1. PAINPOINT DRIVEN OPENING

Managing a gold mining operation means confronting persistent challenges that directly erode profitability. When it comes to material handling and processing, common pain points include:
High Downtime from Blockages: Unprocessed oversize material and claybound aggregates can halt entire processing circuits, costing thousands per hour in lost production.
Inefficient Liberation of Gold: Inadequate scrubbing and breaking of ore leads to poor gold exposure, resulting in significant recoverable gold reporting to tailings.
Excessive Water & Energy Consumption: Inefficient washing and screening processes inflate operational costs for water procurement, pumping, and treatment.
High Maintenance Burden: Equipment not designed for abrasive feed materials suffers rapid wear on critical components, leading to frequent shutdowns and high parts replacement costs.
Inconsistent Feed to Downstream Processes: Variable particle size distribution from primary processing creates instability in milling and gravity circuits, reducing overall recovery efficiency.

Are you seeking a solution to reduce circuit downtime, improve gold liberation rates, and lower your cost per ton processed?

2. PRODUCT OVERVIEW: SCRUBBER / TROMMEL FOR GOLD BEARING ALLUVIAL & HARD ROCK ORE

A heavyduty scrubber or trommel is a core piece of premilling equipment designed for the aggressive preparation of goldbearing ore. Its function is to break down claybound aggregates, scrub deleterious materials from rock surfaces, and classify material by size to prepare an optimal feed for downstream concentration.

Operational Workflow:
1. Feed Introduction: Runofmine (ROM) or alluvial ore is conveyed into the rotating drum section.
2. Aggressive Scrubbing & Attrition: Internal lifters cascade the material; the impact between rock particles and against reinforced scrubber bars breaks down clays and soft aggregates.
3. Sizing & Classification: As material travels through the drum, undersized material passes through screen apertures (trommel) or grates (scrubber).
4. Product Separation: Oversize (+10mm to +50mm, depending on screen selection) exits the drum discharge end for further crushing. The undersize slurry reports to vibrating screens or direct pump sumps for subsequent gold recovery processes.

Application Scope: Ideal for alluvial/eluvial deposits with sticky clays, weathered saprolite ore, and hard rock ores requiring prewashing and classification before cyanidation or gravity circuits.

Limitations: Not a substitute for primary crushing of competent hard rock; feed size must be compatible with drum diameter. Water availability is a prerequisite for effective operation.

3. CORE FEATURES

HeavyDuty Drum Design | Technical Basis: Highstress finite element analysis (FEA) | Operational Benefit: Withstands impact loading from large feed material without deformation | ROI Impact: Extended structural life reduces capital replacement cycles by years

AbrasionResistant Liner System | Technical Basis: Interchangeable NiHard or AR400 steel lifters and screen sections | Operational Benefit: Critical wear components can be replaced individually during scheduled maintenance | ROI Impact: Lowers liner cost per ton by up to 40% compared to monolithic designs

Variable Speed Drive System | Technical Basis: Hydraulic or electromechanical drive with PLC control | Operational Benefit: Operators can adjust rotational speed to match feed consistency from sticky clay to gravel | ROI Impact: Optimizes throughput and liberation efficiency across varying deposit zones

Integrated Water Spray Bars | Technical Basis: Highpressure manifold with adjustable nozzles | Operational Benefit: Provides positive water curtain for screen cleaning and effective slurry formation | ROI Impact: Reduces water recirculation volume by ensuring efficient solids transport

Modular Screen Section Design | Technical Basis: Boltin panel construction with multiple aperture options | Operational Benefit: Screen panel configuration can be changed infield to adapt to changing ore characteristics | ROI Impact: Eliminates need for multiple dedicated machines, maximizing asset utilization

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard | This Scrubber/Trommel Solution | Advantage |
| : | : | : | : |
| Availability / Uptime | 8590% (scheduled & unscheduled) | 9496% documented field average | +6% improvement |
| Liner Wear Life| 80,000 120,000 tons per set (varying ore)| 150,000 200,000 tons per set (equivalent ore)| +60% improvement |
| Clay Disintegration Efficiency| Estimated 7080% liberation| Field data shows >92% liberation on measured samples| +15% improvement |
| Specific Water Consumption| 3.0 4.0 m³/ton processed| Engineered spray system achieves 2.2 2.8 m³/ton| ~25% reduction |
| Power Consumption per Ton| Baseline of 1.0 kWh/t (site dependent)| Optimized drive train averages 0.82 kWh/t (site dependent)| ~18% reduction |

5. TECHNICAL SPECIFICATIONS

Model Range Capacity: From pilotscale 20 TPH units to productionscale units exceeding 300 TPH.
Power Requirements: Dependent on model; typical range from 75 kW to over 350 kW. Configured for hightorque startup conditions.
Material Specifications: Drum shell constructed from hightensile steel plate; internal lifters from NiHard cast iron or AR400/450 steel; screen panels in abrasionresistant steels.
Physical Dimensions (Example Model): Drum diameter: 2.4m; Drum length: 6.0m; Total installed length: ~12m; Approximate weight: 45 tonnes.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +50°C; electrical components rated for appropriate ingress protection (IP) levels against dust and moisture.

6. APPLICATION SCENARIOS

Alluvial Placer Operation in West Africa | Challenge: Highclay content was blinding trommel screens within hours, requiring daily manual cleaning and causing severe throughput loss.| Solution: Implementation of a heavyduty scrubber with internal rubber deflectors and highpressure spray bars configured for maximum attrition.| Results: Screen blinding eliminated; operational uptime increased from 93%; monthly throughput increased by an average of 8 ,500 tons without additional crew.

Weathered Hard Rock Mine in South America | Challenge:: Poor gold recovery (~65%) due to inefficient liberation of fine gold locked in oxide/saprolite matrix before CIL circuit.| Solution:: Installation of a primary scrubber ahead of the existing crushing circuit to aggressively break down saprolite.| Results:: Head grade reporting to mill showed improved gold exposure; overall plant recovery improved by 11 percentage points within two months of commissioning.

7 . COMMERCIAL CONSIDERATIONS

Equipment is offered in standardized tiers based on throughput capacity (e.g., 150 TPH ), with corresponding price structures . Optional features include:
Onboard diesel power packs
Advanced bearing condition monitoring systems
Customizable chute work for plant integration

Service packages range from basic commissioning support up through comprehensive multiyear maintenance agreements with guaranteed parts availability . Financing options include capital lease , operating lease , renttoown structures tailored typically over 3660 month terms .

FAQ

1 . Is this equipment compatible with our existing crushing and screening plant?
Yes . The scrubber/trommel is designed as a modular addition . Our engineering team will review your plant layout conveyor heights slurry handling requirements provide detailed interface drawings .

2 . What is the expected impact on our downstream processes?
You should expect a more consistent washed feed with reduced clay content . This typically leads t o improved performance in gravity concentrators reduced reagent consumption in leaching circuits lower overall slimes handling volume .

3 . What are the critical spare parts we should stock?
We recommend an initial spare parts kit including drive motor coupling elements specific liner bolts/nuts one set of spray bar nozzles one complete lifter assembly f or each side .

4 . How long does installation typically take?
For a complete skidmounted unit including feed/discharge conveyors installation by experienced crews typically requires 714 days depending on site conditions .

5 . What are your payment terms f or new equipment?
Standard commercial terms are 30 % deposit upon order 60 % prior t o shipment 10 % upon completion o f commissioning .

6 . Can you provide performance guarantees?
Yes . We offer guaranteed minimum throughput capacity maximum power consumption wear life f or key liner components based on your provided ore characterization data .

7 . Do you offer operator training?
Comprehensive operator training covering startup/shutdown procedures daily inspections troubleshooting guides i s included with every installation