The spiral chute has the characteristics of reasonable structure, simple installation, small footprint, simple operation, stable ore beneficiation, large processing capacity, high efficiency, high concentration ratio, high recovery and stable operation. In addition, it has the advantages of light weight, moistureproof performance, rust protection, corrosion resistance, high adaptability and low noise.
When the ore pulp flows near the carved groove edge, vortex will be generated; ore bed will be thickened at the same time, which strengthens the loose stratification effect and the coarse but light minerals separated out from the middling band cross the groove to move outwards. The bottom heavy mineral flows to the inner edge along the groove guide. As a result, the middling quality ore volume decreases and the concentrate metal recovery rate is improved.
Technical Parameters of Spiral Chute
| Model | DL2000 | DL1500 | LL1200 | LL900 | |
| External diameter(mm) | 2000 | 1500 | 1200 | 900 | |
| Inner diameter(mm) | 360 | 250 | 220 | 180 | |
| Screw distance(mm) | 1200 | 900-675 | 720/540 | 540/360 | |
| Ratio(scroll distance/diameter) | 0.6 | 0.6 | 0.6/0.45 | 0.6/0.4 | |
| Transverse obliquity(°) | 9° | 9° | 9° | 9° | |
| Star | 2-4 | 2-4 | 2-4 | 2-4 | |
| Turn | 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 thickness(%) | 20-45 | 30-45 | 30-50 | 30-50 | |
| Processing 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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