A Spiral Chute Separator is a gravity-based mineral processing machine used in mining to separate valuable minerals from gangue (waste material) based on their density differences. It is commonly used for processing fine-grained materials like iron ore, tin, tungsten, tantalum, niobium, gold, coal, and other heavy minerals.
How a Spiral Chute Works:
1. Feeding: The slurry (a mixture of water and ore) is fed at the top of the spiral chute.
2. Gravity Separation: As the slurry flows down the spiral trough, centrifugal force and gravity cause denser particles to settle along the inner edge while lighter particles move toward the outer edge.
3. Collection Points: At the bottom, different collection ports separate the concentrate (valuable minerals), middlings (intermediate product), and tailings (waste).
Key Features:
– No Power Required: Operates solely on gravity and centrifugal force.
– Low Maintenance: Simple structure with no moving parts.
– High Efficiency: Effective for fine particle separation (0.03–6 mm).
– Adjustable Splitters: Allows control over separation precision.
– Environmentally Friendly: Uses water as a medium without chemicals.
Applications:
– Gold & Platinum Recovery
– Chromite & Iron Ore Beneficiation
– Coal Washing
– Rare Earth Minerals (Tantalum, Niobium, Tungsten)
– Beach Sand Mineral Separation
Advantages Over Other Separators:
✔ Cheaper than shaking tables or jig machines
✔ Handles high-capacity feed compared to centrifugal concentrators
✔ Suitable for both laboratory and industrial-scale mining
Limitations:
✖ Less effective for ultra-fine particles (<0.03 mm)
✖ Requires consistent feed density for optimal performance
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