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Concentrators with vibratory screens

NEW!!!NEW!!!NEW!!!

  • Portable centrifugal industrial concentrator CKV05
  • Vibratory Screen Classifier ( 20 mesh)
  • THE TECHNOLOGY.  

1. CKV concentrators recover 3micron size gold.

2. Process 500kg/hour

3. Portable- weighs 25kg.

4 Works on recirculating Muddy water 5 Feed material up to 30mm size

 

How it works:

1.  All feed slurry material with gravel up to 30mm size, feed in vibratory screen and classified to 0.8 mm size - oversized material reject to tailings

2. Minus 0.8mm material feed in Centrifugal Vibratory bowl. Gold and other heavy valuables  concentrate in bowl- rest material discharged to tailings or to flotation concentrator for further processing

Advantage of such configuration is economical way of use  body vibration existed in previous CK model for screening of material.  

 

25 kg weight most portable industrial duty centrifugal concentrator  for 3 - 5 micron size finest gold recovery. Fluidization water is not required , possibility to operate on recirculated  water.  150G-force compare to 60G  other brands

Most alluvial gold mining done till this days  by old-fashion  way with use  sluices or jigs. Analysis done for  old workings shows , that half gold mined is lost in tailings. Most gold particles lost are in sizes from 5 to 100 microns. CKV concentrators the only portable centrifugal concentrators on the market, which  can recover 3 microns gold. For comparison , 80 micron is smallest gold can be recovered with best panning.
 

Applications:
- in evaluation of content of precious metals and other valuable heavy minerals in geological samples in geological exploration of alluvial and ore deposits, as well as industrial waste of old mines;

- in processing of low-grade gravity concentrates produced at sluices, in reprocessing of tailings of jig units, concentration tables and magnetic-liquid separators, containing fine to micron sizes gold at placer gold mining.

- in processing high-grade gravity concentrates produced at sluices of refinery plants, industrial centrifugal concentrators of classifying type (KNELSON, FALCON, ITOMAK, etc.), as well as in reprocessing of tailings of jig units and concentration tables and in processing of old tailings in prospectors’ teams and at gold recovery plants.

- for the evaluation of the operation of mineral processing plants  on the basis of complex mineral technological analysis of the products of minerals processing.

 

INNOVATION FOR GEOLOGISTS AND INDIVIDUAL GOLD MINERS!

Technological advantages:
- the possibility to produce concentrates of fine, fine-dispersed and dust gold and platinum: class

-0.5 + 0.25 mm – 98-100%; class -0.25 + 0.1 mm – 97-98%; class -0,1+ 0.05 mm – 96-97%; class -0.05 + 0.015 mm – 80-96%; class –o.015 + 0,01 mm – 68-80%;

-  processing of  concentrates containing up to 80 % of heavy minerals (magnetite, pealite, chromespinelide, etc.);

-  extraction exhisted  concentrates of  gold and platinum with grain size of 3…5 microns ,

-  extraction of mercury from concentrate;  

- environmental safety of the technological process;

- high economical efficiency;

- the possibility to operate on recirculated water;

- rubber replaceable bowls  of the concentrating cup considerably accelerate the process of concentrate discharge without time losses

 

The technical specifications of CKV concentrators:

 

Model

price

FOB

CKV0.5

 

 

CKV6

 

 

CKV10

 

 

CKV20

 

 

CKV50

 

 

Feeding Capacity(t/h)

0.5

6

10

20

50

Screen size mm

380

600

800

1100

 1500

Pulp dilution (solid to liquid ratio)for alluvial / ores

1:4/1:8

1:4/1:8

1:4/1:8

1:4/1:8

 1:3/1:8

Reduction

2000

18000

20000

15000

12500

Feeding size(mm)

0-25

0-30

0-30

0-30

 0-30

Concentration Cleaning Up Cycle

Vein gold 1-4 Hours Placer gold “3-10 Hours

Concentrate weight(g)

40-80

180

250

650

2000

Power Requirements(Kw)

0.25

0.55

1,3 (0,55 + 0,75)

1,5 (1,1 + 0,37)

3.7 (2.2+ 1.5

Approximate shipping weight(Kg)

25

120

148

187

370

Approximate shipping Dimensions (mm)

460x500x600

772x610x872

810x860x925

1100x1150x1150

 

1500x1550x1200

 

Comparative tests of various types of centrifugal concentrators

 

Centrifugal concentrators used in enrichment of primary and alluvial gold ores and alluvial gold sands with recovery most fine gold compare to other concentrators. Centrifugal concentrators can be divided into two basic types according to the method of loosening beds:

1. by spraying water through a bed precipitated through numerous holes in the walls of the channels for loosening of the bed -concentrators like "Knelson" and "Falcon".The principle of operation of the hubs like "Knelson" and "Falcon" is well documented in the literature . Centripetal acceleration in the bowls of these devices reach values 50-150 g.

2. The other type centrifugal concentrators are high-frequency vibrations or deformations. New invented CK concentrators are centrifugal vibration type . With Know-How simple and reliable vibration unit there was overcome many problems , which was exist in previous models centrifugal vibration type concentrators.

Absorbing bowl hub of CK concentrators rotates around the vertical axis and makes planetary oscillations with a frequency greater than 100 Hz and an amplitude of 1.5-3 mm . In this case, the planetary acceleration is 1.5-2 times higher than the centripetal , the total acceleration is achieved 45-90 g depending on the configuration.

In high frequency deformation type TSKPP concentrators loosening the bed of the hub is achieved with three crimping rollers rotating around flexible hub. In such circumstances, the bed begins to " breathe" , clenching and unclenching three times per revolution of the bowl. This leads to high ripple bed, wherein the maximum value of acceleration in the bowl channels can reach 200-300 g.

This types more closed to CK concentrators in performance.

 

Test shows that the CK concentrators have better recovered mineral particles with high densities of less than 40 microns, than apparatus of the type "Knelson" and "Falcon".

This article presents the results of comparative tests of 3 hubs that are comparable in performance : Knelson- 3 "( with a diameter of about 75 mm cup ), Falcon SB- 40 (100 mm ) , CK-02 (100 mm). In channels hubs of "Knelson" and "Falcon" concentrators , as already mentioned , the loosening of bed created by water flow through the pinholes . That is the main reason of disadvantage in performens , especially with very fine and very flat gold particles with big surface. Sprey water flow just wash out such particles.

At CK concentrators hubs with mechanical loosening of the bed there is a reverse process occurs in segregation of particles , ie sieving of fine particles through the spaces between the larger grains.

 

In JSC Mekhanobr Engineering ( St. Petersburg, Russia) test has been done on artificial mixtures of magnetic mineral with density 7g/cm3 granular ferrosilicon and tungsten powder 19.1g/cm3 ( gold simulating). This technique allows to determine the efficiency of the machines without a chemical analysis . Comparative tests were carried out hubs with quartz sand (density -2.65 g/cm3 ) with particle size less than 0.3 mm , which was mixed with small amounts ferrosilicon brand FS - 15G -3 production JSC "Novokuznetsk ferro (density - 7 g/cm3). In other mix: ferrosilicon brand FS - 15G -3 production JSC "Novokuznetsk ferro, with added small fractions of powdered tungsten (density - 19.1 g/cm3 similar to gold ).

Separation of ferrosilicon from quartz and tungsten was carried out on a magnetic separator with high intensity magnets and a special analyzer with a traveling electromagnetic field , which provided almost absolute separation of magnetic and non-magnetic particles.

Results of experiments conducted under optimal conditions revealed that the concentrator "Knelson" and "Falcon" have similar performance when allocating ferrosilicon quartz and tungsten - of ferrosilicon ( Table 1). In CK concentrator there is much better extraction of fine particles with higher density than the apparatus in which the bed is loosening of the flow of water weighing .

 

In other tests we present the results of enrichment of gold sand ( particle size less than 1 mm) of the alluvial deposits , in which there was a significant amount of gold particles less than 70 microns. The final enrichment of concentrate was made on concentration table SKL- 2 (Test 1 , Table 2). Results of experiments on the same sample enrichment sand carried by centrifugal concentrators in optimal control modes separation tails showed that CK concentrators fine particles allows better extraction of native gold fine particles than Knelson- 3 " - 92 % vs 90.2 % ( Test 2-4, Table 2). Minimum size of gold particles found in the concentrate control 2 Knelson- 3 "- 20-22 microns (Test 2 . Table 2) , whereas the concentrate is generally 1 CK it is 12-15 microns , and a control - 10-12 microns ( Test 4 , Table 2).

 

Table number 1

The results of tests of various types of centrifugal concentrators on artificial mixtures:

Feed material

Concentrator model

Size of FS particles, microns

Concentrate output , %

Heavy content FS in concentrate %

Output of heavies FS from Quartz, %

Quartz with ad 1% of ferrosilicon FS

Knelson-3"

30

8,3

10,2

86,6

 

Falcon SB-40

 

7,8

11,1

86,6

 

CK

 

8,3

11,6

96,2

 

 

 

 

 

 

 

Knelson-3"

20

8,0

7,7

61,7

 

Falcon SB-40

 

7,8

7,9

61,5

 

CK

 

8,0

10,8

86,5

 

 

 

 

 

 

ferrosilicon FS 15G-3 with ad of 0.5% of Tungsten particles (gold substitute)

Knelson-3"

15

31,1

1,0

62,3

 

Falcon SB-40

 

27,1

1,1

60,1

 

CK

 

30,1

1,3

80,3

 

Table number 2

The results of enrichment of gold sands

Materials

Output, %

Gold content, g/t

Gold extraction, %

Smallest gold size in extraction, microns

Test1. Extraction with pan and further enrichment on concentrate on the concentration table SKL-2

Concentrate

1,5

200

68,2

80

Tailings

98,5

1,4

31,8

 

Feed material

100

4,4

100

 

Test 2. Separation of Knelson-3 "(concentrate 1) with control enrichment of tailings (concentrate 2)

Concentrate1

0,64

320,1

90,2

30-35

Concentrate2

0,64

35,1

5,1

20-22

Total concentrate

1,28

327,6

95,3

 

Tailings

98,72

0,21

4,7

 

Feed material

100

4,4

100

 

Test 3. Separation on CK concentrator (concentrate 1) with the control enrichment tailings on the same CK concentrator(Concentrate 2)

Concentrate1

0,63

342.5

92,0

12-15

Concentrate2

0,58

51,6

6,8

10-12

Total concentrate

1,21

359,3

98,8

 

Tailings

98,79

0,053

1,2

 

Feed material

100

4,4

100

 

 

When enrichment rough gravity concentrate produced from copper-zinc sulphide ore grinding circuit, centrifugal concentrators "Knelson-3" and CK showed almost identical results (Table 3). From this relatively coarse-grained product (18% of the class less than 74 microns) into the head of the table of the concentration of SCR-2 recovered about 68% of the gold in the gold content in it more than 300 g/t.

 

Table number 3

The results of the centrifugal separation rough gravity concentrate of copper and zinc ore

Products

Output, %

Gold content, g/t

Gold extraction, %

The extraction on "Knelson-3" with further concentration on the concentration table SKL-2

Table concentrate SKL-2

1,15

334,6

68,1

Tailings SKL-2

4,35

2,3

1,8

TOTAL concentrate "Knelson-3"

5,5

71,8

69,9

Tailings "Knelson-3"

94,5

1,8

30,1

Input material

100

5,65

100

Extraction on CK concentrator with further concentration on the concentration table SKL-2

Table concentrate SKL-2

1,25

307,8

68

Tailings SKL-2

10,85

2,1

4

TOTAL concentrate CK

12,1

34

72

Tailings CK

87,9

1,8

28

Input material

100

5,65

100

The advantage of centrifugal concentrators such segregation is especially evident in the gravitational enrichment of very fine pyrite flotation product (90% of the class less than 74 microns) obtained from copper-zinc sulphide ores (Table 4).

 

Table number 4

The results of the centrifugal separation of pyrite flotation product of copper and zinc ore

Products

Output, %

Gold content, g/t

Gold extraction, %

Extraction on CK concentrator with further concentration on table SKL-2

Table concentrate SKL-2

1.1

334,6

68,1

Tailings SKL-2

8,45

2,3

1,8

TOTAL concentrate CK

9.55

71,8

69,9

Tailings CK

90,45

1,8

30,1

Input material

100

5,65

100

Extraction on Falcon SB-40 with further concentration on table SKL-2

Table concentrate SKL-2

1,1

20,12

30,6

Tailings SKL-2

14,26

1,3

25,4

TOTAL concentrate Falcon SB-40

15,36

2,68

56

Tailings Falcon SB-40

84,64

0,38

44

Input material

100

0,73

100

 

conclusion

Accomplished studies have shown that CK centrifugal concentrators provide more efficient capture of the thin native gold (particle size less than 50 microns) than the concentrator in which loosening of the bed is introduced into the bowl water channels. In the case of a type of segregation devices with high unit performance they can make a real competition to "Knelson" and "Falcon" concentrators.



PRICE USD $6,900.00  
QTY:   
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