gold centrifugal concentrator new type for  fine gold recovery

Gold centrifugal concentrator  is a fairly new kind of gravity concentration apparatus. It is a machine that uses the principles of a centrifuge to boost the gravitational force which is experienced by feed particles so as to enable separation on the basis of particle density. A concentrate bowl that has a cone shape, which rotates at a high speed and powered by an electric motor with a pressurized jacket that encompasses the bowl are the key components of this unit. Near the centre of the bowl from above, feed material that comes from the cyclone underflow or the ball mill discharge is fed as slurry towards it. The slurry that is fed contacts the vessel’s base plate and as a result of the rotation, it is thrust outward. The concentrate bowl has some outer extremities which houses a series of ribs which has a groove between each pair of the ribs. The lighter material rises upwards over the grooves during operation and the heavy mineral particle (that usually has economic value) is trapped in them. Along the perimeter of each groove, pressurized water is injected through a series of tangential water inlets so as to maintain a fluidized bed of particles to allow heavy mineral particles to be efficiently concentrated in it.

Gold centrifugal concentrator is a machine that was patented in China. It is an efficient machine that is useful in the recovery of free gold in all ranges of particle size. It is most especially useful for recovering fine gold which gets lost during the operation of gravitational concentrators. It is not only used for placer gold mining, but it can also be used for the recovery of natural gold from rocks that are hard, for replacing amalgamation and recovering of gold from the tailings.

Application has shown that the recovery of gold can be very high, as much as 99% and the concentration ratio is up to 1,000 times. In the recovery of natural gold in lode ore that has a particle size of -0.074mm, the gold recovered is about 98%, for recovery of gold in a particle size of 0.004mm, it is up to 97%.

Model Power (kW) Capacity (t/hr) Slurry Water (L/min) Jet Water (L/min) Concentrate (ton/hour)
STL20 0.75 0.5-1.0 16 30 1-2
STL30 2.2 2-3 120 80 8-15
STL60 4.0 10-12 400 250 20-30
  1. Automatic operation and discharging
  2. High recovery and high concentrating ratio
  3. Recovery performance is steady
  4. Has a centre discharge design that enables fast and secure concentrate removal
  5. Eco friendly ( needs no reagents or chemical additives)
  6. Low electricity and low water requirements
  7. Low cost of production, low maintenance requirements with durable wear parts
  8. Has a compact design needing less space and can be easily merged into an existing mining processing
  9. Fast returns on investment, usually less than 6 months.

About new type gold centrifugal concentrator

Our aim is to solve discontinuous work and stop complicated washing operations and wasting of manpower. These are the shortcomings of older model products; our company has therefore developed an automatic discharging system to solve this problem. Our new gold centrifugal concentrator can be fully automated. You no longer need to wash concentrates by manpower, all you need to do is to press the start and stop button on the automatic control system to complete all your work. The whole process is a closed operation; therefore man-made concentrate loss can be avoided. Asides from this, our concentrator adopt soft materials at shock-absorbing places, it can therefore effectually decrease negative effects issued from the vibration, and increase the service life of the machine.

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