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    Screw Classifier

    Screw Classifier

    Screw Classifier

    • Simple structure
    • Reliable operation
    • Convenient maintenance
    • Low cost, high efficiency
    Overview

    Classification and Application Scope

    The screw classifier is also called spiral classifier. There are mainly four types of classifiers, namely high weir single spiral classifier, high-weir dual spiral classifier, sinking single spiral classifier and sinking dual spiral classifier.

    Screw Classifier

    The classifier can form a closed circuit with the ball mill for distributing the ores, grading the ores and fine mud in the gravity mills, grading slurry in the metal ore dressing procedure or for desliming and dehydrating in ore dressing process.

    Features

    1. Simple structure

    2. Reliable operation

    3. Convenient maintenance

    4. Low cost

    5. High efficiency

    Working Principle

    According to the principle that different particle sizes with different proportion have certain terminal velocity, the fine particles float on the water and overflow out while the coarse particles sink to the bottom and then they will be pushed upward and discharged. The powders will be filtered, with the substandard particles screwed into the feeding port by the spiral vanes and the fine ones discharged from the overflow pipe. The head of the screw axis and the shaft adopt the pig iron cover, which is wear-resisting and durable. There are manual and electric lifting devices separately.

    The Structure

    The classifier is composed of the transmission device, the spiral, the trough, the lifting mechanism, and the lower bearings (bush) and the discharge valve.

    Technical Data
    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-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 40 8 17091 6640 8680 84.8

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