11kw Centrifugal Concentrator Gold Recovery STL80

Centrifugal concentrator has been used for decades in China, not only for separating tin and tungsten ore slime, but also for treating lean iron ore. The specifications of the centrifuge were changed from the original φ 800 mm × 600 mm to 600 mm φ 1600 mm × 900 mm, and is designing and manufacturing larger and continuous discharge centrifuges.
Centrifugal concentrator is also called centrifugal chute. There are many kinds of centrifuges, but their structures are basically the same. When the centrifuge rotates at high speed, it produces great centrifugal force to strengthen the gravity separation process, so that the fine ore particles can be recovered more effectively. Its emergence successfully solves the full recovery of fine particles. Therefore, it is widely used to recover slimes such as tungsten, tin and iron.
The main advantages of centrifugal concentrator are large processing capacity, low lower limit of recovery particle size, stable operation and easy operation; But its enrichment ratio is not high.

The drum of the centrifugal concentrator rotates at a high speed with a certain number of revolutions, and the ore slurry is sent to the inner wall of the drum through the ore feeding nozzle in two places. The slurry rotates with the drum at a high speed. Under the action of centrifugal force, heavy minerals are deposited on the inner wall of the drum and rotate with the drum. The light mineral particles in the slurry rotate with the drum at a certain differential speed. In the process of rotation, they rotate and flow from the ore feeding end to the ore discharge end along the slope direction of the drum at a certain spiral angle, and are discharged through the ore discharge separator at the end, which is tailings. After 3min separation, the ore feeding separator will automatically turn to the concentrate discharge position and stop feeding into the drum. After the tailings are discharged, the ore discharging separator will automatically turn away from the original normal position to intercept the concentrate, and then the high-pressure flushing water valve will automatically open. The high-pressure flushing water will flush the concentrate deposited on the inner wall of the drum. After the concentrate is flushed, the high-pressure water valve will automatically close. After the concentrate is discharged, The ore discharge separator and ore feeding separator are reset automatically to start the next separation cycle.

The structural factors of centrifugal concentrator mainly include the diameter, length and half cone angle of the drum. Increasing the diameter of the drum can increase the production capacity of the equipment in direct proportion; Increasing the length of the drum can greatly improve the production capacity of the equipment, but unfortunately, the lower limit of the recycled particle size will also rise. Increasing the half cone angle of the drum can improve the quality of high-density products, but the recovery will be reduced accordingly. In order to solve this contradiction, centrifugal concentrators with double taper, three taper and even four taper have been developed successively.
The operation factors of centrifugal concentrator mainly include feed concentration, feed volume, drum speed, feed time and separation cycle. When the same material is processed by centrifugal concentrators of different specifications, the feed volume per unit drum wall area should be approximately equal, and the feed concentration should increase with the increase of drum length; When the same equipment is used to treat different materials, the influence of feed concentration and volume is the same as other chute equipment. The rotational speed of the drum is approximately inversely proportional to the square root of the product of the drum diameter and length. Increasing the rotating speed in a certain range can improve the recovery, but the quality of high-density products is reduced due to the poor stratification effect.

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Centrifugal concentrator centrifugal separator