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Spiral Classifier

 

 

Spiral Classifier Application:

 

The mill and classifier are a correlated set. The effect of classifier has impact on the efficiency of mill. So it is a key point in the mineral separation process to select well the classifying equipment. The spiral classifier can be divided into the single spiral classifier and double spiral classifier according to the spiral axle quantity.

It is divided into the high weir type, the low weir type, and the sinking type according to the overflow weir height. This instruction is only for the low weir type and the sinking type. The overflow position of high weir type of spiral classifier is above the center of the lower spiral axle but below the upper part of the overflow spire. It has certain falling area, applicable for classifying rough granules to obtain an overflowing force more than 100mesh. The whole screw of the sinking type of spiral classifier at the overflow end sinks below the liquid surface of the falling section which has a large area and depth. So it is applicable for classifying fine granules to attain an overflow granularity of less than 100mesh.  

 

 

Spiral Classifier working principle

 

The classifier is grading equipment, according to the principle that solid particles size and proportion are different, thus the settling velocity in liquids is different, fine mineral particles floating in the water to overflow out, the crude ore particles settling to the bottom, then discharged by the spiral into the upper part, to carry out grading.

It is able to grade and filter the material which grinds to powder by grinding mill, then use of helix vane, send the coarse material into mill feed mouth, and filter out the fine material discharged from the overflow pipe

 

Spiral Classifiers are suitable for:

 

1. Separation of fine particles and liquid from coarse particles

2. Separation of light particles from heavy particles

3. Separation of the particles into a number of products graded according to size

4. Separation of liquid from solid particles

 

 

Main features of Spiral Classifiers:

 

1.       Adjustable weirs

2.       Sealed, submerged bearing

3.       Optional automatic lubrication system

4.       Rigid tank and substructure

5.       Wide choice of tank design

6.       Overflow collection box

7.       Wide range of industries serviced

8.       Single spiral range from 300 mm to 2 200 mm

9.       Duplex spiral models 1 500 mm and 2 200 mm

 

 

Main benefits of Spiral classifiers:

 

1.Energy saving

2.Heavy duty, rugged construction

3.Powerful self-contained spiral lifting device

4.Continuous spiral raking

Optimal particle size range 800 to 75 microns.

 

 

Specifications of Spiral Classifier

 

 

Type

Diameter

(mm)

Rotate speed(r/min)

Length (mm)

Motor power(k w<=)

Dimensions(mm<=)

Weight
(t)

For driving

For lifting

Length

Width

Height

<=

FG-3

300

12-30

3000

1.1

---

3850

490

1140

0.7

FG-5

500

8-12.5

4500

1.1

---

5430

680

1480

1.6

FG-7

750

6-10

5500

3

---

6270

980

1820

2.7

FG-10

1000

5-8

6500

5.5

---

7590

1240

2380

4

FC-10

8400

7.5

9600

1240

2680

6

FG-12

1200

4-6

6500

7.5

2.2

8180

1570

3110

8.5

FC-12

8400

7.5

2.2

10370

1540

3920

11

2FG-12

6500

15

4.4

8230

2790

3110

15.8

2FC-12

8400

15

4.4

10370

2790

3920

17.6

FG-15

1500

4-6

8300

7.5

2.2

10410

1880

4080

12.5

FC-15

10500

7.5

2.2

12670

1820

4890

16.8

2FG-15

8300

15

4.4

10410

3390

4080

22.1

2FC-15

10500

15

4.4

12670

3370

4890

30.7

FG-20

2000

3.6-5.5

8400

11-15

3

10790

2530

4490

20.5

FC-20

12900

11-15

3

15610

2530

5340

28.5

2FG-20

8400

22-30

6

11000

4600

4490

35.5

2FC-20

12900

22-30

6

15760

4600

5640

48.7

FG-24

2400

3.67

9130

15

3

11650

2910

4970

25.7

FC-24

14130

18.5

4

16580

2930

7190

41

2FG-24

9130

30

6

12710

5430

5690

45.8

2FC-24

14130

37

8

17710

5430

8000

67.9

2FG-30

3000

3.2

12500

40

8

16020

6640

6350

73

2FC-30

14300

17091

8680

84.8

 

 

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