Screw Classifier
Washing & Classification Equipment
Screw Classifier
An inclined spiral mechanism used for wet classification based on sedimentation rates.
• Separates ultra-fines and slimes from usable sand fractions.
• Commonly used in silica beneficiation and clay removal stages.
Features: Adjustable screw pitch and speed, overflow weir, settling tank.
Benefits: Enhances purity, improves yield consistency, and reduces downstream load on dryers and screens.
• Separates ultra-fines and slimes from usable sand fractions.
• Commonly used in silica beneficiation and clay removal stages.
Features: Adjustable screw pitch and speed, overflow weir, settling tank.
Benefits: Enhances purity, improves yield consistency, and reduces downstream load on dryers and screens.
Inclined Spiral Separation for Wet Classification & Clay Removal
Our Screw Classifier is a precision-engineered system designed for wet classification of sand and slurry based on sedimentation rates. Using an inclined spiral mechanism, it separates ultra-fines and slimes from usable sand fractions—enhancing product purity and reducing downstream load on dryers and screens.
- Design: Adjustable screw pitch and speed, overflow weir, settling tank
- Function: Sedimentation-based separation of fine particles from coarse sand
- Applications: Silica beneficiation, clay removal, mineral washing, slurry classification
- Benefits: Improves yield consistency, reduces moisture carryover, and enhances downstream efficiency
Optimized spiral geometry ensures accurate separation of usable sand from slimes and clays.
Precise control over screw speed and weir height allows tailored separation for varying feed conditions.
Seamless integration ensures stable flow and reduced load on drying and screening units.
Tailored to plant layout, slurry characteristics, and classification goals.
Technical Specification
| Description | Unit | Model SC-450 | Model SC-600 | Model SC-750 | Model SC-1000 |
| Screw Diameter | mm | 450 | 600 | 750 | 1000 |
| Screw Length | mm | 6000 | 6000 | 6000 | 6000 |
| Rated Capacity* | TPH | 10 | 12 | 15 | 25 |
| Drive Power | kW(HP) | 3.7 (5.0) | 3.7 (5.0) | 5.5 (7.5) | 7.5 (10.0) |
| Trough Type | — | Inclined Tub | Inclined Tub | Inclined Tub | Inclined Tub |
| Material Compatibility | — | Silica, M-Sand, Clay | Silica, Foundry Sand | Silica, Construction Sand | Silica, Glass Grade |
| Moisture Reduction (Final) | % | ≤25 | ≤25 | ≤25 | ≤25 |
| Separation Efficiency* | % | ~90 | ~90 | ~90 | ~90 |
| Construction Material | — | MS / SS | MS / SS | MS / SS | MS / SS |
| Surface Finish | — | Painted / Powder Coated | Painted / Powder Coated | Painted / Powder Coated | Painted / Powder Coated |
| Mounting Type | — | Skid / Frame | Skid / Frame | Skid / Frame | Skid / Frame |
*Capacity and separation efficiency vary with feed gradation, slurry density, and screw pitch.