Spiral Classifier

Spiral Classifier

The spiral classifier is commonly used in mineral processing plants to classify slurry particles in closed circulation with the ball mill. It is also effective in washing, desliming, and dehydrating sand in large and medium dry sand making plants.

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Brief Introduction

Spiral classifiers are divided into single spiral classifiers and double spiral classifiers. According to the procedure of how deeply the spiral blades at the overflow end are immersed in the overflow surface, they can be further divided into high weir classifiers and immersed classifiers.

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Applied Materials

The spiral classifier can classify, wash and deslime materials suitable for wet ball mills. Its applicable materials are metal ores (such as gold ore, iron ore, copper ore), non-metallic ores (such as quartz, gypsum, cobblestone), cement clinker, etc. with an overflow particle size of 25 to 90.

Applied Materials

Technical Parameter

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
Working Principle

Working Principle

The spiral separator sorts materials by the speed at which solid particles settle in liquid. It sifts crushed powder from the mill, with fine particles flowing over and coarse ones settling at the tank bottom. Coarse particles return to the mill for further grinding, completing a closed circuit with the spiral classifier and ball mill.

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Performance Advantages

  • 01.

    Enhanced operational convenience

    The equipment features a simple structure and frequency conversion control for ease of operation.

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  • 02.

    Precise control over stone powder quality

    The quality of stone powder is easy to control, and the content of 0.00–0.75 mm stone powder is adjustable between 2% and 15%.

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  • 03.

    Effective grading control

    The design incorporates appropriate pulp tank depth, area, and spiral structure, facilitating efficient grading control.

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  • 04.

    Low maintenance rate and strong wear resistance

    It is lined with tiles and has low maintenance rate. The base is made of channel steel and the machine body is welded with steel plates, which has good quality and high wear resistance.

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Related Projects

It is lined with tiles and has low maintenance rate. The base is made of channel steel and the machine body is welded with steel plates, which has good quality and high wear resistance.

Additionally, we prioritize ESG (Environmental, Social, and Governance) initiatives, actively advocating for the sustainable advancement of eco-friendly mining and recycling sectors.

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