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Spiral classifier





Spiral classifier

  • Speed of screw (r/min) : 2.5-8
  • Overflow capacity (t/d) : 10-1785
  • A rotating spiral is used to divide a mixture of different thicknesses into different grain-size levels in the fractionating slot.
Product profile
A rotating spiral is used to divide a mixture of different thicknesses into different grain-size levels in the fractionating slot. 
 
working principle
The slurry is fed into the U-shaped groove from the feed inlet in the middle of the side of the channel. With the low speed rotation of the screw and continuous stirring of the slurry, most light and fine particles are suspended on the top, and overflow from the overflow Weir becomes the overflow product. Coarse and heavy particles will settle at the bottom of the trough (sand sink, pushed by the spiral blade above the chute and discharged, and dehydrated simultaneously during the transportation process. If the sand sinking through the chute into the grinding machine regrinding, the sand into the grinding machine is sand return. 

Benefits

Product advantage
Simple structure, stable and reliable working ability, easy to operate, low in water content for sand return and easy to return sand with grinding machine. It is often used for pre-grading, checking and controlling classification of wet grinding proccessing, and a few equipments are used for dehydration and desliming. 

Technical Data

Type Model Speed of 
screw 
(r/min)
Returned
 sand 
capacity 
(t/d)
Overflow 
capacity 
(t/d)
Diameter of 
screw  
(mm)
Length of 
screw 
(mm)
Slope 
(°)
Driving 
motor
 model 
Driving 
motor
 Power
Lifting 
motor 
model 
Lifting 
motor 
power
Weight
(kg)
    (kW)   (kW)  
High Weir 
single screw
FLG-300 7.7 30 ~80 10 ~30 φ300 3900 14 ~18 Y100L1-4 2.2  Manual 668
FLG-500 8 145~260 21 ~75 φ500 4390   Y112M-6       1600
FLG-750 7.8 100~445 31~165 φ750 5500   Y132S-6 3     2716
FLG-1000 6.7 473~1026 85 φ1000 6556   Y132M2-6 5.5     4000
FLG-1200 5,6,7 1145~1600 150 φ1200 6500   Y132M2-6 5.5 Y90L-4 1.5 7943
FLG-1500 2.5,4,6 1140~2730 235 φ1500 8265   Y160M-6 7.5 Y100L1-4 2.2 11827
FLG-2000 3.6,5.5 3240~5940 400 φ2000 8700   Y160L-6/4 11,15 Y100L2-4 3 20814
FLG-2400 3.6 6800 580 φ2400 9130   Y200L2-6 22 Y112M-4 4 24194
FLG-3000 3.2 11625 890 φ3000 12500   Y200L-4 30 Y112M-4 4 42188
High Weir 
double helix
2FLG-1200 5,6,7 2290~3200 310 φ1200 6500   Y132M2-6 5.5X2 Y90L1-4 1.5X2 15840
2FLG-1500 2.5,4,6 2240~5360 460 φ1500 8230   Y160M-6 7.5X2 Y100L1-4 2.2X2 22903
2FLG-2000 3.6,5.5 6400~10800 750 φ2000 8400   Y160L-4 15X2 Y100L2-4 3.0X2 34621
2FLG-2400 3.63 13600 1160 φ2400 9130   Y200L2-6 22X2 Y112M-4 4X2 42460
2FLG-3000 3.2 23300 1785 φ3000 12500   Y200L-4 30X2 Y112M-4 4.0X2 73030
FLC-1000 2.5~7.4 160~700 50~260 φ1000 8397   Y132M2-6 5.5 手动 5225
FLC-1200 5~7 1150~1640 265 φ1200 8400   Y160M-6 7.5 Y90L-4 1.5 9583

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