1. PAINPOINT DRIVEN OPENING

Are you facing escalating operational costs and unpredictable recovery rates in your highvolume gold operation? Managing a 500 TPH feed rate presents distinct challenges that directly impact your bottom line. Inefficient washing and scrubbing can lead to significant gold losses in fines, while excessive downtime for maintenance and liner changes erodes production schedules. High water consumption not only increases costs but complicates environmental compliance. Are you struggling with consistent throughput when handling variable, claybound feed material? The financial impact is measurable: every percentage point of unrecovered material and every hour of unscheduled downtime represents a substantial loss in potential revenue. The core question for plant managers is how to achieve reliable, highvolume processing with controlled operational expenditure and maximized recovery.

2. PRODUCT OVERVIEW

This product description details a heavyduty, modular 500 TPH Gold Mining Washing Plant designed for alluvial and eluvial deposits, as well as weathered hard rock ore. This system is engineered to prepare feed material for downstream gravity separation or leaching processes by effectively liberating gold from waste gangue.

Operational Workflow:
1. Primary Feed & Scalping: Runofmine (ROM) material is fed via dump truck or loader into a robust grizzly feeder, removing oversized rocks (+150mm) before entry.
2. Aggressive Scrubbing & Attrition: Material enters a largediameter, longlength rotary scrubber, where the intense tumbling action breaks down clay matrices and cemented aggregates.
3. Primary Screening & Waste Removal: The scrubbed slurry discharges onto a primary vibrating screen, separating coarse waste gravels (+10mm) from the valuable fines slurry.
4. Secondary Screening & Sizing: The undersize slurry may be routed to a secondary screen deck for further classification, ensuring optimal sizing for downstream concentrators (e.g., centrifugal concentrators, sluices).
5. Slurry Distribution: Correctly sized material is efficiently distributed to the downstream recovery circuit via pumps and distributors.

Application Scope & Limitations:
Scope: Ideal for hightonnage placer operations, alluvial gold projects, and processing of weathered saprolite material where gold liberation requires aggressive attrition.
Limitations: Not suitable for processing unweathered hard rock ore requiring crushing. Performance is highly dependent on feed material characteristics such as clay content and rock abrasiveness. Adequate water supply and slurry management infrastructure are prerequisites.

3. CORE FEATURES

HeavyDuty Rotary Scrubber | Technical Basis: High torque drive system with reinforced lifters | Operational Benefit: Consistent breakdown of tough clay bands and cemented gravels under full load, preventing drum bogging | ROI Impact: Maintains design throughput of 500 TPH, ensuring daily tonnage targets are met reliably.

Modular Skid Design | Technical Basis: Preassembled, steelframed modules with integrated walkways | Operational Benefit: Reduces onsite installation time by up to 60% versus traditional field fabrication | ROI Impact: Lowers capital installation costs and accelerates timetoproduction by several weeks.

Polyurethane Screen Media | Technical Basis: Abrasionresistant PU panels with antiblinding technology | Operational Benefit: Extends screen panel life by 35x over steel wire mesh in abrasive conditions, reducing changeout frequency | ROI Impact: Cuts longterm consumable costs and associated labor downtime.

Intelligent Water Recycling Integration | Technical Basis: Designed for closedloop integration with thickeners and settling ponds | Operational Benefit: Can reduce fresh water makeup requirements by 7080% through internal recycling | ROI Impact: Drastically lowers water procurement costs and minimizes environmental licensing complexity.

Centralized Greasing & Monitoring Points | Technical Basis: Manifolded lubrication lines to all major bearings with accessible inspection ports | Operational Benefit: Enables routine maintenance in under two hours without major disassembly, enhancing plant availability | ROI Impact: Directly increases annual operating hours and equipment lifespan.

Adjustable Scrubber Retention Time | Technical Basis: Variable frequency drive (VFD) on scrubber motor coupled with adjustable lifter configuration | Operational Benefit: Operators can tune processing intensity from 1 to 4 minutes based on realtime feed clay content | ROI Impact: Optimizes gold liberation efficiency across varying deposit zones, maximizing overall recovery percentage.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (500 TPH Plant) | Our 500 TPH Gold Mining Washing Plant Solution | Advantage (% Improvement) |
| : | : | : | : |
| Annual Availability | 8588% (including scheduled maintenance) | 9294% (design target) | +6% More Uptime |
| Water Consumption per Ton| ~1.5 m³/ton (open circuit) | <0.4 m³/ton (with recycling system) |73% Water Use |
| Screen Media Lifespan| Steel Mesh: 8001,200 hours
Rubber Panels: ~2,000 hours| Polyurethane Panels:
3,500 5,000 hours| +250% vs Rubber |
| Installation & Commissioning Time| FieldBuilt:
1418 weeks| Modular Skid Design:
810 weeks|40% Time Savings|
| Scrubber Drive Overload Events| Common with fixedspeed drives under variable load| VFD Control with torque monitoring virtually eliminates motor overload trips |95% Events|

5. TECHNICAL SPECIFICATIONS

Design Capacity: 500 metric tons per hour (TPH) of 150mm feed material at 1.8 t/m³ bulk density.
Power Requirements: Total installed power approximately 750 kW. Primary scrubber drive: 400 kW VFDcontrolled electric motor.
Material Specifications:
Scrubber Drum Shell & Lifters: AR400 AbrasionResistant Steel.
Chute Work & Hopper Liners: 10mm Hardox®450.
Structural Steel Frame: S355JR grade.
Physical Dimensions (Modular):
Scrubber Module (LxWxH): ~22m x 6m x 5m.
Primary Screen Module:~12m x 5m x 6m.
Feed Hopper Module:~8m x 7m x 6m.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +50°C. Dust suppression spray systems are standard at all transfer points.

6. APPLICATION SCENARIOS

West African Alluvial Gold Operation

Challenge A largescale placer mine was experiencing inconsistent recovery rates below 75%, attributed to inefficient clay removal blinding their screening system and gravity circuit.
Solution Implementation of a tailored modular washing plant featuring an extended retention scrubber section followed by nonblinding polyurethane screens.
Results Field data shows consistent recovery rates improved to 92%. The plant achieved an average throughput of >480 TPH over a sixmonth period with two scheduled maintenance stops totaling less than five days downtime.

Southeast Asian Eluvial Saprolite Project

Challenge Processing highly variable weathered ore resulted in frequent scrubber drum bogging events due to sticky clays; this caused weekly production stoppages averaging eight hours each for manual cleaning.
Solution A VFDdriven heavyduty scrubber was installed alongside highpressure internal spray bars designed specifically for cohesive materials.
Results Bogging events were eliminated entirely within the first month of operation; this contributed directly to an additional estimated $2M USD in processed material over the subsequent year due to sustained throughput at design capacity.

7 COMMERCIAL CONSIDERATIONS

Pricing Tiers
A base model skidmounted washing plant starts at approximately $X.X million USD FOB factory. A fully optimized package including primary screening units starts at approximately $X.X million USD FOB factory. Premium configurations featuring advanced instrumentation packages start at approximately $X.X million USD FOB factory. (Note indicative pricing will vary based on final specifications).

Optional Features
Key upgrades include:
Integrated water recycling/thickener package
Advanced process control system PLC/SCADA interface
Onboard diesel generator power pack
Spare parts starter kits

Service Packages
Standard warranty covers defects in materials/workmanship for one year post commissioning Extended service contracts available covering scheduled inspections parts discounts priority technical support

Financing Options Available through partner institutions including equipment leasing structures milestonebased project finance solutions

FAQ

What upstream equipment is required?
The washing plant requires correctly sized ROM feed typically via dump truck or frontend loader A primary crushing stage may be necessary if runofmine material exceeds mm

How does this plant integrate with our existing gravity recovery circuit?
The plant is designed as a preparation stage It delivers optimally sized cleaned slurry via pump or conveyor Standard discharge points ensure compatibility with most sluice jig or centrifugal concentrator systems

What are the ongoing operational consumables?
Primary consumables are polyurethane screen panels wear liners on lifters/chutes grease electricity water Replacement intervals depend entirely on feedstock abrasiveness but typical screen life ranges from months

Can we visit an operational reference site?
Yes subject to operator confidentiality agreements we can arrange site visits for qualified buyers Several reference installations operate in Africa South America Asia

What delivery lead time can we expect?
For standard designs lead time from order confirmation to exworks shipment is typically months Custom configurations may require additional engineering time