Spiral Classifier
Main features of Single Screw Classifiers
1. Adjustable weirs
2. Sealed, submerged bearing
3. Optional automatic lubrication system
4. Rigid tank and substructure
5. Wide choice of tank design
6. Overflow collection box
7. Wide range of industries serviced
8. Single spiral range from 300 mm to 2 200 mm
9. Duplex spiral models 1 500 mm and 2 200 mm
Brief Introduction:
High weir type ore spiral classifier: the top side of spiral blade is higher than the flooding level and the center of the blade is lower than the flooding level. This type is used for classification of ore with flooding size between 0.83-0.15.
Spiral classifiers are widely used in the distribution of ore in closed circuits with ball mills, grading ore and fine slit in gravity mills, grading granularity and flow of metal ore-dressing, and de-sliming and dehydrating in washing.
Single screw Classifiers are suitable for
1. Separation of fine particles and liquid from coarse particles
2. Separation of light particles from heavy particles
3. Separation of the particles into a number of products graded according to size
4. Separation of liquid from solid particles
Classification of classifier:
The classifier is widely used with a ball mill to make a closed-circuit circulation to classify the mineral sands, or to classify ore sand and fine silt in gravity mill. It is also applied to classifying granularities in metal mineral separation, or desliming and dewatering in ore washing. The classifier features simple structure, reliable and easy operation.
The spiral classifier mainly includes the single spiral classifier and double spiral classifier. According to the different depth immersed by the spiral blade of overflow, it has the following two kinds:
1. High weir type: the top of spiral blade upper than overflow surface and spiral center lower than overflow surface. Mainly used for the grading of minerals of overflow size 0.83-0.15mm.
2. Immersed type: spiral blade completely immersed below overflow surface. Mainly used for the grading of minerals of overflow size 0.15-0.07mm.
Explanation of model: like: “2FG-15”,in which, “2” indicates double spiral, no indication by the single spiral; “F” indicates the spiral classifier; “G” indicates high weir type, or “C” indicates immersed type; “15” indicates spiral diameter, unit dm.
Technical parameters of classifier:
| type | model | spiral
diameter
(mm) | water
tank
length
(mm) | spiral
rotating
speed
(r/min) | capacity
(t/d) | gradient
(°) | spiral
weight(t) | power
(kw) | overall
dimension
(mm) | weight
(kg) |
| return
sand | overflow | transmission | hoisting |
| high
weir
classifier | FG500 | φ500 | 4500 | 8～12.5 | 135～210 | 32 | 14-18.5 | 0.75 | 1.5 | | 6409×712×1599 | 1980 |
| FG750 | φ750 | 5500 | 6.0-10.0 | 340～570 | 65 | 14-18.5 | 1.1 | 3.0 | | 6300×1250×1780 | 3005 |
| FG-1000 | φ1000 | 6500 | 5.0～8.0 | 675～1080 | 110 | 14-18.5 | 1.9 | 7.5 | | 7100×1330×2390 | 5310 |
| FG-1200 | φ1200 | 6500 | 5.0～8.0 | 1170～1870 | 155 | 14-18.5 | 3.7 | 7.5 | 0.4 | 7560×1572×2328 | 8000 |
| FG-1500 | φ1500 | 8300 | 4.0～6.0 | 1830～2740 | 235 | 14-18.5 | 5.1 | 11 | 0.4 | 9740×2000×4100 | 9800 |
| FG-2000 | φ2000 | 8400 | 3.0～3.5 | 3240～5400 | 400 | 14-18.5 | 7.1 | 11 | 2.8 | 10000×2570×4468 | 20500 |
| FG-2400 | φ2400 | 9200 | 2.5～4.0 | 4650～7450 | 580 | 14-18.5 | 10.2 | 11-15 | 2.8 | 10800×2980×4700 | 25700 |
| 2FG-1200 | φ1200 | 6500 | 5.0～8.0 | 2340～3740 | 310 | 14-18.5 | 3.7×2 | 5.5×2 | 0.4×2 | 8060×3400×3100 | 13300 |
| 2FG-1500 | φ1500 | 8300 | 4.0～6.0 | 3660～5480 | 470 | 14-18.5 | 5.1×2 | 7.5×2 | 0.4×2 | 9740×3630×4050 | 22100 |
| 2FG-2000 | φ2000 | 8400 | 3.0～5.5 | 6480～10800 | 800 | 14-18.5 | 7.1×2 | 11×2 | 2.8×2 | 10000×4600×4470 | 36500 |
| 2FG-2400 | φ2400 | 9200 | 2.5～4.0 | 9300-14900 | 1160 | 14-18.5 | 10.2×2 | 15×2 | 2.8×2 | 10800×5400×4700 | 45800 |
| 2FG-3000 | φ3000 | 12500 | 2.0～3.2 | 14600～23400 | 1785 | 14-18.5 | 20×2 | 18.5×2 | 4×2 | 15600×6640×6350 | 73000 |
| immersed
classifier | FC-1000 | φ1000 | 7600 | 5.0～8.0 | 675～1080 | 85 | 14-18.5 | 2.4 | 7.5 | 0.4 | 10000×1680×4000 | 6000 |
| FC-1200 | φ1200 | 8400 | 5.0～8.0 | 1170～1870 | 120 | 14-18.5 | 4.8 | 7.5 | 0.4 | 10000×1880×4190 | 9280 |
| FC-1500 | φ1500 | 10500 | 4.0～6.0 | 1830～2740 | 185 | 14-18.5 | 6.4 | 11 | 0.8 | 12200×2100×4900 | 12570 |
| FC-2000 | φ2000 | 12900 | 3.0～3.5 | 3240～5940 | 320 | 14-18.5 | 8.6 | 11-15 | 2.8 | 14500×2880×5500 | 29100 |
| FC-2400 | φ2400 | 14200 | 2.5～4.0 | 4650～7450 | 455 | 14-18.5 | 12.8 | 11-18.5 | 4.0 | 15900×3300×6000 | 41000 |
| 2FC-1200 | φ1200 | 8400 | 5.0～8.0 | 2340～3740 | 240 | 14-18.5 | 4.8×2 | 7.5×2 | 0.4×2 | 10000×3700×4190 | 19600 |
| 2FC-1500 | φ1500 | 10500 | 4.0～6.0 | 3660～5480 | 370 | 14-18.5 | 6.4×2 | 7.5×2 | 0.8×2 | 12200×3840×4850 | 30700 |
| 2FC-2000 | φ2000 | 12900 | 3.0～5.5 | 6480～11800 | 640 | 14-18.5 | 8.6×2 | 15×2 | 2.8×2 | 14500×4910×5500 | 50000 |
| 2FC-2400 | φ2400 | 14200 | 2.5～4 | 9300～14900 | 910 | 14-18.5 | 12.8×2 | 18.5×2 | 4×2 | 15900×5730×6000 | 67900 |
| 2FC-3000 | φ3000 | 14300 | 2.0～3.2 | 14600～23400 | 1410 | 14-18.5 | 24.1×2 | 22×2 | 4×2 | 17700×7000×8000 | 84900 |
