Abstract:To solve the problem of stope segregation, dehydration difficulties in filling slurry and superfine tailings settling difficulties in sand tank of Xincheng Gold Mine, we had a laboratory experiment to select a suitableSflocculantSand its adding amount though an experimental equipment of simulating the situation of stope and fine sand deposition in sand silo. The result of the test shows that the appropriate flocculants can accelerate the sedimentation of super fine tailings in sand silo. It can also accelerate the sedimentation and dehydration of filling slurry in the stope and reduce the segregation of filling slurry. The kinds and additive amount of flocculant should be considered into its sand silo, stope, filling and each effect process.