Placer Gold Washing Plant
Zhengzhou Sinolion Machinery Co., Ltd. is one of the most credible manufacturers and suppliers of placer gold washing plant in China. Please feel free to buy high quality placer gold washing plant for sale here from our factory. Good service and reasonable price are available.
Replacing outdated, labor-intensive panning methods with modern alluvial gold processing equipment allows mining operations to achieve significantly larger processing capacities and gold recovery rates exceeding 90%. Because physical gravity separation consumes less energy and avoids chemical leaching reagents, the process is environmentally friendly and generates zero secondary chemical pollution.
Because placer gold particle sizes range from large nuggets down to fine flour gold smaller than 200 mesh, a wash plant must break down clay matrixes, reject oversized waste rock, and classify material into optimal size fractions before concentration.
Technical Specifications
| Item | Specification |
|---|---|
| Length | Standard: 156" (3,962mm) / EX: 204" (5,181mm) |
| Width | 90" (2,286mm) |
| Height | 90" (2,286mm) |
| Weight | 6,500 lbs (2,949 kg) - depending on options |
| Scrubber Barrel Length | Standard: 48" (1,219mm) / EX: 96" (2,438mm) |
| Screen Barrel Length | 60" (1,524mm) |
| Barrel Diameter | 36" (914mm) |
| Barrel Speed (on-board VFD, fully adjustable) | 9–13 RPM |
| Gas Drive | Honda / Kohler / Briggs, electric start |
| Electric Drive | 230V 3-phase, 50/60 Hz compatible, min. 15 kW generator |
| Diesel Drive | Hatz / Yanmar / Kohler engine |
| Water Requirements | 600+ US GPM preferred |
| Hopper Feed Dimensions | L 96" × W 78" × H 12" (2,438 × 1,676 × 304mm); grizzly bar spacing 5" (127mm) |
| Gold Sluice Dimensions | 12' L × 36" W (3,657 × 914mm) standard, other options available |
| Optional Diamond / Gemstone Pan-American Duplex Jig | 42" × 42"; capacity 20–30 yd³/hr (see full specs below) |
| Wheeled / Skid Mounted | Available upon request |
Core Operational Stages of a Placer Wash Plant
A placer wash plant functions as a continuous mechanical classification system. The processing circuit follows a logical progression from raw material intake to final clean-up.
Stage 1: Washing & Screening (Gold Wash Trommel):
Raw alluvial ore is fed into the Gold Wash Trommel. High-pressure water jets disintegrate sticky clay matrices, while the rotating inner screen classifies materials by size, sending the target undersized fraction to the recovery circuits.
Stage 2: Primary Gravity Separation (Sluice Box & Gold Concentrator):
The screened slurry flows directly across the Sluice Box to immediately trap heavy coarse gold on specialized mats via gravity. Concurrently, the finer slurry fractions pass through the Gold Concentrator, utilizing high centrifugal G-force to capture elusive micron-sized gold particles.
Stage 3: Secondary Fine Cleaning (Shaker Table):
Concentrates periodically collected from the sluice mats and centrifugal bowls are discharged onto the Shaker Table. Through asymmetrical reciprocating movement and water stratification, high-grade gold sands are precisely separated from remaining heavy minerals and iron sands.
Stage 4: Amalgamation (Mercury Amalgamator):
The highly enriched gold grains from the shaker table are fed into the Mercury Amalgamator. This machine ensures intimate, high-efficiency contact between gold surfaces and mercury to form a solid gold-mercury amalgam paste while discharging light silicates.
Stage 5: Mercury Distillation & Recovery (Amalgam Retort):
The separated solid gold-mercury amalgam paste is placed inside the sealed Amalgam Retort. Upon heating, the mercury vaporizes and condenses back into liquid for environmental safe reuse, leaving behind pure sponge gold inside the chamber.
Stage 6: Final Smelting & Casting (Gold Melting Furnace):
The recovered sponge gold is transferred to the Gold Melting Furnace. Operating at extreme temperatures, it completely liquefies the precious metal, allowing it to be poured into custom molds to cast high-purity gold bars or commercial bullion.
Equipment Selection Matrix
Matching the right wash plant equipment to site conditions dictates overall recovery rates and operational efficiency.
| Equipment Type | Core Function | Target Gold Size | Clay Tolerance | Primary Advantage |
| Rotary Scrubber | Clay breakdown & washing | All sizes | Excellent | Completely disintegrates sticky clay clods prior to screening |
| Trommel Screen | Integrated washing & sizing | All sizes | Moderate | Combines scrubbing and sizing in a single compact drum |
| Centrifugal Concentrator | Fine gold recovery | -2mm to 400 mesh | Low (requires clean slurry) | Maximizes recovery of fine flour gold under high G-forces |
| Mineral Jig | Coarse & medium recovery | 0.5mm to 10mm | Moderate | Handles high throughput with minimal water consumption |
| Hungarian Sluice Box | Coarse gold capture | +1mm nuggets to 1mm | Low | Low capital cost, simple operation, no electrical power needed |
| Shaking Table | Final concentration | -2mm down to fine dust | Low (requires clean feed) | Delivers a visible separation line and high concentrate purity |
Wash Plant Configurations and Technical Designs
Mobile Placer Gold Washing Plants
A mobile placer gold washing plant integrates all primary classification and gravity recovery units onto a single transportable chassis. Designed for small-to-medium scale alluvial operations requiring frequent relocation, these systems offer processing capacities ranging from 20 to 150 tons per hour (TPH).
- Fully Integrated Structure: The platform unifies the feed hopper, trommel screen, water pump, generator set, centralized electrical control panel, and recovery sluice box on a heavy-duty structural frame.
- Heavy-Duty All-Terrain Chassis: Built on steel beams and equipped with six heavy-duty off-road tires. The front axle features a 180° swivel turntable, enabling flexible maneuvering across rugged and unpaved mine roads.
- Operational Stability: To eliminate vibration and support full-capacity loads during operation, the chassis is equipped with four mechanical outrigger support legs that anchor firmly to the ground.
- High-Strength Trommel Engineering: Supported by reinforced rollers and driven by a gear-side drive or chain-pulley drive system. The screen drum uses high-manganese steel woven mesh, providing anti-clogging performance, high throughput, and long service life.
- Flexible Power Options: Powered either by an independent diesel generator set with electric motors or directly by a heavy-duty diesel engine, ensuring low failure rates and simple field maintenance.
- Fine Gold Capture: The sluice box uses professional non-woven polyethylene recovery carpet, engineered to trap both coarse nuggets and fine flour gold particles.
- Economic Advantage: Low initial capital investment, reduced manual labor requirements, rapid field deployment, and a fast return on investment (ROI).
Global Customer Project Sites
Pictures of practical application cases of gold ore washing and processing plant
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Tanzania
Burkina Faso
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About Us
At Sinolion Machinery, we believe manufacturing heavy equipment is about more than just assembling steel components - it is about forging enduring partnerships and solving your most complex material extraction challenges. Located in the heart of Zhengzhou, China's premier industrial hub, we have been exporting high-performance processing systems to international markets with absolute dedication, strict precision, and relentless power.
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