前言我矿硫化矿采空区原设计采用+37微米尾砂进行充填,并用φ300毫米水力旋流器作分级设备。但是,由于尾矿+37微米粒级少,加之分级设备效率低,若用全尾矿充填,细粒级多,脱水困难。为此,从新采用+19微米尾矿进行采空区充填,将φ125毫米水力旋流器用于分级脱泥。分级效率以-19微米为分离粒度计,经过几个月的生产实践,原设计浓度,压 Preface My mine sulfide ore gob area originally designed +37 micron tailings for filling, and φ300 mm hydrocyclone for grading equipment. However, due to the tailings +37 micron particle size less, combined with low grade equipment efficiency, if the full tailings filling, fine grade, dehydration difficult. To this end, a new +19 micron tailings was used for gob filling and a φ125 mm hydrocyclone was used for fractional desliming. Grading efficiency to -19 micron separation particle size meter, after several months of production practice, the original design concentration, pressure