Subject: Optimizing HighVolume Recovery: Engineering Specifications for 500 TPH Gold Washing Plants

1. The Cost of Inefficient Throughput in Alluvial Operations

Your operation faces a critical bottleneck: traitement 500 tons per hour of feed material while maintaining gold recovery rates above 90%. Les défis courants incluent:

• Oversized Feed Handling: Uncrushed clay balls and boulders (exceeding 150mm) cause 1218% unscheduled downtime in standard scrubbers, costing an estimated $4,500/hour in lost production.
• Slurry Management Failures: Inadequate desliming leads to 812% gold loss in overflow fines, directly reducing your monthly concentrate yield.
• Water Consumption Penalties: Conventional systems often exceed 1,500 m³/day at this capacity, triggering regulatory fines or requiring expensive recycling infrastructure.
• Usure des composants: High silica content (au-dessus de 40%) in feed material can reduce trommel screen life by 60% if not specified for abrasion resistance.



Can your current setup handle a 500 TPH feed with 95%+ availability during the 8month operating season? The following specification addresses these constraints directly.

2. Présentation du produit: Le 500 TPH Modular Gold Washing Plant

This equipment is a robuste, skidmounted alluvial gold processing system conçu pour une utilisation continue 500 TPH feed rates. It integrates scrubbing, dépistage, and primary concentration into a single, transportable unit.

Flux de travail opérationnel:
1. Trémie d'alimentation & Grizzli: 50ton capacity hopper with hydraulic tipping grid (200mm aperture) removes +200mm oversize.
2. Rotary Scrubber: 3.2m diameter x 8.0m long drum with 18mm AR400 steel lifters. Breaks down claybound material at 12 RPM.
3. Trommel Screen: 2.4m diameter x 6.0m doubledeck screen (12mm and 6mm apertures). Classifies 6mm slurry to concentrators.
4. Primary Jigging Circuit: Four parallel duplex jigs (30 tph chacun) recover free gold from the 6mm fraction.
5. Tailings Discharge: Hydraulic cyclone desliming unit (facultatif) for fines management.

Champ d'application: Best suited for placer deposits, weathered hard rock (oxide), and river terrace gravels with clay content up to 35%. Limites: Not recommended for primary hard rock (requires crushing circuit) or feeds with high sulfide content (>5%).

3. Fonctionnalités principales

HighTorque Scrubber Drive | Base technique: Hydrostatic variablespeed drive with planetary gearbox | Avantage opérationnel: Adjustable drum speed (814 RPM) to match clay plasticity without stalling | Impact sur le retour sur investissement: Reduces power consumption by 18% contre. fixedspeed drives; eliminates shear pin replacement costs ($2,200/événement)

Conception de patins modulaires | Base technique: ISO container footprint (12m x 2.5m x 3.2m per module) | Avantage opérationnel: Site assembly in 5 days with crane; no concrete foundations required | Impact sur le retour sur investissement: Enregistre $180,000 in civil works per relocation; reduces mobilization time by 60%

Polyurethane Screen Media | Base technique: 65mm thick modular polyurethane panels with 30% aire ouverte | Avantage opérationnel: 3x longer wear life vs. fil tissé; reduces blinding in sticky clay | Impact sur le retour sur investissement: Screen replacement cost drops from $14,000/quarter to $4,500/quarter

DualStage Jigging Circuit | Base technique: Four 2cell duplex jigs with automatic hutch water control | Avantage opérationnel: Réalise 9295% recovery for +75 micron d'or | Impact sur le retour sur investissement: Increases monthly gold capture by 79% contre. singlestage jigging

Gestion intégrée de l'eau | Base technique: Closedloop sump with 200m³/hr centrifugal pump and hydrocyclone | Avantage opérationnel: Recycles 85% d'eau de procédé; reduces fresh water demand to 300 m³/jour | Impact sur le retour sur investissement: Eliminates $0.15/m³ water sourcing costs; meets discharge compliance

4. Avantages compétitifs

| Mesure de performances | Norme de l'industrie (500 TPH) | 500 Solution pour usine de lavage TPH | Avantage (% Amélioration) |
| : | : | : | : |
| Temps de disponibilité (clay feed) | 72% (8 hours downtime/week) | 91% (2 hours downtime/week) | +26% |
| Récupération d'or (75m) | 82% | 93% | +13% |
| Consommation d'énergie | 0.8 kWh/tonne | 0.55 kWh/tonne | 31% |
| Consommation d'eau | 1,200 m³/jour | 300 m³/jour | 75% |
| Screen Life (silica feed) | 4 mois | 14 mois | +250% |
| Temps de mobilisation | 14 jours | 5 jours | 64% |

5. Spécifications techniques



| Paramètre | Spécification |
| : | : |
| Capacité | 500 TPH (nominal), 550 TPH (peak, aliments secs) |
| Feed Top Size | 200mm (grizzly aperture) |
| Scrubber | 3.2m dia. x 8.0m, 18mm AR400, 12 RPM (variable 814) |
| tambour | 2.4m dia. x 6.0m, double pont (12mm / 6mm) |
| Jigging Capacity | 4 x 30 TPH duplex jigs (120 TPH total concentrate) |
| Exigence de puissance | 275 kW (380V/50Hz ou 480V/60Hz, 3phase) |
| Besoin en eau | 300 m³/jour (frais), 1,200 m³/jour (circulating) |
| Poids opérationnel | 185 tonnes métriques (sec) |
| Dimensions (LxlxH) | 28m x 8m x 6.5m (assemblé) |
| Operating Temp Range | 10°C to 45°C (with coldweather package) |

6. Scénarios d'application

LargeScale Alluvial Mine, Afrique de l'Ouest | Défi: 35% clay content in feed caused 40% downtime in existing scrubber; gold recovery was 78% due to fines loss | Solution: Installed 500 TPH plant with hightorque scrubber and dualstage jigging | Résultats: Uptime increased to 89%; gold recovery improved to 92%; monthly production rose from 18 kg à 24 kilos

River Terrace Gravel Operation, Amérique du Sud | Défi: High silica content (55%) destroyed trommel screens every 3 mois; replacement cost $18,000 par événement | Solution: Specified polyurethane screen media and AR400 scrubber liners | Résultats: Screen life extended to 14 mois; annual maintenance cost reduced by $52,000

Contract Mining Project, Asie du Sud-Est | Défi: Site required relocation every 6 mois; conventional plant took 21 days to move | Solution: Deployed modular skidmounted 500 Usine TPH | Résultats: Relocation completed in 5 jours; mobilization cost reduced by 65%; project delivered 3 des semaines avant la date prévue

7. Considérations commerciales

Niveaux de tarification des équipements:

• Configuration de base (Acier standard): $1.85M $2.1M (includes scrubber, tambour, gabarits, Panneau de contrôle)
• Configuration Premium (AR400/AR500 liners): $2.3M $2.6M (includes wear package, entraînement hydraulique, autolube)
• Full Turnkey Package: $3.1M $3.5M (includes feed hopper, convoyeurs, water system, 12month spares kit)

Fonctionnalités facultatives:

• Coldweather package (heated sumps, insulated piping): +$180,000
• Remote monitoring system (SCADA with 4G telemetry): +$95,000
• Gold room with shaker table and retort: +$220,000

Forfaits de services:

• Garantie standard: 12 mois / 4,000 heures d'ouverture
• Extended Service Contract: $45,000/année (includes quarterly inspections, 48hour emergency response)
• Formation des opérateurs: $12,500 (5day onsite program for 4 opérateurs)

Options de financement:

• 30% down payment, balance over 36 months at 6.5% AVR (sous réserve d'approbation de crédit)
• Leasetoown option: $48,000/month for 60 mois

8. FAQ

Q: Can this plant handle feed with 40% teneur en argile?
UN: Oui. The hightorque scrubber (12 RPM with 18mm lifters) is designed for clay plasticity up to 45%. Field data from West Africa shows 91% uptime with 35% clay feed.

Q: What is the minimum order quantity for a 500 Usine TPH?
UN: Minimum order is one complete plant. Cependant, we require a 30% deposit to initiate fabrication, with lead time of 1416 semaines à compter de la confirmation de la commande.

Q: How does this compare to a 300 TPH plant in terms of cost per ton?
UN: Le 500 TPH plant reduces cost per ton by 22% ($0.45/tonne contre. $0.58/ton for 300 TPH) due to shared infrastructure and lower power consumption per ton.

Q: What is the expected payback period?
UN: Based on $1,800/oz gold and 92% récupération, typical payback is 810 months for a 500 TPH operation processing 0.5 g/t feed.

Q: Can the plant be modified for diamond recovery?
UN: Oui. The jigging circuit can be reconfigured with grease belts or Xray sorters. Contact our engineering team for a feasibility assessment.

Q: What is the warranty on the trommel screen?
UN: 12 months against manufacturing defects. Polyurethane panels are warranted for 24 months against premature wear (excluding abrasive feed above 60% silice).

Q: How is the plant shipped?
UN: In 6 ISO container modules (20ft and 40ft). Total shipping volume is 180 m³. CIF port delivery is included in the pricing.