High Weir Spiral Classifier



Classifying equipment takes use of the different sedimentation speed of the solid particle in slurry.

【 Capacity 】:

10~1785 t/d


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


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

【Product Structure】

structure-High Weir Spiral Classifierstructure-High Weir Spiral Classifier

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High spiral classifier operation: 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.

【Technical Parameters】

Type Model Rotating Speed of Spiral (r/min) Capacity of Sand Return (t/d) Capacity of Overflow (t/d) Spiral Diameter (mm) Spiral Length (mm) Slope of Water Tank Drive Motor Model Drive Motor Power (kW) Lifting Motor Model Lifting Motor Power (kW) Weight (kg)
High Weir Single Spiral Classifier FLG-300 7.7 30 ~80 10-30 Φ300 3900 14 ~18 Y100L1-4 2.2 Manualdriven 668
FLG-500 8 145~260 21-32 Φ500 4390 Y112M-6 1600
FLG-750 7.8 256~654 31-65 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 1140~2740 235 Φ1500 8265 Y160M-6 7.5 Y100L1-4 2.2 11827
FLG-2000 3.6,5.5 3890~5940 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 Spirals Classifier 2FLG-1200 5,6,7 2340~3200 310 Φ1200 6500 Y132M2-6 5.5X2 Y90L1-4 1.5X2 15840
2FLG-1500 2.5,4,6 2280~5480 470 Φ1500 8230 Y160M-6 7.5X2 Y100L1-4 2.2X2 22903
2FLG-2000 3.6,5.5 7780~11880 800 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

【Successful case】

High Weir Spiral Classifier

A concentration in Guangxi often wasted a lot of resources due to uneven ore particle size, then the client found Xinhai spiral classifier manufacturer through search engine. According to the customer requirements and existing equipment configuration, Xinhai technical personnel recommended high weir spiral classifier who can pre-classify. The hierarchic flooding size of Xinhai high weir spiral classifier is equal or greater than 0.015 mm, which meet the needs of customer, and it also has a remarkable application effect, the recovery rate increased by 15%.