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Help CenterRotary Drum Scrubber Gold Minerals Washing Machine
Product Spotlights
Long drum of the scrubber retains material for longer,more vigorous washing for complete separation
Thickening type steel plate for the drum
Heavy duty bearing,gear and roller
One high output electrical motor driving a gear system providing effcient torque
The water with high pressure flushed the in wall of drum
Can accept material up to 230mm
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Rotary Scrubber – Technical Specification & Product Description
Overview
The Rotary Scrubber (also known as Trommel Scrubber or Drum Scrubber) is a heavy-duty ore washing machine designed for the disaggregation and cleaning of clay-bound mineral aggregates. It is widely used in alluvial gold mining, diamond extraction, tin/tungsten ore processing, and aggregate production where raw materials contain high levels of sticky clay, mud, or fine slime coatings that hinder downstream separation efficiency.
The machine operates on the principle of mechanical scrubbing through rotational tumbling action, breaking down agglomerated clay lumps and liberating valuable minerals from adhering gangue material.
Working Principle
Raw material is fed into the rotating drum via a static feed hopper. As the drum rotates on its inclined axis, the material is lifted by internal lifter bars or flights and cascaded downward through a controlled water spray system. The combined action of attrition (inter-particle friction) and hydraulic washing disintegrates clay lumps and washes fine particles through the perforated screen plates. Cleaned oversize material discharges from the drum tail, while the slurry containing liberated minerals and fine fractions passes through the screen apertures for further processing (e.g., gravity concentration, screening, or cycloning).
Key Features
Feature |
Description |
|---|---|
Heavy-Duty Construction |
Thick-walled steel drum with reinforced rings and trunnion supports for continuous operation under abrasive conditions. |
Adjustable Retention Time |
Variable drum inclination (typically 2°–5°) and rotational speed allow optimization for different ore types. |
Integrated Screening |
Perforated plate or wedge wire screens built into the drum section enable simultaneous scrubbing and size classification. |
High Clay Removal Efficiency |
Internal lifter bars create aggressive tumbling action, achieving >90% disagglomeration of cohesive clay. |
Modular Design |
Drive units, liners, and screen sections are replaceable, minimizing downtime and maintenance costs. |
Water Management System |
Multiple spray bars with adjustable nozzles ensure thorough washing while controlling water consumption. |
Technical Specifications (Typical Range)
Technical Parameters | |||||||
Model |
Drum Size (mm) |
Screen size (mm) |
Rotation speed (r/min) |
Feeding size (mm) |
Water Consumption (m3/h) |
Capacity (T/h) |
Power (Kw) |
RXT1030 |
Φ1000×3000 |
≤20 |
27.9 |
≤80 |
1 |
40 |
15 |
RXT1136 |
Φ1100×3600 |
≤25 |
27.6 |
≤80 |
1.2 |
65 |
15 |
RXT1230 |
Φ1200×3000 |
≤25 |
27.6 |
≤100 |
1.3 |
70 |
22 |
RXT1430 |
Φ1400×3000 |
≤25 |
27.6 |
≤100 |
1.5 |
80 |
22 |
RXT1545 |
Φ1500×4500 |
≤25 |
21 |
≤160 |
1.7 |
120 |
30 |
RXT2265 |
Φ2200×6500 |
≤50 |
19 |
≤230 |
1.8 |
180 |
37 |
Note: Specifications vary by manufacturer and application requirements.
Applications
-
Alluvial Gold Mining – Disintegration of clay-bound gold particles prior to sluice boxes, centrifugal concentrators, or jigs.
-
Diamond Recovery – Gentle scrubbing action preserves fragile diamond crystals while removing clay coatings.
-
Tin & Tungsten Ores – Liberation of heavy minerals from lateritic overburden.
-
Iron Ore Beneficiation – Desliming of goethitic ores to improve downstream magnetic separation.
-
Aggregate Production – Washing of sand, gravel, and crushed stone for construction applications.
-
Industrial Minerals – Cleaning of limestone, phosphate rock, bauxite, and other clay-contaminated deposits.
Advantages Over Alternative Methods
Compared to log washers or spiral classifiers, rotary scrubbers offer:
-
Higher throughput per unit footprint
-
Superior clay breakdown for highly cohesive materials
-
Simultaneous scrubbing and screening in a single unit
-
Lower specific energy consumption for equivalent desliming performance
-
Reduced wear rates due to cascading rather than forced shearing action
Maintenance Considerations
-
Liner Replacement: Rubber or manganese steel liners typically require replacement every 2,000–6,000 operating hours depending on abrasiveness of feed material.
-
Screen Plate Inspection: Regular inspection of perforations for blinding or wear; modular panels allow sectional replacement without full drum disassembly.
-
Drive System: Gear-and-pinion or chain drive systems should be lubricated per manufacturer schedule; rubber tire-driven units require periodic tire rotation and alignment checks.
-
Bearing Monitoring: Trunnion roller bearings operate under high radial loads; temperature and vibration monitoring is recommended for predictive maintenance.
Optional Configurations
-
Double/Dual-Stage Scrubbing – Two drums in series for extremely clay-rich ores.
-
Variable Frequency Drive (VFD) – Precise speed control for process optimization.
-
Stainless Steel or Epoxy-Coated Contact Surfaces – For corrosive environments.
-
Integrated Slurry Pump – Direct transfer of screened slurry to downstream equipment.
-
Mobile Skid-Mounted Package – Complete plug-and-play unit for remote site deployment.
Quality Assurance Notes
When sourcing a rotary scrubber, verify:
-
Drum shell thickness (minimum 12mm for heavy-duty applications)
-
Welding standards (full penetration welds at critical stress points)
-
Balance testing of assembled drum to minimize vibration
-
Availability of spare parts and local service support
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