Spiral Classifier

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Working principle of spiral classifier

Spiral classifier is one kind of beneficiation equipment for mechanical grading, and it follows the principle that different solid particles with different proportion have different sedimentation speed in liquid. China spiral classifier can filter powder grinded by milling equipment, and then screws coarse materials in the feeding port of grinding machine by screw panel, finally discharges fine material through the overflow pipe. 

Screw classifiers is referred as classifier. Classifier can be mainly divided into high weir single helices classifier, high weir double helices classifier, sinking single helices classifier and sinking double helices classifier.

Spiral Classifier

A series of classifiers produced by Hongxing Machinery are widely used for shunting mineral sands in dressing plant by combining with ball mills to form closed circuits, or grading ore and fine mud in gravity concentrator, particle size classifying of pulp in metal beneficiation process, as well as the dehydration and other operations in washing operations. The classifier has features of simple structure, reliable operation, easy operation, etc.

Structure of ore spiral classifier

The classifier is mainly composed of transmission device, spiral body, tank, lifting mechanism, the lower bearing (bearing) and discharging valve.

Note

Ore spiral classifier cannot be operated until operator well structure and working principle of the machine.
1, give pulp into classifier after spiral body turning and gradually add feeding amount.
2, if occur special failure in working condition, please immediately stop machine and pull spiral body from slurry to avoid the blockage.
3, when start again, please decline spiral body to a certain position, and then rotate it.
4, if parking is required in the working process, please stop feeding first, and stop machine until materials in machine are completed classified.
5, if blade is worn, grinding fineness will be thicken, in addition, if wear is serious, it will affect the service life of grading machine, so operator should timely check and replace worn blades.

Parameters
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 11.0
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 41.0
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 73.0
2FC-30 14300 23300 1410 ---- ---- 17091 ---- 8680 84.8

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