Why spirals anchor gravity circuits
For fine heavy minerals between 0.02 and 2 mm, spiral chutes deliver reliable roughing and scavenging at almost zero operating cost. They have no moving parts: slurry flows down the helical trough and separates by density into concentrate, middling and tailings bands cut by adjustable splitters.
Key parameters to define
- Mineral and feed size distribution after classification.
- Total feed tonnage and number of spiral starts needed.
- Target: roughing ahead of tables, or standalone duty.
- Water supply and slurry density control.
- Site height available — spirals need vertical drop.
Typical configuration ranges
| Item | Common options | Indicative range |
|---|---|---|
| Diameter | 600 / 900 / 1200 / 1500 mm | By duty and fineness |
| Capacity per start | By mineral and feed size | 1–4 t/h |
| Turns | 5-turn standard helix | Per separation duty |
| Material | FRP with wear-resistant lining | Long service life |
Ranges are indicative. Spiral banks are configured from test work on your ore.
What a quotation should clarify
| Quotation area | Questions to record |
|---|---|
| Ore basis | What mineral and size range is the configuration based on? |
| Bank design | How many starts, and roughing/scavenging arrangement? |
| Recovery | Expected grade and recovery from test work? |
| Structure | Support frame and distribution system included? |
| Downstream | Is table or magnetic cleaning stage included in scope? |
Related equipment
Coordinated sourcing from Gongyi
- Sourced in Gongyi. Machines are welded, machined and assembled at qualified Gongyi-area partner plants we coordinate — clear specs, no mystery markups.
- Inspected before shipment. Every line is trial-run or inspected at the partner plant before dispatch; you receive video or on-site evidence with the inspection report.
- Spare parts from stock. Wear parts and standard components ship with the machine, with factory stock behind every order.
- 12-month warranty. Core machinery is covered for 12 months, backed by lifetime technical support from our engineers.
Request a sourcing proposal
Send us your raw material, target capacity and destination port. We will reply with a coordinated configuration, sourcing proposal and production schedule.
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