Gravity Separation

Spiral chutes are advanced gravity separation devices designed to efficiently concentrate minerals based on density differences. Ideal for processing metallic and non-metallic ores with particle sizes between 4-0.02mm, they offer eco-friendly, low-energy separation for minerals like iron, tungsten, tin, zircon, and industrial sands without chemicals.

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Introduction to Spiral Chute Technology

Spiral chutes leverage gravitational and centrifugal forces to separate mineral particles. Feed material enters the top of an inclined helical trough, flowing downward while centrifugal action segregates denser particles toward the inner column and lighter gangue toward the outer edge. Adjustable splitters at the base collect separated concentrates.

Key Advantages:
- Zero Chemical Dependency: Pure physical separation eliminates reagent costs and environmental contamination
- Low Operational Costs: No power requirements beyond initial feed input; minimal maintenance
- High Adaptability: Adjustable pitch, flow rate, and splitter settings accommodate varied ore types
- Compact Modular Design: Space-efficient stacking configurations scale from pilot to industrial plants
- Efficient Recovery: Single-pass recoveries up to 95% for well-liberated minerals
Primary Applications

Mineral Processing

Widely deployed for:
- Metallic Ores: Iron, chromite, tungsten, tin, tantalum-niobium concentrates
- Heavy Minerals: Ilmenite, rutile, zircon, garnet sands, and monazite
- Industrial Minerals: Barite, coal, and phosphate density separation
Recycling & Secondary Recovery

Recovers metals from:
- Electronic waste (PCBs)
- Industrial slag byproducts
- Alluvial placer deposits
Technical Specifications

Optimal performance within 4-0.02mm particle range. Material-specific designs feature corrosion-resistant polyurethane or ceramic-lined surfaces. Feed density typically maintained under 30% solids concentration. Multiple-turn spirals (5-7 rotations standard) enable progressive separation refinement.
Conclusion

Spiral chutes provide a robust, cost-effective gravity solution for mineral beneficiation. Their simplicity yet efficiency in separating fine-grained ores make them indispensable for mining operations prioritizing economical and sustainable separation technologies without complex infrastructure.