Pasgemaak 500 TPH Goudmynwasaanleg: Engineering for HighVolume Alluvial Recovery

Die operasionele uitdaging: When Throughput Targets Meet Recovery Realities

For any operation processing 500 tons per hour of goldbearing material, the margin for error is measured in ounces lost per day. Your plant managers face a specific set of constraints that directly impact your bottom line:

• Feed variability: A 10% fluctuation in clay content can reduce gold recovery by 1520% if your washing circuit lacks the shear force to break down agglomerates. By 500 TPH, wat verteenwoordig 50 tons per hour of inadequately liberated material—and lost revenue.
• Waterbestuur: A conventional washing plant at this capacity consumes 2,5003,500 kubieke meter water per uur. In regions where water rights are capped or seasonal, this becomes a production ceiling, not a technical detail.
• Downtime economics: By 500 TPH, every hour of unscheduled downtime represents 500 tons of unprocessed feed. If your ore grade averages 0.5 g/t, dit wil sê 8 troy ounces lost per hour—approximately $19,200 at current spot prices.
• Slimes handling: A poorly designed washing circuit produces 3040% slimes content that must be managed. Inefficient slimes removal clogs downstream equipment, verhoging van onderhoudskoste met 'n geraamde $0.08$0.12 per ton verwerk.
• Recovery efficiency: Standard washing plants without optimized flow distribution lose 58% van fyn goud (0.3mm) to tailings. By 500 TPH with a 0.5 g/t feed grade, dit verteenwoordig 0.40.6 ounces per hour in unrecovered values.



The question is not whether your operation needs a 500 TPH washing plant—it is whether your washing plant is engineered to maximize recovery at that throughput without becoming a maintenance liability.

Produk Oorsig: The Custom 500 TPH Goudmynwasaanleg

This is a fully integrated, skidmounted or modular washing system designed specifically for highvolume alluvial gold recovery. The plant combines scrubbing, vertoning, and gravity concentration into a single continuous process train, engineered for 24/7 operation in remote field conditions.

Operasionele werkvloei

1. Voer Hopper & Grizzly: Afloopmyn materiaal (tot 600 mm) is loaded into a heavyduty hopper with a vibrating grizzly deck. Oormaat (+150mm) is rejected to a side conveyor; undersize reports to the scrubber feed.
2. Roterende Trommel Skrop: Material enters a 3.2m diameter x 8.5m long scrubber with dualstage internal lifters. Hoëdruk waterstrale (810 kroeg) and aggressive tumbling action break down clay agglomerates and liberate gold particles.
3. Siftingsmodule: Scrubber discharge passes through a 12mm punch plate screen section, followed by a 3mm polyurethane screen deck. The +3mm fraction is conveyed to waste; the 3mm fraction reports to the concentrator feed sump.
4. Primêre konsentrasie: The 3mm slurry is pumped to a bank of 8 industrial jigs (or optional Knelson/centrifugal concentrators) operating in parallel. Jig concentrate is collected in a holding tank for batch retreatment.
5. Slimes Management: Tailings from the concentrator flow to a hydrocyclone cluster (6 x 15inch cyclones). The underflow reports to a dewatering screen; overflow reports to a thickener or settling pond. Recovered water is recycled to the scrubber.

Toepassingsomvang

Geskik vir: Alluviale goudafsettings, weathered saprolite ores, eluviale neerslae, and old tailings retreatment. Handles clay contents up to 40% (with extended scrubber configuration), feed moisture up to 15%, and particle sizes up to 600mm.

Beperkings: Nie ontwerp vir harde rock nie (competent) ores requiring crushing. Recovery efficiency for ultrafine gold (75 mikrons) is reduced; a CIL circuit or intensive leach reactor may be required for maximum fine gold recovery.

Kernkenmerke

HeavyDuty Rotary Scrubber with Variable Speed Drive

Tegniese basis: 3.2m deursnee x 8,5m lengte, 22mm AR400 steel shell with replaceable internal lifters. Dual 160kW motors with hydraulic variable speed drive (014 RPM).
Bedryfsvoordeel: Adjustable retention time (24 minute) allows operators to match scrubbing intensity to feed clay content without stopping production.
ROI impak: Eliminates the need for a separate preconditioning stage, reducing capital cost by approximately 18% and reducing footprint by 30%.

HighPressure Water Injection System

Tegniese basis: 12 spray bars with 48 individually replaceable nozzles, aflewer 810 bar water pressure at 1,200 m³/hour total flow.
Bedryfsvoordeel: Ensures complete disintegration of claybound gold particles. Velddata toon a 1215% improvement in fine gold recovery compared to gravityfed systems.
ROI impak: By 500 TPH met 0.5 g/t feed grade, a 12% recovery improvement represents 0.6 ounces per hour—approximately $1,440/hour in additional revenue.

Modulêre Skid Ontwerp

Tegniese basis: All components mounted on 4 ISOstandard 40foot skids, interconnected with quickrelease couplings and plugin electrical connectors.
Bedryfsvoordeel: Site relocation can be completed in 710 days by a 6person crew with a single 100ton crane. No concrete foundations required.
ROI impak: Reduces site preparation costs by $150,000$250,000 per relocation compared to fixed installations.

DualStage Siftingstelsel

Tegniese basis: 12mm punch plate primary screen followed by 3mm polyurethane modular screen panels with selfcleaning design.
Bedryfsvoordeel: Twostage classification ensures the concentrator feed is consistently within optimal particle size range, preventing recovery losses from oversize material.
ROI impak: Extends concentrator wear part life by 3040%, reducing annual consumable costs by $45,000$60,000.

Integrated Jig Concentrator Bank

Tegniese basis: 8 x 2cell duplex jigs with 4.5m² total effective jigging area, werksaam by 120150 strokes per minute with adjustable stroke length.
Bedryfsvoordeel: Voorsien deurlopend, highcapacity concentration without the downtime associated with batch centrifugal concentrators. Accepts feed grades from 0.1 aan 10 g/t without adjustment.
ROI impak: Eliminates the need for a separate preconcentration stage, reducing plant complexity and operator training requirements.

Outomatiese beheerstelsel

Tegniese basis: PLCbased control with touchscreen HMI, monitoring feed rate, waterdruk, scrubber RPM, jig stroke frequency, and sump levels. Remote monitoring via satellite or cellular modem.
Bedryfsvoordeel: Verminder operateur ingryping deur 60%, allowing a single operator to manage the entire plant. Alerts for abnormal conditions prevent catastrophic failures.
ROI impak: Verminder arbeidskoste deur 2 operateurs per skof, spaar $180,000$240,000 annually in remote site labor costs.

HighWear Component Protection

Tegniese basis: Ceramiclined slurry piping, AR400 steel in highimpact zones, and polyurethane liners in highabrasion areas. All wear parts designed for field replacement without special tooling.
Bedryfsvoordeel: Verleng komponentlewe deur 23 times compared to standard mild steel construction. Velddata van 12 installations shows average wear part replacement intervals of 4,0006,000 bedryfsure.
ROI impak: Verminder jaarlikse instandhoudingskoste met $85,000$120,000 compared to standard construction.

Mededingende voordele

| Prestasie-metriek | Bedryfstandaard (500 TPH) | Pasgemaak 500 TPH oplossing | Voordeel |
|||||
| Goudherwinningskoers (0.3mm fraksie) | 8590% | 9497% | 79% verbetering |
| Klei-disintegrasie-doeltreffendheid | 7585% | 9598% | 1215% verbetering |
| Waterverbruik per ton | 57 m³/ton | 3.54.5 m³/ton | 3035% vermindering |
| Ongeskeduleerde stilstand | 812% van bedryfstyd | 35% van bedryfstyd | 5060% vermindering |
| Opsteltyd (hervestiging) | 2130 dae | 710 dae | 6070% vermindering |
| Operateursvereiste | 34 per skof | 12 per skof | 5060% vermindering |
| Wear Part Replacement Interval | 1,5002,500 ure | 4,0006,000 ure | 60100% verbetering |
| Slimes Content in Tailings | 2535% | 1520% | 3040% vermindering |

Tegniese spesifikasies

Capacity and Throughput

• Nominale voertempo: 500 TPH (grootmaat digtheid 1.61.8 t/m³)
• Maksimum voergrootte: 600mm (grizzly diafragma)
• Verwerkingskapasiteit: 12,000 tons per 24hour day
• Konsentraat produksie: 25 TPH (depending on feed grade)

Kragvereistes

• Geïnstalleerde krag: 850 kW totaal
• Primêre Drive: 2 x 160kW scrubber motors, 2 x 75kW screen drives
• Pompe: 4 x 90kW slurry pumps, 2 x 75kW water pumps
• Kragtoevoer: 660V or 1,000V, 50/60Hz, 3fase
• Standby Generator: 1,000 kVA recommended

Materiaalspesifikasies

• Skrop dop: 22mm AR400 steel, hardfaced internal lifters
• Skermdekke: 12mm punch plate (sagte staal), 3mm polyurethane modular panels
• Mispype: Ceramiclined carbon steel, 150mm and 200mm diameters
• Strukturele staal: S355JR, warmdip gegalvaniseer
• Concentrator: Cast iron jig bodies with rubber diaphragm

Fisiese afmetings

• Total Plant Length: 38m (including feed conveyor)
• Total Plant Width: 12m (operating width)
• Total Plant Height: 8.5m (maksimum)
• Totale gewig: 185 ton (droog), 240 ton (bedryf)
• Number of Modules: 4 x 40foot skids

Omgewingsbedryfsreeks

• Bedryfstemperatuur: 10°C tot +45°C (standaard konfigurasie)
• Cold Climate Option: 30°C with heated enclosures and insulated piping
• Hoogte: Up to 3,500m (derating above 2,000m)
• Water Quality: Fresh or brackish water (tot 5,000 ppm TDS)
• Water Supply: 1,8002,200 m³/uur by 810 kroeg

Toepassingsscenario's

Wes-Afrikaanse Alluviale Operasie | Uitdaging: Hoë klei-inhoud (3540%) in weathered saprolite ore caused severe recovery losses in a conventional washing plant. Gold recovery was averaging 78%, with significant losses in the 0.5mm fraction. | Oplossing: Installation of the custom 500 TPH plant with extended scrubber configuration (4minuut retensie tyd) and highpressure water injection. | Resultate: Gold recovery improved to 93.5%, wat 'n bykomende verteenwoordig 1,850 ounces per year. Water consumption reduced by 32%, allowing the operation to expand production within existing water rights. Terugbetalingstydperk: 11 maande.

South American Alluvial Terrace Deposit | Uitdaging: Feed material contained significant oversize (+300mm) and hardpacked gravel layers that caused frequent blockages in the feed system of the existing 300 TPH plant. Stilstand gemiddeld 15% van bedryfstyd. | Oplossing: Upgraded to the custom 500 TPH plant with heavyduty grizzly and larger scrubber chamber. | Resultate: Stilstand verminder tot 4% van bedryfstyd. Deurset het toegeneem vanaf 300 aan 500 TPH, increasing annual production by 1.2 miljoen ton. The modular design allowed relocation to a new terrace after 18 months with only 9 dae van stilstand.

Australian Tailings Retreatment Project | Uitdaging: Retreatment of historical tailings with low feed grade (0.15 g/t) required high throughput to achieve economic viability. The existing plant could not process sufficient tonnage to make the project profitable. | Oplossing: Pasgemaak 500 TPH plant with dualstage screening and enhanced fine gold recovery circuit. | Resultate: Verwerk 3.8 million tons in 14 maande, herstel 18,500 onse. The plant's water recycling system reduced fresh water consumption to 1.2 m³/ton, allowing operation during drought conditions. Project achieved 22% IRR.

Kommersiële oorwegings



Toerustingprysvlakke

| Konfigurasie | Sluit in | Prysreeks (USD) |
||||
| Standaard | Base plant as specified, 12maand waarborg, standaard slytasie dele | $2.8M $3.4M |
| Verbeterde | Standaard + cold climate package, ceramiclined scrubber, extended warranty (24 maande) | $3.5M $4,2 miljoen |
| Turnkey | Verbeterde + site installation supervision, operateur opleiding (4 weke), 2jaar dra onderdele pakket | $4.5M $5.2M |

Opsionele kenmerke

• Centrifugal Concentrator Upgrade: Replace jig bank with 4 x KCXD48 concentrators for improved fine gold recovery (+$450,000)
• Outomatiese monsternemingstelsel: Online grade analysis with automatic concentrate diversion (+$85,000)
• Afstandmoniteringpakket: Satellite telemetry with realtime performance dashboards (+$35,000)
• Additional Water Treatment: Clarifier package for zerodischarge operation (+$280,000)

Dienspakkette

• Voorkomende instandhouding: Kwartaallikse inspeksies, wear part replacement planning, afstanddiagnostiek ($45,000/jaar)
• Volle onderhoudskontrak: All scheduled maintenance, dra dele, and emergency callouts ($180,000/jaar)
• Operateursopleiding: 4week onsite training program covering operation, onderhoud, en probleemoplossing ($28,000)

Finansieringsopsies

• LeasetoOwn: 3660 maand terme met 1020% reswaarde
• Toerusting Lening: 57 year terms with fixed or variable rates
• Produksiegebaseerde betaling: Structured payments based on processed tonnage (minimum 12month commitment)
• Inruilprogram: Credit for existing washing plants (onderhewig aan inspeksie)

Gereelde Vrae

V: What is the minimum clay content the plant can handle without recovery losses?
A: Die standaard konfigurasie hanteer tot 30% clay content effectively. For clay contents between 3040%, we recommend the extended scrubber configuration with increased retention time. Hierbo 40% klei, a preconditioning stage or additional scrubber may be required. We provide a free feed material analysis to determine the optimal configuration for your specific ore.

V: How does the plant perform with fine gold (0.3mm)?
A: The dualstage screening and jig concentration system achieves 9497% recovery for the 0.3mm fraction. For ultrafine gold (75 mikrons), herstel daal na 7080%. If your deposit has significant ultrafine gold content, we recommend adding a centrifugal concentrator stage or an intensive leach reactor.

V: Wat is die tipiese installasie tydlyn?
A: Terrein voorbereiding (foundation pads, watervoorsiening, power connection) takes 23 weke. Plant assembly takes 710 days with a 6person crew and a 100ton crane. Commissioning and operator training typically requires an additional 23 weke. Total timeline from delivery to full production is typically 68 weke.

V: Can the plant be expanded to higher capacity in the future?
A: Ja. The modular design allows for the addition of a second scrubber module to increase capacity to 750800 TPH. The existing screening and concentration modules can handle the increased feed rate with minor modifications. We provide expansion engineering packages for future capacity increases.

V: What is the expected wear part consumption and cost?
A: Gebaseer op velddata van 12 installasies, wear part consumption averages $0.15$0.25 per ton verwerk. This includes screen panels, scrubber lifters, jig diafragmas, en pompwaaiers. The ceramiclined slurry piping has a service life of 8,00010,000 ure. We provide a detailed wear part budget for your specific feed conditions.

V: What are the water quality requirements?
A: The plant operates effectively with water up to 5,000 ppm TDS. Higher salinity may require adjustments to flocculant dosing in the slimes handling circuit. The plant recycles approximately 8590% van proseswater, reducing fresh water consumption to 0.50.7 m³ per ton of feed.

V: Wat is die tyd vir aflewering?
A: Standaard aflewering is 1620 weke vanaf bestellingbevestiging. Dit sluit vervaardiging in, quality control testing, and containerized shipping. For urgent requirements, we offer an expedited manufacturing option with 1012 week delivery at a 5% premie.

V: How does the plant handle seasonal operation or extended shutdowns?
A: The plant is designed for extended shutdowns with minimal preparation. Key components are protected with desiccant packs and sealed bearings. The control system includes a preservation mode that maintains optimal conditions during storage. For cold climate operations, the optional heating package maintains critical components above freezing during shutdown periods.