How does the centrifugal concentrator work？

The drum of the centrifugal concentrator rotates at a high speed at a certain number of revolutions, and the ore pulp is sent to the inner wall of the drum by the ore feeder through the feed nozzle in two places. The pulp rotates with the drum at high speed. Under the action of centrifugal force, the heavy minerals are deposited on the inner wall of the drum and rotate together with the drum. The light ore particles in the pulp rotate with the drum at a certain differential speed. The helix angle flows from the ore feeding end to the ore discharge end along the slope direction of the drum, and is discharged through the ore discharge and separator at the end, which is the tailings. After 3 minutes of sorting, the ore-distributing device automatically turns to the position of discharging the concentrate, and stops feeding the ore into the drum. After the tailings are discharged, the ore-distributing device automatically turns away from the original normal position to prepare to intercept the concentrate , and then the high-pressure flushing water valve is automatically opened, and the high-pressure flushing water will wash down the concentrate deposited on the inner wall of the drum. After the concentrate is flushed, the high-pressure water valve is automatically closed. The ore separator automatically resets to start the next sorting cycle.

The centrifugal concentrator can run continuously for a long time, easy to maintain, and has a wide range of applications. It can be used for solid dehydration, liquid clarification, solid particle classification according to particle size, and liquid-liquid-solid separation. It has good adaptability to materials and can separate solids. The particle size range is 0.005mm-2mm, and the volume concentration range of the suspension is 2%-40%. Concentration fluctuations have little effect on the separation effect, compact structure, easy to realize structural sealing, closed machine can operate under a certain positive pressure, single machine production capacity is large, operating cost is low, and the floor area is small. There is no need to use the filter cloth screw to unload and settle. The main advantage of centrifugal concentrator: automatic continuous operation. Heavy liquids and heavy suspensions. The method of separation with air as the medium is called wind separation, and the separation with heavy liquid and heavy suspension as the medium is called dense medium separation. In most cases, beneficiation is carried out with water as the medium. in the selection process. The air gravity beneficiation process is carried out in a certain medium. As a medium, the dynamic action of the aqueous medium is of great significance.

The feeding of the centrifuge has the following requirements:

1. The cleaner the pulp water, the better.

2. The pulp water concentration is about 30%

3. The ore particle size is ≤6mm

4. The recoil water pressure is 0.1~0.3MPa

5. The backwash water must be clean water.

6. The feed must be uniform.

After the above conditions are met, the gold recovery rate of the centrifuge is as high as 90%.