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MFW Series
Fine Material Washers

MEKA Fine Material Washers are mainly used to separate clay and silt from material up to 10 mm in size, typically collected from the underflow of washing screens, and to dewater the final product.

With easy maintenance, cost-effective design, single and twin screw options, and a wide range of capacities, MEKA Screw Washers deliver maximum cleaning performance for sand and fine aggregates.

Looking for a cost-effective solution for washing sand and fine materials?
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Expert in fine aggregate cleaning

MEKA Fine Material Washers mainly consist of a washing/transport screw and a separation tank. In the separation tank, clay within the material is removed using hydraulic separation, while the screw conveyor dewaters the material for final discharge.

Lightweight and unwanted particles rise to the surface and are discharged through overflow weirs. These systems wash fine aggregates up to 10 mm in size and transfer the cleaned material to the next stage, separating it from water.

Dirty water is directed by adjustable weirs at the rear of the tank and drained via a discharge pipe.

Compared to competitors, MEKA Fine Material Washers offer a robust and heavy-duty body structure, effective fine material classification, low maintenance costs, and extended service life.

Applications

Washing of fine aggregates and sand (0–10 mm) from screen undersize

Improving the quality of natural and crushed sand

Removing silt and clay from fine materials

Producing clean sand for plaster, concrete, and asphalt applications

Pre-dewatering washing process

Sand and fine material washing in mining and industrial operations

Recycling applications

Fine Material Washers Technical Specifications

MFW 3625S

MFW 3625D

MFW 4432S

MFW 4432D

MFW 5434S

MFW 5434D

MFW 6635S

MFW 6635D
(Single Screw) (Single Screw) (Double Screw) (Double Screw) (Single Screw) (Single Screw) (Double Screw) (Double Screw) (Single Screw) (Single Screw) (Double Screw) (Double Screw) (Single Screw) (Single Screw) (Double Screw) (Double Screw)
Screw Diameter x Tube Length (mm x mm) Screw Diameter  x Tube Length (inch x feet) 917x7769 36''x25' 917x7769 36''x25' 1120x9802 44''x32' 1120x9802 44''x32' 1370x10060 54''x34' 1370x10060 54''x34' 1675x10760 66''x35' 1675x10760 66''x35'
*Capacity (mtph) *Capacity (stph) 23-90 25-100 45-180 50-200 35-160 40-175 70-315 80-350 60-250 70-275 125-500 140-550 90-360 100-400 180-725 200-800
Material Size (mm) Material Size (inch) 0-10 3/8" 0-10 3/8" 0-10 3/8" 0-10 3/8" 0-10 3/8" 0-10 3/8" 0-10 3/8" 0-10 3/8"
Power (kW) Power (HP) 15 20 2x15 2x20 18.5 25 2x18.5 2x25 30 40 2x30 2x40 45 60 2x45 2x60
Screw (rpm) Screw (rpm) 10-21 10-21 10-21 10-21 8-17 8-17 8-17 8-17 7-14 7-14 7-14 7-14 5-11 5-11 5-11 5-11
**Weight (kg) **Weight (lbs) 6500 14333 11700 25799 10500 23153 18850 41566 13950 30761 25000 55127 22000 48512 40250 88754
Water-100 Mesh (gpm) Water-100 Mesh (m3/h) 720 164 1250 284 1720 391 2800 637 2090 475 3700 842 2590 589 4375 995
Water-150 Mesh (gpm) Water-150 Mesh (m3/h) 320 73 640 146 760 173 1440 328 930 212 1750 398 1150 262 2100 478
Water-200 Mesh (gpm) Water-200 Mesh (m3/h) 180 41 360 82 460 105 810 184 575 131 935 213 650 148 1095 249

*Capacity values are indicative only, results may vary depending on feed gradation, silt, clay content,density, amount of water used, equipment configuration and application.

**Weights shown include drive motor package, support legs, maintenance platform, inlet and outlet chutes.
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What is Fine Material Washers?

Fine Material Screw Washers, also called sand screws or spiral classifier, are equipment which are used to dewater, classify and wash for removing excessive dust, the impurities and producing high-quality sand. They also have a light scrubbing effect and this help to remove clays, silts and unwanted contaminants.

Types of Fine Material Washers
The fine material washer is a washing equipment which consists of one or two shafts equipped with spirals in a tank at a certain inclination.
How Does Fine Material Washers Work?
Screw provides agitation motion which propel the settled heavier material upwards while the finer light material move back with the water.
Advantages of Using Fine Material Washers
- Accepts sizes up to 10 mm
- Successful sand cleaning with less water
- Great Achievement in dewatering
- Low operation and investment costs
Fine Material Washers Processes Applications

Primarily the removal of impurities such as clay and dewatering of sand.

Experience in manufacturing plants and equipment in the crushing, screening, mining and ready-mixed concrete industries since 1987
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We conduct efficiency tests in a computer environment and after production with expert R&D engineers.
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To ensure your production is uninterrupted, critical parts are always available in our spare parts stock.
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MEKA Fine Material Washers Options
Screw Liner Options
Depending on your application, MFWS Series Washers can be equipped with polyurethane or cast screw liners, ensuring extended service life.
Automatic Lubrication Option
An automatic lubrication system can be integrated to regularly lubricate the bearings and minimize human errors. Proper lubrication reduces failure risk and shortens maintenance time.
Electrical Panel Options
MFWS units can be supplied with a direct-on-line (DOL) starter panel for economic operation, or a VFD panel for soft start/stop, adjustable motor speed, and energy savings.
Fully Galvanized Structural Design
When required, MEKA Fine Material Washers can be manufactured with a fully galvanized body and structural components for enhanced corrosion resistance.
Maintenance Platform Option
Optional maintenance platforms provide safe and convenient access for maintenance operations, improving both safety and service efficiency.
Looking for custom options or configurations for MEKA Fine Material Washers?
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