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Spiral Chute


 Description of Spiral Chute

The spiral chute is a combination mining equipment of rotating spiral concentrator, shaker and centrifugal concentrator. It can be applied to the mining at waterfront, River, sand beaches and river channel.

This spiral chute is suitable for sorting size 0.3-0.02mm fines iron ore, ilmenite, chromite , pyrite , zircon, rutile , monazite, phosphorus B ore, tungsten ore , tin , tantalum ore, niobium ore and other non-ferrous metals with a specific gravity differences, rare metals and non-metallic minerals.

 Features of Spiral Chute

Stable sorting process, easy to control, wide range of ore concentration, high enrichment ratio, high recovery rate, small footprint, less water consumption, simple structure, large capacity, easy to install, easy to operate and small investment.

Light weight, moisture proof, not rust, corrosion resistance, good adaptability, no noise, etc.

 Working Principle

Erect the spiral chute, calibrate vertical lines, fix it with the metal frame or wood.
Deliver the sand pump onto the top mouth of the spiral chute, add water to adjust the concentration of mineral slurry.
 During the swirl flowing down, the centrifugal force and gravity force will make the sand and mineral separated based on the difference in their specific gravity, particle size and shape.
 The concentrate flow into the concentrate bucket and discharged by pipe, while tailings flow into the tailings bucket and discharged to the sand pond, then drain away by sand pump.

 Technical Parameters

Specification DL2000 DL1500 LL1200 LL900
Outer Diameter (mm) 2000 1500 1200 900
Inner Diameter (mm) 360 250 220 180
The Pitch (mm) 1200 900-675 720/540 540/360
Pitch/Diameter 0.6 0.6 0.6/0.45 0.6/0.4
Inclination Angle (°)
Head 2-4 2-4 2-4 2-4
Number of Turns 3.5 4 4/5 4/5
Feeding Size (mm) 0.4-1 0.03-1 0.03-0.3 0.03-0.3
Feeding Concentration (%) 20-45 30-45 30-50 30-50
Capacity (t/h) 15-40 8-16 4-6 2-3
Area (㎡) 5.7 3.3 2 1.2
Height (mm) 6.6-8 5.5 5.23 3.2
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