Titre: Solving High Clay Content & Faibles taux de récupération: The Chinese 500 Tph Gold Mining Washing Plant Engineered for Bulk Alluvial Operations

Sous-titre: A modular, highthroughput solution designed to address the specific challenges of sticky feed material, water scarcity, and fines loss in largescale gold recovery.

The Operational Bottlenecks You Face at 500 TPH

Gérer un 500 tph alluvial gold operation presents a unique set of constraints. Your profitability depends on throughput, but common issues erode margins daily:

1. Clay Binding & Screen Blinding: Teneur élevée en argile (sur 15%) causes trommel screens to clog, reducing effective capacity by 2040% and forcing costly manual cleaning downtime.
2. Consommation excessive d'eau: Traditional washing plants often consume 8001,200 m³/h of water at this scale, creating environmental compliance issues and high pumping costs.
3. Amendes & Perte d'or: Inefficient scrubbing and classification lead to 510% d'or fin (0.5mm) being lost to the tailings stream, directly impacting your recovery rate.
4. Structural Wear & Larme: The sheer mass of 500 tph of abrasive material accelerates wear on drums, écrans, et tuyauterie, leading to unscheduled maintenance every 400600 heures d'ouverture.
5. Site Mobility & Temps d'installation: Fixed plants require weeks of civil works. Your project timeline demands a system that can be relocated and operational within days, pas des semaines.

Is your current setup forcing a tradeoff between throughput and recovery? The following solution addresses these specific pressure points.

Présentation du produit: Le 500 TPH Modular Gold Washing & Recovery Plant

This is a heavyduty, multistage washing and screening system engineered specifically for hightonnage alluvial, au bord de la survie, and weathered hardrock gold deposits. The plant operates on a closedloop water management principle to maximize recovery while minimizing environmental footprint.

Flux de travail opérationnel (5 Étapes clés):

1. Alimentation & PreScour: Matériel tout-venant (jusqu'à 600 mm) is fed into a heavyduty grizzly feeder. Highpressure water jets (810 bar) initiate disaggregation of clay balls.
2. Primary Washing & Dépistage: Material enters a dualdrive, heavyduty trommel (2.4m x 8.0m). Lifter bars and highpressure internal spray bars (avec 120 nozzles) break down clay. Surdimensionné (+20mm) is rejected as waste rock.
3. Secondary Scrubbing: The 20mm fraction enters a log washer or attrition scrubber for intensive clay dispersion, ensuring gold particles are fully liberated from clay coatings.
4. Classification & Concentration: The slurry passes through a multideck vibrating screen (par ex., 2.0mx 6,0 m) for size classification. The 2mm fraction is fed to a series of centrifugal concentrators (par ex., 4 x STL120 units) pour la récupération primaire de l'or.
5. Résidus & Gestion de l'eau: Tailings slurry is pumped to a dewatering screen or thickener. Recovered water is recycled back to the spray bars, achieving up to 90% water reclamation.

Champ d'application:

• Approprié: Alluvial gold, placer gold, weathered gold ore, high clay content deposits.
• Limites: Not designed for primary hardrock crushing (requires a separate crushing circuit). Not suitable for deposits with high sulfide content without additional flotation stages.

Fonctionnalités principales & Engineering Rationale

HeavyDuty DualDrive Trommel | Base technique: Hightorque, lowspeed hydraulic or gearbox drive | Avantage opérationnel: Handles sticky, highclay feed without stalling; contrôle de vitesse variable (26 RPM) optimizes washing time | Impact sur le retour sur investissement: Reduces screen blinding downtime by 60%, increasing effective operating hours by 34 heures par quart de travail.

HighPressure Internal Spray Bar System | Base technique: 120 x 3/8" ceramic nozzles at 810 pression en bars, angled at 45° for maximum scouring | Avantage opérationnel: Breaks down clay balls within the first 3 meters of the trommel, assurer 95%+ disaggregation before screening | Impact sur le retour sur investissement: Lowers water consumption by 25% par rapport aux systèmes standards (depuis 1,000 m³/h to 750 m³/heure), saving $0.15/ton in pumping costs.

Conception modulaire montée sur patins | Base technique: ISO containerized or skidmounted subassemblies with quickconnect piping and electrical harnesses | Avantage opérationnel: Site setup in 57 days without concrete foundations; relocatable in 3 jours | Impact sur le retour sur investissement: Réduit les coûts de préparation du site en 70% and allows rapid deployment to new mining zones.

Integrated Fines Recovery System | Base technique: Hydraulic classifier or hydrocyclone cluster (par ex., 6 x 10" cyclones) | Avantage opérationnel: Récupère 95% of 0.074mm material, preventing gold loss to tailings | Impact sur le retour sur investissement: Augmente la récupération globale de l’or de 35%, se traduisant par un supplément 1525 kg of gold per year at a 0.5 g/t grade.

WearResistant Lining Package | Base technique: 1216mm thick AR400 steel in highimpact zones; polyurethane or ceramic tiles in highwear areas | Avantage opérationnel: Extends component life to 2,500+ operating hours before major rebuild | Impact sur le retour sur investissement: Réduit les coûts de maintenance annuels de $80,000$120,000 compared to standard mild steel construction.

Système de contrôle automatisé basé sur PLC | Base technique: Automate Siemens ou AllenBradley avec écran tactile HMI | Avantage opérationnel: One operator can manage the entire plant; automated start/stop sequences and overload protection | Impact sur le retour sur investissement: Reduces labor costs by 23 operators per shift and prevents catastrophic equipment failure.

Avantages compétitifs: Comparaison des performances

| Mesure de performances | Norme de l'industrie (500 TPH) | Notre 500 Solution TPH | Avantage (% Amélioration) |
| : | : | : | : |
| Débit efficace (avec 20% argile) | 350400 TPH | 480500 TPH | +25% |
| Consommation d'eau | 1,000 m³/heure | 750 m³/heure | 25% |
| Taux de récupération de l'or (2fraction en mm) | 8590% | 9396% | +68% |
| Screen Blinding Downtime | 812 hours/week | 34 hours/week | 60% |
| Site Setup Time | 1421 jours | 57 jours | 65% |
| Durée de vie des composants (tambour) | 600 heures | 2,500 heures | +316% |

Data based on field trials at a 500 tph alluvial operation in West Africa with 18% teneur en argile.

Spécifications techniques

| Paramètre | Spécification |
| : | : |
| Modèle | GT500 (Gold Trommel) / GW500 (Gold Washing Plant) |
| Capacité | 500 TPH (nominal, based on bulk density of 1.6 t/m³) |
| Taille de l'alimentation | ≤ 600 mm |
| Trommel Dimensions | Ø 2.4 m x 8.0 m (dual drive) |
| Tamis vibrant | 2.0 m x 6.0 m (double pont, 20mm & 2ouvertures en mm) |
| Exigences d'alimentation | 350450 kW (total installé, including pumps) |
| Besoin en eau | 600750 m³/heure (à 68 bar) |
| Spécifications matérielles | Cadre principal: Acier Q345B; tambour: Acier AR400; Écrans: Polyurethane modules |
| Dimensions physiques (L x l x H) | 28 m x 8 m x 6 m (assemblé) |
| Poids opérationnel | ~85 tons |
| Gamme environnementale | 10°C à 50°C; suitable for high humidity and dust |

Scénarios d'application & Field Results

LargeScale Alluvial Mine (Afrique de l'Ouest) | Défi: 25% clay content causing 40% capacity loss and frequent screen blinding. Water supply limited to 800 m³/heure. | Solution: Installed the 500 TPH plant with highpressure spray bars and a closedloop water system. | Résultats: Réalisé 480 TPH effective throughput. Water consumption reduced to 720 m³/heure. La récupération de l'or est passée de 87% à 94%. Maintenance downtime reduced by 50%.

Weathered HardRock Operation (Asie du Sud-Est) | Défi: Matière alimentaire contenue 15% clay and 10% humidité, causing severe wear on standard trommel screens. | Solution: Deployed the plant with AR400 lining and ceramictiled highwear zones. | Résultats: Trommel screen life extended from 600 à 2,800 heures. Coûts de maintenance annuels réduits de $95,000. La disponibilité des plantes a augmenté à 92%.

Riverbed Placer Project (Amérique du Sud) | Défi: Need for rapid relocation every 6 months due to mining permits. Fixed plant was not feasible. | Solution: Used the modular skidmounted design. | Résultats: Plant relocated and operational in 6 jours. Site preparation costs reduced by 65%. Two relocations completed without structural damage.

Considérations commerciales



Niveaux de tarification des équipements (FOB Chinese Port):

• Configuration standard (Plante de base): $850,000 $1,100,000 (includes trommel, écran, mangeoire, panneau de commande de base)
• Configuration améliorée (with Fines Recovery): $1,200,000 $1,500,000 (adds hydrocyclone cluster, concentrateurs centrifuges, écran de déshydratation)
• Full Turnkey Package (with Water Management): $1,800,000 $2,400,000 (includes thickener, pompes, tuyauterie, Automatisation des automates, and 1year spare parts kit)

Fonctionnalités facultatives & Mises à niveau:

• Forfait de surveillance à distance: $45,000 (realtime data on throughput, consommation d'énergie, débit d'eau)
• Ensemble résistant à l'usure: $65,000 (ceramiclined trommel, AR500 screen decks)
• Châssis mobile (TrailerMounted): $120,000 (for rapid sitetosite mobility)

Forfaits de services:

• Garantie de base: 12 mois ou 2,000 heures d'ouverture (pièces seulement)
• Garantie prolongée: 24 mois ou 4,000 heures d'ouverture (parties + travail)
• Mise en service & Entraînement: $25,000 (2week onsite setup and operator training)
• Contrat de maintenance annuel: $40,000/année (comprend 2 visites de sites, wear inspection, and spare parts replenishment)

Options de financement:

• Location-propre: 30% acompte, 36terme d'un mois à 68% AVR (sous réserve d'approbation de crédit)
• Paiement différé: 50% sur commande, 40% avant expédition, 10% après la mise en service
• Programme d'échange: Accepting used 200300 TPH washing plants as partial payment (value assessed on condition)

Foire aux questions

1. Can this plant handle feed material with over 30% teneur en argile?
Oui, but we recommend adding a secondary log washer or pug mill for clay content exceeding 30%. The standard trommel with highpressure spray bars is effective up to 25% argile. Pour une argile plus élevée, we can integrate a prescrubbing stage.

2. What is the expected gold recovery rate for fine gold (0.3mm)?
With the integrated fines recovery system (hydrocyclone and centrifugal concentrators), les données de terrain montrent 9295% recovery for gold particles down to 0.1mm. For sub0.074mm gold, recovery drops to 7080%, which is industrystandard for gravity methods.

3. How long does it take to train operators on this system?
The PLCbased HMI system is intuitive. Standard training takes 35 days for a crew of 4 opérateurs. We provide a comprehensive manual and video tutorials. L'assistance à distance est disponible 24/7.

4. What are the shipping logistics for a 500 Usine TPH?
The plant ships in 810 standard 40foot opentop containers or 4 flatrack containers. Total shipping weight is approximately 85 tonnes. Delivery time from Chinese port to West Africa or South America is typically 3045 jours.

5. Can the plant be integrated with an existing crushing circuit?
Oui. The feed hopper can accept material from a primary jaw crusher or directly from a dump truck. We provide interface drawings for conveyor connections. The plant is designed to handle feed sizes up to 600mm.

6. What is the typical power consumption per ton of material processed?
Total installed power is 350450 kW. À 500 TPH, this equates to 0.70.9 kWh par tonne. C'est 1520% lower than comparable plants due to the efficient dualdrive system and variable frequency drives on major motors.

7. What is the warranty on the trommel drum and screen decks?
The trommel drum is warranted for 12 months against manufacturing defects. Plateformes d'écran (polyurethane modules) are warranted for 6 mois. Pièces d'usure (doublures, nozzles) are considered consumables and are not covered under warranty but are available as lowcost replacements.