Gold Concentrator

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  • The purpuse and function of Gold Concentrator

    Basically, gold concentration technique is classified  into chemical method and physical method. The former that is  further divided  into amalgamation, floatation and cyanidation was developed based on the  property of gold by which the gold can combines with other  substances. Chemical  process shows certain advantages while resulting in rather serious environment  pollution. With respect to physical process, the Law of  Gravity is adopted to separate  gold grains from other lighter substances. This technique is used for gold  concentration with jigging machine, table  concentrator, glide chute and conical  concentrator. Vibrating centrifugal concentrator is a new type of machine using  the Law of Gravity, a globally  advanced concentration technique introduced from  Russia.

    During the concentration of gold, the  concentration bin rotates at a high speed. As a result, when the pulp gets into  the bin, the particles  therein will be under the effect of radial outward  centrifugal force due to the rotation and the effect of radial inward vibration  from time to time. The  particles with different specific gravities are  separated under the joint action of the two forces. As a result, gold grains  will concentrate in gold bin,  and the particles with smaller specific gravity  will be entrained in water and thus be discharged from the gold bin.

    The new type of pollution-free and high-efficiency vibrating centrifugal gold concentrator is applicable for selection  of monomer gold and the gold in large particles with relatively high specific   gravity, presenting a recovery rate of fine monomer gold with a particle size ≥15um from refractory gold ore at least 10% higher than  other imported  equipment. Since most gold ore contains monomer gold, the new  type of pollution-free high efficiency vibrating centrifugal concentrator  applies to the gold  concentration from most rock and sand gold mines,  particularly from refractory gold ore. This machine also presents extremely  high economic value for  tailings recovery after floatation and cyanidation.

    In order to improve the recovery rate, four  or five  centrifugal concentrators are used in concentration process to establish  a production line with a capacity of 25 tons/day. In large-scale production,   several production lines can be designed and installed to meet the requirements  of gold concentration capacity of 50, 100 and 200 tons.

     

     

    Operations of Gold Concentrator

    1. Check if the  connecting pieces of the whole machine are tightly  fastened. The rotation shaft shall rotate counterclockwise (correct) when the machine  is switched on. In  case it is found the shaft rotates clockwise (error), please  turn off the power supply and exchange the two 380V live wires and then connect  the power  supply so as to ensure the counterclockwise rotation (correct) of  rotation shaft.

    2. Mount the gold concentration  bin after the shutdown.

    3. Close the feed support cover and align the pulp inlet pipe.

    4. Connect the power  supply and start the machine. And then, the thoroughly  mixed pulp will flow into pulp incoming chute in succession. In case of gold  concentration by  several centrifugal concentrators in succession, the pulp  outlet of one concentrator shall align to the pulp inlet chute of the next  one.

    5. The gold  concentration bin shall be taken out on a regular basis (for example, once  every 8  hours) according to the gold content in ore material.

    6. Before removing the bin, be  sure to stop the pulp feeding and to turn  off the power and stop the machine after all pulp inside the bin has been  completely discharged.

    7. Do not make the gold material spilt over when removing the bin. Sweep away the pulp (if any) on external surface of bin.

    8. Mount another gold concentration bin immediately after the bin is removed. 

    9.  Again, close the feeding support cover and align the inlet pipe. And then start the machine. 

     

     

    Points for attention of Gold Concentrator

    1. Check if electrical leakage occurs after the power is turned on. In case  the motor does not work, please disconnect the power supply and check the   circuit. 

     2. In case of serious noise, please stop the machine and check if the  connecting parts and vibration parts are loose.

    3. When  taking out the concentration bin from the machine, the pulp shall  be prevented from flowing to other parts of the machine.

    4.  The wearing parts of  this machine include connection hose, spindle and splines  that shall be replaced on a regular basis. 

     


    Technical Features of Gold Concentrator

    1. The use of four centrifugal concentrators in succession can realize a recovery  rate of up to 96% for gold grains with a particle size 50um. 

    2. The fine gold grains with a size of 15um can even be treated, presenting  a concentration parameter at least 10% higher than imported  gold concentrator,  showing a recovery rate of 80%-96%.

    3. No medicals are  used in gold concentration process so as to protect the environment  against  pollution.

    4. The  concentration ratio reaches 10000:1.

    5. The machine features  convenient and simple operation and the lower costs  of production and maintenance.


  • Gold Concentrator Technical Specifications

    Model

    STLB20

    STLB30

    STLB60

    STLB80

    STLB100

    Feeding Capacity(t/h)

    0-0.6

    2-3

    8-12

    35-45(solids)

    70-80

    Fluidization water Required(m3/h)

    2-3

    3-5

    7-10

    30-36

     55-80

    Slurry Water Required(m3/h)

    1.5-4

    5-7

    8-12

     35-50

     70-120

    Feeding Density(%)

    0-50

    0-50

    0-50

    0-50

    0-50

    Feeding size(mm)

    0-3

    0-3

    0-5

    0-5

     0-5

    Concentration Cleaning Up Cycle

    Vein gold 1-3 Hours Placer gold “2-6 Hours

    Concentrate weight(kg)

    2

    10-20

    30-40

    60-70

    80-90 

    Power Requirements(Kw)

    0.75

    1.5

    4

    11

    22 

    Approximate shipping weight(Kg)

    145

    400

    1000

    1500

    2000

    Approximate created shipping Dimensions (mm)

    790*785*790

    1180*1140*1250

    1970*1670*1750

    2300*1800*2200

    2400*2000*2300

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