Modern Mining ›› 2024, Vol. 40 ›› Issue (06): 173-.
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In order to improve the overflow water quality of tailings thickening well in the concentrator
of Yanshan Iron Mine，aiming at the problems of turbidity of overflow water and short dredging cycle of cir⁃
culating pump pool caused by large amount of ore feeding in tailings thickening well，the experimental study
on flocculation and sedimentation of tailings in Yanshan Iron Mine was carried out. The test results show that
under the same dosage of flocculant，with the increase of slurry concentration，the settling velocity of solid
particles in slurry becomes slower，and the clarifying liquid becomes turbid. Combined with the actual pro⁃
duction situation，the feeding concentration of concentrated large well is determined to be 8%. Under the
condition of slurry feeding concentration of 8%，when the dosage of flocculant is 8～10 g/t，the flocculation
and sedimentation effect of tailings is better. At the same time，the clarification solution is clarified，and the
dosage of flocculant is 50% lower than that of the original. The dredging cycle of the water pump pool is pro⁃
longed，and the surrounding environmental sanitation is effectively improved. At the same time，the man⁃
power and material resources are greatly reduced，and the annual economic benefits can be created by about
9 million yuan.
