washing

Trommel Scrubber

The FRP Trommel Scrubber is a high-capacity rotary washing machine designed to wash ore, sand, gravel, crushed rock, and construction aggregates containing clay, mud, and surface contamination. It is particularly suitable for large-sized feed material and is widely used to remove water-soluble clay, deleterious materials, and surface coatings, delivering a cleaner product and improving feed conditions for downstream screening or beneficiation.

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Key Benefits / Advantages

Capable of Handling Large Feed Size

The FRP Trommel Scrubber is available with customizable drum diamete to suit different feed conditions. It can handle feed sizes up to 300 mm, making it suitable for coarse ore, large aggregates, and alluvial materials that are beyond the practical range of many conventional washing machines.

Integrated Trommel Screen Extension

An optional trommel screen section can be added to combine washing and screening in a single unit. The screening section adopts a robust drum structure with easily replaceable screen panels. Screen media options include polyurethane, rubber, perforated plate, and wire mesh, providing flexibility for different sizing and wear requirements.

Multiple Wear Liner Options

The internal drum lining can be configured with polyurethane, rubber, or high manganese steel liners to suit different material conditions. Polyurethane offers excellent wear resistance for moderate abrasion, rubber provides cushioning and noise reduction, while high manganese steel is ideal for high-impact and highly abrasive applications.

Adjustable Retention Time

Material retention time inside the drum can be controlled by adjusting lifter configuration, drum speed, or feed conditions. Longer retention improves washing and scrubbing efficiency, while shorter retention increases throughput, allowing a practical balance between cleaning performance and capacity.

Multiple Drive Options

The machine can be equipped with chain drive, friction drive, or gear drive systems. Each drive type offers different advantages in terms of load capacity, transmission stability, and maintenance requirements, allowing selection based on project scale and operating conditions.

Why FRP Trommel Scrubber

FRP Rotary Scrubbers are engineered to provide reliable operation and long-term durability in demanding washing environments. Each drum is precision-machined for exact concentricity, enabling smooth, low-vibration rotation that lowers bearing stress, reduces maintenance demand, and extends service life.

Retention time can be adjusted according to process requirements by changing the lifter configuration, drum speed, or feed solids concentration: retarding lifters increase material retention, while advancing lifters reduce it.

Available in capacities from 30 t/h to 300 t/h, FRP Rotary Scrubbers ensure consistent clay removal and superior product cleanliness across a broad range of ore and aggregate applications.

Frequently Asked Questions

FAQ for Trommel Scrubber

How Does a Trommel Scrubber Work?

Material enters a rotating drum equipped with internal lifters. As the drum rotates, the material is lifted and dropped repeatedly while water is added. This process creates rolling, washing, and mild scrubbing, allowing clay and fines to break apart and wash away with slurry, while larger, cleaned material progresses toward discharge.

What Is the Difference Between a Trommel Scrubber and a Log Washer?

A trommel scrubber uses a rotating drum to achieve rolling, washing, and mild scrubbing, making it suitable for materials with light to moderate contamination where clay is loose and not strongly bonded. In contrast, a log washer applies high-intensity, material-on-material scrubbing to break down sticky, plastic, or cemented clay. Therefore, a trommel scrubber is typically chosen for general washing and pre-treatment, while a log washer is required for heavy clay conditions where strong scrubbing is necessary to achieve effective cleaning and material liberation.

What Information Is Needed to Size a Rotary Scrubber?

Proper sizing of a Rotary Scrubber depends on several key factors, including the type of clay or silt contamination, feed size, required tons per hour capacity, and the scrubber’s position in the overall process flow. Together, these factors determine the appropriate machine size and washing performance required for the application.

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