Abstract: Based on the low-concentration fine tailings obtained from the classification of certain gold ores in Shandong Province,the effective thickening of the tailings was carried out by flocculation and sedimentation process.The effect of flocculant dosage on the sedimentation characteristics of the fine tailings was investigated.At the same time,the pipeline transportation properties of cemented slurry of fine tailings with different concentrations were studied with the help of the Buckingham equation.Test results showed that the addition of flocculant significantly promoted the sedimentation of fine tailings.When the dosage of the flocculant was 60 g/t,the sedimentation rate of fine tailings reached 8.80 cm/min.The measurement of rheological parameters of cemented slurry and the calculation of pipeline transportation resistance provided an important basis for the concentration control of cemented slurry and its smooth transportation in the filling pipeline.