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Working Principle
The working principle of the spiral chute is based on gravity and centrifugal force. The slurry is delivered to the feed inlet at the top of the chute by a slurry pump and then naturally flows downward in a spiral motion. As the slurry moves along the inclined, rotating surface, it generates an inertial centrifugal force. Due to differences in mineral density, particle size, and shape, the combined effects of centrifugal force and gravity separate the minerals of different specific gravity.
Heavier minerals (such as iron ore and ilmenite), having greater gravity and smaller centrifugal force, gradually move toward the inner edge of the spiral and flow into the concentrates chute. Meanwhile, lighter minerals (such as silica sand), with lower gravity and greater centrifugal force, settle more slowly and are pushed toward the outer edge by the transverse circulation, eventually flowing into the tailings chute. This completes the mineral separation process.
Advantages
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Simple Structure: The design is straightforward, easy to install and operate, with low maintenance costs.
High Efficiency: It is highly effective for the beneficiation of fine particles, producing significant mineral concentration results.
Low Energy Consumption: The device relies on gravity for mineral separation, requiring no additional power.
Small Footprint: Suitable for mineral processing plants with limited space, and can be installed in multiple layers to increase capacity.
Environmentally Friendly: The operation is clean and does not generate pollution, minimizing environmental impact.
Technical Parameters
Mining Spiral Chute | |||||||
Model | 5LL-2000 | 5LL-1500 | 5LL-1200 | 5LL-900 | 5LL-600 | 5LL-400 | |
Outside/Spiral Dia (mm) | 2000 | 1500 | 1200 | 900 | 600 | 400 | |
Pitch (mm) | 1200 | 720/540 | 900/720 /540 | 675/540 /405 | 450/360 /270 | 240/180 | |
Pitch Dia Ratio (D/P) | 0.6 | 0.48/0.36 | 0.75/0.6/0.45 | 0.75/0.6/0.45 | 0.75/0.6/0.45 | 0.6/0.45 | |
Lateral Slope | 9° | 9° | 9° | 9° | 9° | 9° | |
Starts | 3 | 4 | 4 | 4 | 2 | 2 | |
Feeding Size (mm) | 2.00-0.04 | 0.8-0.037 | 0.3-0.03 | 0.3-0.03 | 0.2-0.02 | 0.2-0.02 | |
Feeding Density (%) | 30-55 | 30-60 | 25-35 | 25-55 | 25-55 | 25-55 | |
Capacity (T/H) | 7-10 | 6-8 | 4-6 | 2-3 | 0.4-0.8 | 0.15-0.2 | |
Dimension | Length (mm) | 2120 | 1600 | 1360 | 1060 | 700 | 460 |
Width (mm) | 2120 | 1600 | 1360 | 1060 | 700 | 460 | |
Height (mm) | 5600 | 5300 | 5230 | 4000 | 2600 | 1500 | |
Weight | 900 | 800 | 600 | 400 | 150 | 50 | |
The technical parameters provided are for reference only. Final product performance shall be subject to the official technical specifications. |
Successful Cases
Rock Gold Mine - South Sudan | Chromite - South Africa | |
Alluvial Chrome Ore - Zimbabwe | Alluvial Tin Mines - Bolivia | Rock Tin Mines - Indonesia |
Copper Oxide - Russia | Tantalum Niobium Ore - Nigeria | Lithium Mines - Brazil |
Kaolin Mine - Uganda | Lead Zinc Mine - Morocco | Manganese Ore - Kenya | Hematite - South Africa |
FAQ
Q: How to choose spiral chute materials?
A: PU-lined for abrasive ores, HDPE for fine precious metals, fiberglass for budget projects. PU lasts 3x longer than FRP.
Q: What size range can spiral chutes process?
A: Ideal for 0.02-2mm particles. HDPE models handle 0.01mm ultra-fines. Feed density: 20-40%.
Q: How to improve spiral chute recovery?
A: ①Adjust wash water (0.05-0.2MPa) ②Control feed density ③Check PU liner wear regularly.