Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

Model NO.: FG-12
Certification: ISO, CE, TUV
Rotation Speed: 0.8-1.2 r/min
Wheel Bucket Diameter: 2600mm
Screw Diameter: 1200mm
Model: Fg-12
Trademark: TSDC
Transport Package: No
Specification: FG-12
Origin: Tangshan
HS Code: 8474201000
Model NO.: FG-12
Certification: ISO, CE, TUV
Rotation Speed: 0.8-1.2 r/min
Wheel Bucket Diameter: 2600mm
Screw Diameter: 1200mm
Model: Fg-12
Trademark: TSDC
Transport Package: No
Specification: FG-12
Origin: Tangshan
HS Code: 8474201000
This product is mainly used for sand factory, electric pole factory, work-site of building and concrete dam to
wash, classifying and de-watering various sands.This sand washer adopt inclination of 15° , under the water
tub, three weir plates form the sediment pool, the screw head is immersed in this pool, the screw is driven by
electric motor through reducer rotating continuously, the fresh water is feeding from porous plate at bottom of
sediment pool, this machine have three functions of washing, de-watering, classifying.

Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

Washing: The sand is feeding into the sediment pool from the feeding box, acting by rotating screw blade, the
sand is turning and rolling and grinding each other to eliminate impurity and water-air layer around sand to
facilitate de-water. The fresh eater rising current from the porous plate carry foreign matter to water surface
and overflow the weir plate, to finish washing processing.

De-watering: The sand with bigger density is sunken down to tub bottom, the screw blade push this sand
upwards, when passing through upper tub of proper length above water level, the water is draining into
sediment pool from another drainage ditch, the de-watered sand is out from the discharging opening.
Classifying: Material classifying is realized by overflowing the non-needed fines, the controlling method is
adjusting height of overflowing weir and adjusting speed of screw.

Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

Spiral Classifier-Product improvement
An automatic elevating apparatus is added to the discharge opening. The scoop in ball mill is eliminated
bringing more stable operation.

Spiral Classifier-Product Application
The overflow spiral blade is higher than overflow level, and the overflow spiral center is lower than overflow
surface. The high wire spiral classifier is applied in the classification of ore with particle size 0.83-0.15mm

Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

Spiral Classifier-Working Principle
The grinded pulp is fed into tank from the inlet in the middle of settlement region, and the slurry classification
sedimentation area is under the inclined tank. The spiral with low speed rotation stirs the slurry, so that the fine
particles rise, and the coarse particles sinks to the bottom of tank. Overflow weir is above the bearing center
which is under screw shaft, and is underneath overflow end.

Spiral Classifier-Product Structure
High weir spiral classifier as the ancillary equipment of grinding to pre-classifying and check classifying is also
applied in de-mudding and dewatering.
 
Model Spiral diameter
 (mm)
Trough length
 (mm)
Spiral rotation
 speed
Production capacity 
(t/d)
Motor power
(kw)
Machine weight
 (t)
(r/min) Back to sand Overflow For 
driving
For
 lifting
FG7.5 750 5500 6-10 340-570 65 3 HM 2.7
FG10 1000 6500 5.0-8.0 675-1080 110 5.5 HM 4.43
FG12 1200 6500 5.0-8.0 1170-1870 155 5.5 1.5 8.7
FG15 1500 8400 4.0-6.0 1830-2740 235 7.5 2.2 12.5
FG20 2000 8400 4.0-6.0 3240-5400 400 11 2.8 20.5
FG24 2400 9210 3.6 4650-7450 580 15 3 25.6
FG30 3000 1250 3.2 11625 890 22 4 37.7
2FG12 1200 6500 5.0-8.0 2340-3740 310 5.5×2 1.5×2 14
2FG15 1500 8400 4-6.0 3660-5480 470 7.5×2 1.5×2 21.1
2FG20 2000 8400 3.0-5.5 7780-11800 800 11×2 2.8×2 36.5
2FG24 2400 9210 3.6 13600 1160 15×2 3×2 46.8
2FG30 3000 12500 2.0-3.2 14600-23400 1785 22×2 4×2 73



Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)
Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)Screw Stone Washer Spiral Classifier for Copper Ores (FG-12) This product is mainly used for sand factory, electric pole factory, work-site of building and concrete dam to
wash, classifying and de-watering various sands.This sand washer adopt inclination of 15° , under the water
tub, three weir plates form the sediment pool, the screw head is immersed in this pool, the screw is driven by
electric motor through reducer rotating continuously, the fresh water is feeding from porous plate at bottom of
sediment pool, this machine have three functions of washing, de-watering, classifying.

Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

Washing: The sand is feeding into the sediment pool from the feeding box, acting by rotating screw blade, the
sand is turning and rolling and grinding each other to eliminate impurity and water-air layer around sand to
facilitate de-water. The fresh eater rising current from the porous plate carry foreign matter to water surface
and overflow the weir plate, to finish washing processing.

De-watering: The sand with bigger density is sunken down to tub bottom, the screw blade push this sand
upwards, when passing through upper tub of proper length above water level, the water is draining into
sediment pool from another drainage ditch, the de-watered sand is out from the discharging opening.
Classifying: Material classifying is realized by overflowing the non-needed fines, the controlling method is
adjusting height of overflowing weir and adjusting speed of screw.

Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

Spiral Classifier-Product improvement
An automatic elevating apparatus is added to the discharge opening. The scoop in ball mill is eliminated
bringing more stable operation.

Spiral Classifier-Product Application
The overflow spiral blade is higher than overflow level, and the overflow spiral center is lower than overflow
surface. The high wire spiral classifier is applied in the classification of ore with particle size 0.83-0.15mm

Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

Spiral Classifier-Working Principle
The grinded pulp is fed into tank from the inlet in the middle of settlement region, and the slurry classification
sedimentation area is under the inclined tank. The spiral with low speed rotation stirs the slurry, so that the fine
particles rise, and the coarse particles sinks to the bottom of tank. Overflow weir is above the bearing center
which is under screw shaft, and is underneath overflow end.

Spiral Classifier-Product Structure
High weir spiral classifier as the ancillary equipment of grinding to pre-classifying and check classifying is also
applied in de-mudding and dewatering.
 
Model Spiral diameter
 (mm)
Trough length
 (mm)
Spiral rotation
 speed
Production capacity 
(t/d)
Motor power
(kw)
Machine weight
 (t)
(r/min) Back to sand Overflow For 
driving
For
 lifting
FG7.5 750 5500 6-10 340-570 65 3 HM 2.7
FG10 1000 6500 5.0-8.0 675-1080 110 5.5 HM 4.43
FG12 1200 6500 5.0-8.0 1170-1870 155 5.5 1.5 8.7
FG15 1500 8400 4.0-6.0 1830-2740 235 7.5 2.2 12.5
FG20 2000 8400 4.0-6.0 3240-5400 400 11 2.8 20.5
FG24 2400 9210 3.6 4650-7450 580 15 3 25.6
FG30 3000 1250 3.2 11625 890 22 4 37.7
2FG12 1200 6500 5.0-8.0 2340-3740 310 5.5×2 1.5×2 14
2FG15 1500 8400 4-6.0 3660-5480 470 7.5×2 1.5×2 21.1
2FG20 2000 8400 3.0-5.5 7780-11800 800 11×2 2.8×2 36.5
2FG24 2400 9210 3.6 13600 1160 15×2 3×2 46.8
2FG30 3000 12500 2.0-3.2 14600-23400 1785 22×2 4×2 73



Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)
Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)Screw Stone Washer Spiral Classifier for Copper Ores (FG-12)

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