Spiral classifier
Spiral classifiers mainly include high weir type single helix and double helix, low weir type single helix and double helix, and sunken type single helix and double helix classifiers. High weir type and sunken type are commonly used models.
Description
Spiral classifiers are widely used in mineral processing plants to form a closed loop with ball mills to classify ore sand, or to classify ore sand and washed mud in gravity mineral processing plants.
Advantages
- Single machine processing capacity is large.
- It can simultaneously realize the functions of ore washing, dewatering, and transportation.
- The propeller and tank body are made of wear-resistant materials, and their service life and continuous operation capability are better than other classification equipment.
Principle
The spiral classifier uses relatively moving propellers to separate materials of different sizes and different settling speeds into layers under the action of gravity. The main structure consists of three parts: transmission device, propeller, and tank body. The specific gravity of different particles in the slurry is different. The coarse ore particles sink to the bottom of the tank and are pushed to the upper part by the spiral and discharged, while the fine ore particles are discharged with the overflow. The grading effect is adjusted by changing the pitch and speed of the propeller.
Specification
| Model | Spiral diameter | Spiral Speed | (Tank) | Capacity t/24h | Drive motor | Lift Motor | |||
| MM | r/min | L mm | W mm | Slope(°） | Over Flow | Returned Sand | kw | kw | |
| FG-5 | Φ500 | 9.2 | 3900 | 560 | 10.5°-14° | 21-75 | 145-260 | 3 | 0 |
| FG-7 | Φ750 | 7.8 | 5367 | 830 | 10.5°-14° | 65-154 | 255-564 | 3 | 0 |
| FG-10 | Φ1000 | 7 | 6500 | 1110 | 10.5°-14° | 85 | 473-1026 | 5.5 | 0 |
| FG-12 | Φ1200 | 5,6,7 | 6500 | 1372 | 10.5°-14° | 150 | 1145-1600 | 5.5 | 2.2 |
| FG-15 | Φ1500 | 2.5,4,6 | 8265 | 1664 | 14°-18.5° | 235 | 1140-2740 | 7.5 | 2.2 |
| FG-20 | Φ2000 | 5.4 | 8400 | 2396 | 14.5°-18.5° | 400 | 5940 | 15 | 2.2 |
| FG-24 | Φ2400 | 3.6,5.4,6.3 | 9160 | 2600 | 14°-18.5° | 580 | 6800 | 11/15 | 2.2 |
| FG-30 | Φ3000 | 3.17 | 12500 | 3200 | 14°-18.5° | 890 | 11650 | 22 | 4 |
| 2FG-12 | Φ1200 | 5,6,7 | 6500 | 2620 | 14°-10.5° | 300 | 2290-3200 | 5.5X2 | 2.2X2 |
| 2FG-15 | Φ1500 | 2.5,4,6 | 8265 | 3200 | 14°-18.5° | 460 | 2240-5360 | 7.5X2 | 2.2X2 |
| 2FG-20 | Φ2000 | 5.4 | 8400 | 4296 | 14.5°-18.5° | 800 | 11880 | 15X2 | 2.2X2 |
| 2FG-24 | Φ2400 | 3.6,5.4,6.3 | 9160 | 5040 | 14°-18.5° | 1160 | 13600 | 11X2/15X2 | 2.2X2 |
| 2FG-30 | Φ3000 | 3.17 | 12500 | 6300 | 14°-18.5° | 1785 | 23300 | 22X2 | 4X2 |