Equipment / Wet processing / Classification & washing

Classification & washing equipment

After slurrying, sand and coarse particles are separated from the fine clay stream, and the sand is washed and lifted out for dewatering.

PT-SC Spiral classifier
PT-HC Hydrocyclone
PT-BW Bucket wheel sand washer
PT-SS Flat-plate sand scraper

Spiral classifier with red spiral in an inclined tank and top-mounted motor drive

PT-SC Spiral classifier

Settling classification and stream separation

Classifies slurry using differences in particle settling velocity. More readily settling particles collect at the tank bottom and are conveyed by the spiral; finer particles leave with the overflow.

Process role	Desanding and classification; desliming, washing or dewatering are assessed by duty.
Process position	Wet-process preparation; grinding-circuit use requires separate process matching.
Selection inputs	Size distribution, slurry concentration, flow and target fractions.
Specifications	On request, after your feed data or sample are reviewed. Price on request.

Separation depends on particle size, density, concentration and operating conditions.

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Hydrocyclone cluster: a row of red cyclones on a blue manifold frame

PT-HC Hydrocyclone

Slurry classification through a rotating flow

Slurry enters tangentially under pressure and forms a rotating flow. Coarser or denser particles tend toward the underflow, while finer or lighter particles tend to leave through the inner flow and overflow.

Process role	Classification and desanding; concentration or clarification is duty-specific.
System interface	Match the feed pump, inlet pressure, flow and both discharge streams.
Selection inputs	Feed size, density contrast, concentration, pressure and cut-size target.
Specifications	On request, after your feed data or sample are reviewed. Price on request.

Feed pressure, concentration and size distribution are matched to the classification target.

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Bucket wheel sand washer with large red wheel, washing tank and green gearbox drive

PT-BW Bucket wheel sand washer

Washing, desliming and lifting sand

Sand turns and rubs in the washing tank as the wheel rotates. Added water carries away fines and some lighter debris. The wheel lifts and discharges the washed material for downstream dewatering and transfer.

Focused applications	Washed sand, aggregates and quartz-sand washing.
Process integration	Clay-rich feed may need additional washing; fine-sand recovery is a separate duty.
Selection inputs	Clay content, size distribution, water supply and washing target.
Specifications	On request, after your feed data or sample are reviewed. Price on request.

Washed-product quality is confirmed against feed testing and project requirements.

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PT-SS Flat-plate sand scraper

Supporting unit for fine-sand recovery

Used for fine-sand recovery duties within a washing or mineral-processing circuit, with the feed solids, recovery targets and discharge arrangement defined for the project.

Confirm	Inflow, size distribution, solids loading and the recovered-material route.
Specifications	On request, after your feed data or sample are reviewed. Price on request.

Recovery and output criteria are confirmed in the technical proposal.

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Where this fits in a kaolin line

See how the units connect in kaolin wet processing, the kaolin processing line with wet electromagnetic iron removal, and the silica sand line.

Other equipment groups

Feeding & slurrying equipment · Trommel screens & vibratory screens · High-frequency dewatering screens · Slurry pumps & filter-press feed pumps · Filter presses & filtration systems

Need this equipment matched to your material?

Send your feed data and targets, or register for a free 5–10 kg pilot test with a report within 5 days of receiving the sample. Specifications and price on request.