Gold Wash Plant with Trommel (4 TPH)

The Semi-Portable Gold Wash Plant (Scrubber + Trommel Type) is a compact mineral processing system designed for efficient recovery of both coarse and fine gold.
It combines multiple processes including screening, scrubbing, classification, and centrifugal concentration in a single unit. The system is suitable for small to medium-scale mining operations and can be transported easily.
The plant ensures effective separation by dividing material into different size fractions and processing each fraction using appropriate recovery methods.

WORKING PRINCIPLE:

• The plant operates through a multi-stage process

Process Flow:

• Pre-Screening (Grizzly)

• Removes large rocks (>75 mm)

• Scrubbing

• Rotating scrubber breaks clay and cleans material

• Screening

• Double deck screen separates:

• 8 mm → rejected

• 2–8 mm → sluice

• <2 mm → concentrators

• Gravity Separation

• Sluice → recovers coarse gold

• Centrifugal concentrators → recover fine gold

• Slurry Transport

• Pump transfers fine slurry to concentrators

• Concentrate Collection

• Gold collected and further processed

PROCESS ADVANTAGES:

• Efficient recovery of both coarse and fine gold
• Reduces gold loss compared to traditional methods
• Handles clay-rich materials effectively
• Flexible operation (batch or continuous)
• Easy transport and installation

MAIN COMPONENTS:

• Grizzly (coarse screening)
• Rotary scrubber
• Double-deck vibrating screen
• Sluice box
• Slurry pump
• Centrifugal concentrators
• Electrical control system

LIMITATIONS:

• Capacity limited by fine material processing units
• Requires periodic stopping for concentrate collection (batch mode)
• Performance depends on:
• Feed size distribution
• Proper water supply
• Slurry consistency

OPERATION & MAINTENANCE NOTES:

• Daily Checks:

• Ensure water jets are functioning properly

• Check filters and remove blockages

• Inspect bowl and riffles

• Operation:

• Maintain proper water pressure

• Adjust cycle time based on feed characteristics

• Monitor tailings for gold loss

• Important:

• Feed size must be controlled to avoid blockage

• Consistent water supply is critical for performance

OPTIMIZATION PARAMETERS:

• Key variables affecting performance:
• Feed size distribution
• Slurry density
• Feed rate
• Rotational speed (RPM)
• Water pressure
• Cycle time

Mining Applications:

• Alluvial gold mining
• Placer mining
• Small-scale gold processing plants

Processing Uses:

• Recovery of gold from mixed-size material
• Processing of clay-rich ores
• Exploration and pilot-scale operations

Capacity:

• Overall plant capacity: up to ~10 TPH
• Fine material processing capacity:
• ~2 TPH per centrifugal unit (-2 mm material)

Feed Size Distribution:

• 75 mm → rejected by grizzly

• 8 mm – 75 mm → scrubbed and screened
• 2 mm – 8 mm → processed via sluice
• <2 mm → processed via centrifugal concentrators

Power Requirements:

• Approximate power: ~25 kVA (excluding water pump)
• Electrical supply: 220 V, single-phase

Water Requirements:

• Water flow: ~20 – 35 m³/hr

• Semi-portable, skid-mounted design

• Integrated system:

• Scrubber

• Trommel/screen

• Sluice

• Centrifugal concentrators

• Efficient recovery of:

• Coarse gold (sluice)

• Fine gold (centrifugal units)

• Double-deck screening for accurate classification

• Can operate in:

• Batch mode (with 2 concentrators)

• Near-continuous mode (with additional unit)

• Flexible installation (concentrators can be placed remotely)

• Simple operation with minimal training required

• Durable and reliable design