Abstract:According to the structural parameters of the laboratory MODEL FX250/200 two-stage three-product hydrocyclone, a two-stage jointed three-product hydrocyclone for industrial use was enlarged and fabricated. By optimizing the diameter of the first overflow pipe, the second overflow pipe, the opening of the first bottom flow cone, the diameter of the second sedimentation port and the water supply of the second sedimentation, the ideal coarse sand for dam construction with the content of -200 mesh 13.85%, the content of -200 mesh 87.21% and the yield of sediment 35.72% were obtained in the industrial test. At the same time, the middle line damming process is optimized to reduce the investment and production cost.