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Spiral classifiers can grade different particles in ore slurry during the metal beneficiation process as well as deslime and dehydrate in the washing operation.
The spiral classifier is a device that utilizes the principle of different sedimentation speeds of solid particles in a liquid based on their specific gravity for mechanical classification. It is widely used in closed-circuit processes in conjunction with ball mills to separate and classify ore sand in mining plants. It can also be applied in gravity separation plants for classifying ore sand and fine mud, as well as in metal ore dressing processes for size classification of ore pulp. Additionally, it finds application in de-sliming and dewatering operations during ore washing.
Types: There are four classifiers: high weir single spiral and double spiral, submerged single spiral and double spiral.
The working principle of the spiral classifier is based on the different sedimentation speeds of solid particles in a liquid due to their varying specific gravities. When the ore pulp enters the tank from the side feed inlet, it forms a sedimentation zone at the bottom of the tank. The slowly rotating spiral provides a certain degree of agitation to the pulp. After agitation, the light and fine particles suspend on the surface, forming an overflow that flows over the weir at the end of the water tank into the next mineral processing step. The heavy and coarse particles settle at the bottom of the tank, forming a return sand that is transported by the spiral to the discharge port for removal, thus achieving the desired classification.
The spiral classifier mainly consists of the following components:
Model | Spiral Diameter (mm) | Trough Length (mm) | Spiral rotate speed (r/min) | Processing capacity(t/d) | Motor Power(kw) | Dimensions(mm≤) | Total weight (t) | ||||
Sand -return | Overflow | For driving | For lifting | Length | Width | Height | |||||
FG-3 | 300 | 3000 | 12-30 | 80-150 | 20 | 1.1 | —- | 3850 | 490 | 1140 | 0.7 |
FG-5 | 500 | 4500 | 8-12.5 | 135-210 | 32 | 1.1 | —- | 5430 | 680 | 1480 | 1.9 |
FG-7 | 750 | 5500 | 6-10 | 340-570 | 65 | 3 | —- | 6720 | 980 | 1820 | 3.1 |
FG-10 | 1000 | 6500 | 5-8 | 675-1080 | 110 | 5.5 | —- | 7590 | 1240 | 2380 | 4.9 |
FC-10 | 8400 | 675-1080 | 85 | 7.5 | —- | 9600 | 1240 | 2680 | 6.2 | ||
FG-12 | 1200 | 6500 | 4-6 | 1170-1870 | 155 | 7.5 | 2.2 | 8180 | 1570 | 3110 | 8.5 |
FC-12 | 8400 | 1170-1870 | 120 | 7.5 | 2.2 | 10370 | 1540 | 3920 | 11 | ||
2FG-12 | 6500 | 2340-3740 | 310 | 15 | 4.4 | 8230 | 2790 | 3110 | 15.8 | ||
2FC-12 | 8400 | 2340-3740 | 240 | 15 | 4.4 | 10370 | 2790 | 3920 | 17.6 | ||
FG-15 | 1500 | 8300 | 4-6 | 1830-2740 | 235 | 7.5 | 2.2 | 10410 | 1880 | 4080 | 12.5 |
FC-15 | 10500 | 1830-2740 | 185 | 7.5 | 2.2 | 12670 | 1820 | 4890 | 16.8 | ||
2FG-15 | 8300 | 2280-5480 | 470 | 15 | 4.4 | 10410 | 3390 | 4080 | 22.1 | ||
2FC-15 | 10500 | 2280-5480 | 370 | 15 | 4.4 | 12670 | 3370 | 4890 | 30.7 | ||
FG-20 | 2000 | 8400 | 3.6-5.5 | 3290-5940 | 400 | 11-15 | 3 | 10790 | 2530 | 4490 | 20.5 |
FC-20 | 12900 | 3210-5940 | 320 | 11-15 | 3 | 15610 | 2530 | 5340 | 28.5 | ||
2FG-20 | 8400 | 7780-11880 | 800 | 22-30 | 6 | 11000 | 4600 | 4490 | 35.5 | ||
2FC-20 | 12900 | 7780-11880 | 640 | 22-30 | 6 | 15760 | 4600 | 5640 | 48.7 | ||
FG-24 | 2400 | 9130 | 3.67 | 6800 | 580 | 15 | 3 | 11650 | 2910 | 4970 | 26.8 |
FC-24 | 14130 | 6800 | 490 | 18.5 | 4 | 16580 | 2930 | 7190 | 41 | ||
2FG-24 | 9130 | 13600 | 1160 | 30 | 6 | 12710 | 5430 | 5690 | 45.8 | ||
2FC-24 | 14130 | 13700 | 910 | 37 | 8 | 17710 | 5430 | 8000 | 67.9 | ||
2FG-30 | 3000 | 12500 | 3.2 | 23300 | 1785 | 40 | 8 | 16020 | 6640 | 6350 | 73 |
2FC-30 | 14300 | 23300 | 1410 | —- | —- | 17091 | —- | 8680 | 84.8 |
1.Are you a manufacturing or trading company?
We are manufacturer. Our factory established in 2004.
2.What is the after-service of your company?
We can provide the foundation drawing, installation service, training, spare parts and other service according to the customer’s requirements.
3. Which mineral processing method should I choose?
According to the properties of minerals, we will choose the treatment method that most suitable for you.
4. What machines are usually required for the whole production line?
Usually there are feeder, primary and secondary crushers, vibrating screen, ball mill, classifier, spiral chute, magnetic or flotation machine, dryer, etc. Equipment can be adjusted.
5. What is the final mineral concentration?
It depends on the ore grade. The final concentration of gold ore can reach 80-90%.
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