India’s mining sector relies heavily on spiral classifiers for mineral processing and sand-washing applications. Leading manufacturers like Metofabrik, Multotec, and CDE Asia produce high-efficiency spirals tailored to local ore characteristics.
| Model | Diameter (mm) | Slope Angle | Capacity (tph) | Motor Power (kW) |
|---|---|---|---|---|
| SX7 | 750 | 14-18° | 15-25 | 3.0 |
| SX12 | 1200 | 12-16° | 50-80 | 7.5 |
| SX20 | 2000 | 10-15° | 120-180 | 15.0 |
Modern plants combine jaw/cone crushers with spiral classifiers for closed-circuit washing. Typical configurations use:
1. Primary jaw crusher (300mm feed size)
2. Secondary cone crusher (CSS 25mm)
3. Tertiary spiral classifier (SX12 model)
Q: How often do spiral flights need replacement?
A: Typically 18-24 months with proper maintenance in silica sand applications.
Q: Can spirals handle sticky clay materials?
A: Yes, when equipped with high-pressure spray bars (8-10 bar).
A 200tph plant processing river sand achieved:
– 95% +75μm particle removal
– <3% moisture content in final product
– Dual SX20 spirals operating at 14° slope
The system replaced traditional bucket wheel washers, reducing water consumption by 40%.
