A classifier is a device designed for mechanical classification that operates on the principle that solid particles, due to their varying specific gravities, settle at different rates within a liquid medium. Characterized by its simple structure, reliable performance, and ease of operation, this equipment primarily comprises four types: high-weir single-screw, high-weir double-screw, submerged single-screw, and submerged double-screw classifiers.
It is widely applicable in mineral processing plants for forming a closed-circuit system in conjunction with ball mills to classify and divert ore pulp; in gravity concentration plants for classifying ore sands and fine slimes; in metal beneficiation processes for the size classification of ore slurries; and in ore washing operations for tasks such as desliming and dewatering.
A classifier operates on the principle that solid particles of varying sizes and specific gravities settle at different rates within a liquid medium; consequently, fine mineral particles remain suspended in the water and discharge as overflow, while coarse particles settle at the bottom of the tank. The coarse material is conveyed by the rotating spiral blades into the feed port of the grinding mill, while the separated fine material is discharged through the overflow pipe.
Designed for the separation of excess stone powder within dry-process manufactured sand production lines, this equipment meets user specifications and is ideally suited for use in large-to-medium scale dry-process sand-making operations.
Incorporating variable frequency control technology, the system offers simplified operation. The water inlet and shaft ends of the spiral shaft are fitted with cast iron sleeves, ensuring reliable and stable performance.
The quality of the stone powder is easily managed, and its fineness can be adjusted conveniently, flexibly, and reliably; the content of fine particles (ranging from 0.00 to 0.75 mm) is adjustable within a range of 2% to 15%.
The interior features a tile-based lining system, resulting in a low maintenance rate. The base is constructed from channel steel, while the main body is fabricated from welded steel plates, ensuring high structural integrity and exceptional wear resistance.
| Model | Spiral Diameter (mm) |
Trough Length (mm) |
Spiral rotate speed (r/min) |
Processing capacity（t/d） |
Motor Power （kw） |
Dimensions （mm≤） |
||||
| Sand -return |
Overflow | For driving |
For lifting |
Length | Width | Height | ||||
| FG-3 | 300 | 3000 | 12-30 | 80-150 | 20 | 1.1 | ---- | 3850 | 490 | 1140 |
| FG-5 | 500 | 4500 | 8-12.5 | 135-210 | 32 | 1.1 | ---- | 5430 | 680 | 1480 |
| FG-7 | 750 | 5500 | 6-10 | 340-570 | 65 | 3 | ---- | 6720 | 980 | 1820 |
| FG-10 | 1000 | 6500 | 5-8 | 675-1080 | 110 | 5.5 | ---- | 7590 | 1240 | 2380 |
| FC-10 | 8400 | 675-1080 | 85 | 7.5 | ---- | 9600 | 1240 | 2680 | ||
| FG-12 | 1200 | 6500 | 4-6 | 1170-1870 | 155 | 7.5 | 2.2 | 8180 | 1570 | 3110 |
| FC-12 | 8400 | 1170-1870 | 120 | 7.5 | 2.2 | 10370 | 1540 | 3920 | ||
| 2FG-12 | 6500 | 2340-3740 | 310 | 15 | 4.4 | 8230 | 2790 | 3110 | ||
| 2FC-12 | 8400 | 2340-3740 | 240 | 15 | 4.4 | 10370 | 2790 | 3920 | ||
| FG-15 | 1500 | 8300 | 4-6 | 1830-2740 | 235 | 7.5 | 2.2 | 10410 | 1880 | 4080 |
| FC-15 | 10500 | 1830-2740 | 185 | 7.5 | 2.2 | 12670 | 1820 | 4890 | ||
| 2FG-15 | 8300 | 2280-5480 | 470 | 15 | 4.4 | 10410 | 3390 | 4080 | ||
| 2FC-15 | 10500 | 2280-5480 | 370 | 15 | 4.4 | 12670 | 3370 | 4890 | ||
| FG-20 | 2000 | 8400 | 3.6-5.5 | 3290-5940 | 400 | 11-15 | 3 | 10790 | 2530 | 4490 |
| FC-20 | 12900 | 3210-5940 | 320 | 11-15 | 3 | 15610 | 2530 | 5340 | ||
| 2FG-20 | 8400 | 7780-11880 | 800 | 22-30 | 6 | 11000 | 4600 | 4490 | ||
| 2FC-20 | 12900 | 7780-11880 | 640 | 22-30 | 6 | 15760 | 4600 | 5640 | ||
| FG-24 | 2400 | 9130 | 3.67 | 6800 | 580 | 15 | 3 | 11650 | 2910 | 4970 |
| FC-24 | 14130 | 6800 | 490 | 18.5 | 4 | 16580 | 2930 | 7190 | ||
| 2FG-24 | 9130 | 13600 | 1160 | 30 | 6 | 12710 | 5430 | 5690 | ||
| 2FC-24 | 14130 | 13700 | 910 | 37 | 8 | 17710 | 5430 | 8000 | ||
| 2FG-30 | 3000 | 12500 | 3.2 | 23300 | 1785 | 40 | 8 | 16020 | 6640 | 6350 |
| 2FC-30 | 14300 | 23300 | 1410 | ---- | ---- | 17091 | ---- | 8680 | ||
| Model | Spiral Diameter (mm) |
Spiral rotate speed (r/min) |
| FG-3 | 300 | 12-30 |
| FG-5 | 500 | 8-12.5 |
| FG-7 | 750 | 6-10 |
| FG-10 | 1000 | 5-8 |
| FC-10 | ||
| FG-12 | 1200 | 4-6 |
| FC-12 | ||
| 2FG-12 | ||
| 2FC-12 | ||
| FG-15 | 1500 | 4-6 |
| FC-15 | ||
| 2FG-15 | ||
| 2FC-15 | ||
| FG-20 | 2000 | 3.6-5.5 |
| FC-20 | ||
| 2FG-20 | ||
| 2FC-20 | ||
| FG-24 | 2400 | 3.67 |
| FC-24 | ||
| 2FG-24 | ||
| 2FC-24 | ||
| 2FG-30 | 3000 | 3.2 |
| 2FC-30 |