Headline: HighCapacity Alluvial Gold Recovery: The ODM 500 TPH Washing Plant for IndustrialScale Operations

Subheadline: Engineered for continuous throughput, minimal downtime, and maximum gold liberation in highclay, highgravel deposits.

Is Your Current Gold Recovery System Costing You 1520% of Your Yield?

You are managing a highvolume alluvial operation. You face the daily challenge of processing material with high clay content that clogs screens and reduces trommel efficiency. You see your recovery rates drop when dealing with cemented gravels, and you calculate the cost of unscheduled downtime for cleaning—often exceeding $2,500 per hour in lost production and labor.

You need a system that can handle 500 tons per hour of runofmine feed without constant operator intervention. You require a plant that liberates gold at the first stage of washing, not after the material has passed through multiple, inefficient stages. The question is: can your current washing plant maintain 95%+ availability on a 500 TPH feed with 30% clay content?

The ODM 500 TPH Gold Mining Washing Plant is designed to answer that question with a specific engineering focus on highenergy scrubbing and efficient screening.

Product Overview: The ODM 500 TPH Washing Plant

This is a mobile or semimobile, modular washing and screening plant rated for a nominal feed capacity of 500 metric tons per hour. It is a primary recovery solution for alluvial gold, placer deposits, and eluvial material.

Operational Workflow:
1. Feed & Grizzly: Runofmine material is fed via excavator or loader into a heavyduty vibrating grizzly feeder. Oversize (+150mm) is scalped and rejected.
2. HighEnergy Scrubbing: The 150mm material enters a dualdrive, heavyduty rotary scrubber. High water pressure and internal lifters create a turbulent slurry, breaking down clay balls and dispersing conglomerates.
3. Sizing & Screening: The slurry passes through a multideck vibrating screen system (typically 20mm and 6mm apertures). This separates the +6mm gravel (waste) from the 6mm fines (concentrate).
4. Concentration: The 6mm slurry is directed to a downstream recovery circuit (e.g., jigs, spirals, or centrifugal concentrators) which is integrated into the plant's design.

Application Scope:

• Primary: Alluvial gold, eluvial gold, and weathered hardrock deposits.
• Secondary: Diamond recovery, tin/tantalum processing, and aggregate washing.
• Limitations: Not designed for dry processing or hardrock crushing. Requires a consistent water supply (approx. 8001200 m³/hour).

Core Features: Engineering for Uptime and Recovery

HighEnergy DualDrive Scrubber | Technical Basis: Counterrotating drum with highlift, wearresistant liners | Operational Benefit: Reduces clay retention time by 40% compared to singledrive units, ensuring complete particle liberation | ROI Impact: Eliminates secondary scrubbing passes, saving $0.15 $0.25 per ton in energy and water costs



HeavyDuty Vibrating Grizzly Feeder | Technical Basis: Variable speed drive with stepped grizzly bars (150mm gap) | Operational Benefit: Prevents oversize rock from entering the scrubber, protecting internal liners and reducing wear | ROI Impact: Extends scrubber liner life by 3050%, reducing annual maintenance costs by an estimated $18,000 $25,000

Modular Screen Deck System | Technical Basis: Polyurethane screen panels with a quickchange tensioning system | Operational Benefit: Screen deck changeover in under 2 hours vs. 68 hours for bolted steel systems | ROI Impact: Reduces downtime for product specification changes, increasing annual operating hours by 150200 hours

Integrated Slurry Distribution Box | Technical Basis: Adjustable weir and splitter gates | Operational Benefit: Allows the operator to divert slurry to different recovery circuits (jigs vs. spirals) without stopping the plant | ROI Impact: Enables realtime optimization of recovery based on feed grade, improving recovery by 25% in variable deposits

HighPressure Water Injection System | Technical Basis: 12bar rated nozzles with a selfcleaning filter manifold | Operational Benefit: Maintains consistent water pressure at the scrubber inlet, even with variable pump output | ROI Impact: Reduces water consumption by 15% through optimized jet placement, lowering pumping costs

Centralized Hydraulic Drive System | Technical Basis: Single hydraulic power pack driving scrubber, feeder, and conveyors | Operational Benefit: Eliminates multiple electric motors and gearboxes, reducing electrical failure points by 60% | ROI Impact: Lower spare parts inventory and simplified troubleshooting, reducing mean time to repair (MTTR) by 35%

Competitive Advantages: Performance Metrics

| Performance Metric | Industry Standard (500 TPH Plant) | ODM 500 TPH Solution | Advantage (% Improvement) |
| : | : | : | : |
| Clay Breakdown Efficiency | 8590% (single pass) | 9799% (single pass) | 815% higher liberation |
| Screen Deck Changeover Time | 68 hours | 1.52 hours | 7075% faster |
| Water Consumption (per ton) | 2.5 3.0 m³/ton | 1.8 2.2 m³/ton | 2027% lower water usage |
| Uptime (scheduled maintenance) | 8588% | 9295% | 58% higher availability |
| Wear Part Life (Scrubber Liners) | 3,000 4,000 hours | 5,000 6,500 hours | 4060% longer lifespan |
| Power Consumption (per ton) | 0.8 1.0 kWh/ton | 0.6 0.75 kWh/ton | 2025% lower energy cost |

Technical Specifications (ODM 500 TPH Model)

| Parameter | Specification |
| : | : |
| Nominal Feed Capacity | 500 TPH (based on 1.6 t/m³ bulk density) |
| Maximum Feed Size | 600 mm (with grizzly) |
| Scrubber Dimensions | 3.0m diameter x 12.0m length |
| Screen Deck Area | 18 m² (two decks) |
| Power Requirement | 350 450 kW (depending on clay content) |
| Water Requirement | 800 1,200 m³/hour at 46 bar |
| Operating Weight | 85,000 95,000 kg |
| Transport Dimensions | 18m (L) x 3.5m (W) x 4.2m (H) (per module) |
| Operating Temperature | 10°C to 45°C (with optional coldweather package) |
| Material of Construction | Main frame: S355 structural steel; Wear parts: AR400/AR500, Polyurethane |

Application Scenarios: Field Results

Scenario 1: HighClay Alluvial Deposit in West Africa | Challenge: A client was processing material with 3540% clay content. Their existing plant required a 2hour shutdown every 8 hours to clear clay buildup in the scrubber and screens. | Solution: Installation of the ODM 500 TPH plant with the highenergy dualdrive scrubber and selfcleaning screen system. | Results: Clay buildup eliminated. Plant achieved 93% uptime in the first month. Recovery of fine gold (0.3mm) increased by 12% due to better liberation.

Scenario 2: Remote River Terrace Operation in South America | Challenge: The site had limited water availability and a high cost for dieselgenerated power. The existing plant consumed 3.2 m³/ton of water and 1.1 kWh/ton. | Solution: The ODM 500 TPH plant with the highpressure injection system and hydraulic drive. | Results: Water consumption reduced to 2.0 m³/ton, saving 1.2 million m³ of water annually. Power consumption dropped to 0.7 kWh/ton, reducing fuel costs by $180,000 per year.

Scenario 3: Contract Mining for a Major Gold Producer | Challenge: The contractor needed a plant that could be mobilized to three different sites within a 12month period. The plant had to handle both gravel and cemented laterite. | Solution: The modular ODM 500 TPH plant, designed for containerized transport and rapid reassembly. | Results: Sitetosite relocation completed in 14 days (including disassembly, transport, and reassembly). The plant processed 1.2 million tons over 10 months with 91% mechanical availability.

Commercial Considerations

Equipment Pricing Tiers:

• Standard Configuration (Mobile): $1,200,000 $1,500,000 (includes feeder, scrubber, screen, conveyors, and control panel).
• Integrated Recovery Package: $1,800,000 $2,200,000 (includes jigs, centrifugal concentrators, and tailings management system).
• Turnkey Solution: $2,500,000 $3,000,000 (includes all above, plus piping, electrical, and commissioning support).

Optional Features:

• ColdWeather Package: Heated bearings, insulated water lines, and synthetic lubricants (+$85,000).
• Remote Monitoring System: Realtime data on power draw, water flow, and screen vibration (+$45,000).
• Wear Part Upgrade: Full ceramiclined scrubber and screen decks (+$120,000).

Service Packages:

• Standard Warranty: 12 months or 2,000 operating hours.
• Extended Warranty: 24 months with scheduled maintenance visits (annual cost: $35,000).
• Performance Guarantee: Contractual guarantee of 92% uptime and 95% clay breakdown efficiency (subject to feed conditions).

Financing Options:

• Direct Purchase: 30% deposit, 70% on delivery.
• LeasetoOwn: 3660 month terms with 10% buyout option.
• Operating Lease: Monthly payments based on throughput (e.g., $0.50 per ton processed).

Frequently Asked Questions

Q1: Can the ODM 500 TPH plant handle material with high clay content (over 40%)?
Yes. The dualdrive scrubber is specifically engineered for highclay environments. Field data shows 97% breakdown efficiency in material with up to 45% clay content. For extreme clays (50%+), we recommend a prewetting conveyor or a longer retention time scrubber.

Q2: What is the typical delivery lead time?
Standard configuration: 1620 weeks from order confirmation. Custom configurations with the integrated recovery package: 2428 weeks.

Q3: Does the plant require a concrete foundation?
No. The plant is designed for a compacted gravel pad. For semimobile applications, a steel skid base is provided. For permanent installations, a concrete foundation is recommended but not mandatory.

Q4: What is the expected lifespan of the wear parts?
Scrubber liners (AR500): 5,0006,500 hours. Screen panels (polyurethane): 3,0004,000 hours. Grizzly bars: 8,00010,000 hours. Actual lifespan depends on feed abrasiveness and clay content.

Q5: Can the plant be integrated with an existing recovery circuit?
Yes. The plant is designed with a standard slurry discharge point (typically a 12inch flanged outlet). We provide a technical integration guide for connecting to jigs, spirals, or centrifugal concentrators.

Q6: What are the power and water requirements for installation?
Power: 350450 kW, 3phase, 380480V, 50/60 Hz. Water: 8001,200 m³/hour at 46 bar. We recommend a dedicated water supply line with a minimum 10inch diameter.

Q7: Is operator training included?
Yes. We provide a 3day onsite training program for up to 4 operators and 2 maintenance technicians. This covers startup, shutdown, routine maintenance, and troubleshooting.