In most sand markets the price jump from unwashed to washed product is the largest single margin in the plant — and the machines that capture it are unglamorous: a washer, a dewatering screen, a cyclone. We build all of them, plus the tanks and pumps between them, so the water circuit comes from one supplier with one drawing set.
On this page: SJ.L.X wheel-type sand washers for high-throughput washing, SJ.JS spiral washers where fines control matters more than tonnage, SJ.TS dewatering screens that turn washed slurry into handleable product, and the concentrated hydrocyclone unit that recovers the fine fraction from wash water instead of losing it to the pond.
Product and workshop photographs from our own production lines — Hangzhou, Weihai and Wuhu.
Design & working principle
- SJ.L.X wheel-type sand washers — 4 models, 80–240 t/h, low water consumption per tonne; the default choice for aggregate-sand washing at scale.
- SJ.JS spiral sand washers — 2 models, 40–120 t/h; gentler on particles and better at rejecting ultra-fines when the spec punishes 75 µm content.
- Concentrated hydrocyclone unit — recovers 0–0.6 mm fines from wash water back into product; on a 200 t/h plant this is typically 15–25 t/h of saleable sand that would otherwise settle in the pond.
- SJ.TS dewatering screens — 4 models, 50–230 t/h; the last machine in the wet circuit, turning washed slurry into sand you can convey, stockpile and sell by weight — while returning the water to the process.
- Complete water circuit — pumps, tanks, piping and steel structure fabricated to the same drawings, designed as one circuit rather than assembled from vendors.
Parameter table
Published as a real HTML table, not a PDF or an image — so it can be read, copied and indexed. Figures are from our own product documentation; the datasheet and GA drawing follow on request.
| Model | Max feed size (mm) | Wheel diameter (mm) | Capacity (t/h) | Power (kW) | Dimensions (mm) |
|---|---|---|---|---|---|
| SJ.L.X.2030 | 0–10 | 3,000 | 80–120 | 11 | 4,000×2,500×3,250 |
| SJ.L.X.2035 | 0–10 | 3,500 | 120–160 | 15 | 4,500×2,500×3,750 |
| SJ.L.X.2040 | 0–10 | 4,000 | 150–200 | 22 | 5,000×2,500×4,250 |
| SJ.L.X.2445 | 0–10 | 4,500 | 180–240 | 30 | 5,200×3,000×4,750 |
Capacities assume typical river or crushed sand feed at normal slurry density. Water consumption figures and pump sizing come with the quotation.
| Model | Inclination (°) | Spiral Ø (mm) | Trough length (mm) | Capacity (t/h) | Spiral speed (r/min) | Power (kW) | Weight (t) |
|---|---|---|---|---|---|---|---|
| SJ.JS.12.70 | 20 | 1,200 | 7,000 | 40–100 | 6–9 | 11 | 5.5 |
| SJ.JS.15.70 | 20 | 1,500 | 7,000 | 40–120 | 6–9 | 15 | 6.2 |
| Model | Cone angle (°) | Discharge nozzle (mm) | Feed handling (t/h) | Motor power (kW) | Weight (t) |
|---|---|---|---|---|---|
| 800 m³ class | 20 | ≥40 | 1,120–1,760 | 2–90 | 17 |
The recovered-fines tonnage depends entirely on your wash water's fines load — send the pond sediment analysis or a wash-water sample and we will estimate recovery honestly.
| Model | Deck size (mm) | Inclination (°) | Speed (r/min) | Double amplitude (mm) | Capacity (t/h) | Power (kW) | Weight (t) |
|---|---|---|---|---|---|---|---|
| SJ.TS.18.30 | 1,800×3,000 | 4 | 960 | 6.5–9 | 50–130 | 3.5×2 | 6.0 |
| SJ.TS.22.45 | 2,200×4,500 | 4 | 960 | 6.5–9 | 60–150 | 11×2 | 7.8 |
| SJ.TS.24.55 | 2,400×5,500 | 4 | 960 | 6.5–9 | 80–180 | 11×2 | 8.9 |
| SJ.TS.30.60 | 3,000×6,000 | 4 | 960 | 6.5–9 | 150–230 | 18.5×2 | 11.0 |
Size the dewatering screen to the washer's discharge, not to the plant tonnage — it sees only the washed fraction. We pair it with the washer and cyclone on one drawing set.
Configuration & options
Washer selection
Wheel for tonnage, spiral for fines rejection — on some specs we quote both and let the sieve analysis decide.
Fines recovery package
Cyclone plus dewatering screen plus pump sump, sized to your wash water flow; usually pays back in months against pond-dredging costs.
Water system
Settling tank, clean-water return and pump skid designed with the machines — one water circuit, one supplier.
How to choose the right model
- Start from the spec, not the washer: the 75 µm and 0.6 mm limits decide whether you need a spiral, a wheel, or a wheel plus cyclone recovery.
- Then check the moisture target — a washer alone leaves sand wet; the dewatering screen is not optional if the product has to be conveyed or sold by weight.
- Finally count your water: every washer consumes it, and the cyclone recovers both fines and most of the water. On water-scarce sites this is the first machine to price, not the last.
Delivery & service commitments
| Item | Commitment |
|---|---|
| Standard machine lead time | 60 days from order confirmation |
| Annual production capacity / monthly shipments | 1,000 units per year · 100 units per month (all ranges) |
| Spare parts supply | Within 2 months worst case; typically far faster for models in current production |
| Engineer attendance on site | Within 10 days of the requirement being agreed, for export markets |
| Remote support | Response within one working day; included, not charged |
| Warranty | Terms stated in the contract in the same words published on this site |
| Installation & commissioning | Guidance and supervision by our engineers, through to acceptance at rated capacity |
| Buyer provides | Site civil works, electrical installation and site access — drawings and answers supplied |
We supply the machines, the drawings, the commissioning support and the parts. We do not operate your plant after handover.
Common questions
Wheel or spiral washer — how do I choose?
Wheel washers win on tonnage and water consumption per tonne; spiral washers reject ultra-fines more sharply. If your spec has a hard 75 µm limit, lean spiral or add cyclone recovery; if it is a straight cleanliness spec, the wheel is cheaper per tonne.
What happens to the fines in the wash water?
In most plants they settle in a pond that someone pays to dredge. With the hydrocyclone unit, that same fraction is dewatered back onto the product belt — on a mid-size plant that is typically 15–25 t/h of extra saleable sand.