Extracting coarse sand from bauxite tailings using a cyclone group
June.11,2025
The tailings from the washing ore can be sent to multiple groups of cyclones for cyclone separation to obtain coarse sand. The tailings from the washing ore are first separated and processed by the first cyclone group, and the recovery rate of coarse sand with a particle size of not less than 200 mesh can reach more than 90%; then the first coarse sand obtained is screened, and the first undersize and the first overflow obtained are sent to the second cyclone group for cyclone separation. In this process, coarse sand with a particle size of not less than 500 mesh can be effectively recovered (the recovery rate can reach more than 75%); the second oversize can be directly sent to the ore sand yard for storage; the fourth overflow is strictly returned to the washing process for recycling; the filter cake can be backfilled in the goaf or sent to the ore sand yard for storage. While improving the comprehensive utilization rate of tailings, the dry discharge of bauxite tailings is realized, replacing the wet storage method of tailings that is not conducive to environmental protection.
