrating Centrifugal Separator for gravity separation of fine gold from placer deposits and crushed rock ore. The equipment uses a wear-resistant rotating drum to separate heavier gold particles from lighter gangue material, providing a straightforward method for gold recovery in small and medium mining operations.
The concentrator is available in standard configurations, with drum size, processing capacity, and water supply requirements adjustable at the order stage. Bulk orders and complete gold processing line packages can be arranged for mining projects.
| Item | Description |
|---|---|
| Separation Principle | Centrifugal gravity separation |
| Drum Material | Wear-resistant lining (replaceable) |
| Feed Method | Slurry pump or gravity feed |
| Drive Type | Electric motor with variable speed control |
| Water Requirement | Continuous water supply for flushing and enrichment |
| Control System | Manual or semi-automatic operation |
| Customization | Drum diameter, motor power, and water system adjustable based on site conditions |
Gold-bearing slurry is fed into the rotating centrifugal drum. As the drum spins at high speed, centrifugal force pushes heavier gold particles against the wear-resistant lining, while lighter silt and water flow out through the overflow. When enough concentrate has accumulated on the drum wall, the feed is stopped and high-pressure water is used to flush the collected gold into a concentrate container, completing the separation cycle.
Layered separation under centrifugal force. The concentrator uses centrifugal force to create a strong artificial gravity field inside the rotating drum. Under this condition, heavier gold particles migrate rapidly to the drum wall, while lighter sand and clay remain in the inner water layer and are discharged through the overflow. This layered arrangement allows the machine to handle a relatively high feed rate while still capturing fine gold that would otherwise be washed away in a conventional sluice.
Fine gold and flake gold recovery. The drum speed and water flow can be adjusted to target specific particle sizes. For micro fine gold (down to approximately 0.074 mm) and flake gold, the drum is operated at a higher speed with a moderate water flow to increase the centrifugal force acting on the particles. The wear-resistant lining inside the drum is also part of the capture mechanism: its surface is designed to retain fine particles without allowing them to be re-entrained by the water flow. Field tests have shown that with the correct settings, the machine can recover a significant portion of fine gold that is normally lost in traditional gravity equipment.
Replaceable wear-resistant lining. The inner surface of the drum is protected by a replaceable lining made of abrasion-resistant material. The lining resists the erosive effect of sand and fine slurry, and can be changed when worn. This extends the service life of the drum body itself and keeps maintenance costs low. The lining is installed in sections, allowing partial replacement if only one area is heavily worn.
High-speed rotation stability. The drum is mounted on a balanced shaft assembly with heavy-duty bearings. The drive system includes a speed control unit, allowing the operator to set the rotation speed according to the feed material and gold particle size. To prevent vibration and premature bearing wear, the rotating assembly is dynamically balanced at the factory, and the base frame is designed to absorb operational vibrations. The motor and drive components are protected by a safety cover, and the entire rotating unit is supported by a rigid steel frame to keep the drum stable during long periods of continuous operation.
Before startup: Inspect the motor, water supply pipeline, and drum wear lining. Remove any internal debris to ensure unobstructed flow. Start the machine without load and turn on the water supply. Once speed and water pressure are stable, begin feeding the gold-bearing slurry evenly.
During operation: Monitor slurry concentration and water flow, adjusting the feed volume to maintain separation efficiency. Avoid overloading the drum with excessive solids.
Enrichment and shutdown: Stop feeding and turn off the motor. Flush the drum with high-pressure water to collect gold concentrate. Clean residual sediment from inside the drum, dry the equipment, and complete maintenance before storage.
1. Fine gold recovery. The centrifugal force stratification allows the machine to capture micro fine gold and flake gold that may be lost with conventional sluice or jig methods, improving overall recovery rate.
2. Broad material compatibility. The concentrator can process river placer gold, tailings for secondary recovery, and crushed rock ore. It is suitable for land-based washing plants and ship-mounted mineral processing.
3. Wear-resistant drum lining. The replaceable lining is designed to withstand abrasive slurry and can be changed when worn, reducing long-term maintenance cost.
4. Simple operation. The machine requires minimal operator training and can be integrated into existing gold washing lines with standard water and power connections.
1. River placer gold beneficiation: primary concentration of gold from river sand and gravel.
2. Rock gold processing: enrichment of gold after crushing and milling of ore.
3. Tailings reprocessing: recovery of residual gold from old tailings dumps.
4. Small and medium gold mining projects: use as a standalone unit or part of a complete washing plant.
The Gold-concentrating Centrifugal Separator is covered by a 12-month or 1,000-working-hour warranty, whichever occurs first. Wear parts such as the drum lining and seals are not included in the free warranty. Replacement parts can be supplied; freight and installation labor are the customer's responsibility.
Q1: What is the typical feed particle size range for this concentrator?
A1: The Gold-concentrating Centrifugal Separator is effective for gold particles down to approximately 0.074 mm. For very fine gold below this size, pre-classification or additional recovery stages may be required. Feed particle size should be discussed during configuration to select the appropriate drum speed and lining type.
Q2: Can the concentrator be used as a standalone unit or only in a complete line?
A2: It can be used both ways. The concentrator works as a standalone unit when fed by a slurry pump, or it can be integrated into a larger washing circuit with screens, sluices, and shaking tables. For small operations, a single unit with a water pump is often sufficient.
Q3: What water pressure is needed for the flushing cycle?
A3: The required water pressure depends on the drum diameter and lining type, typically between 0.2 and 0.4 MPa. A clean water supply free of coarse particles is recommended to avoid clogging the spray nozzles.
Address
West end of Yadong Street, Qingzhou Economic Development Zone, China
Tel
