Liu, X, Zhao, Z, Wang, G & Huang, M 2017, 'Friction losses of classified tailings slurry based on loop pipe testing', in A Wu & R Jewell (eds), Proceedings of the 20th International Seminar on Paste and Thickened Tailings
, University of Science and Technology Beijing, Beijing, pp. 134-139, https://doi.org/10.36487/ACG_rep/1752_15_Liu
In this paper, a full-scale pipe loop test for the backfill mixes of classified tailings collected from a copper mine was conducted in JCHX Paste Backfilling Lab. The process flow, main equipment and measuring instruments were introduced. Based on the data analysis, the transport characteristics and pipe friction losses under different work conditions were determined. The research results indicated that: the more suitable transporting concentration of the non-cemented slurry is 66 to 68wt%, and the corresponding friction losses is 3 to 3.5 MPa/km (pipe diameter: 100 mm, flow velocity: 1 m/s). As to the cemented tailings slurry, the optimal transporting concentration is within the range of 72 to 74wt%, and the friction losses is 2.2 to 2.4 MPa/km. The friction losses in R600 elbow was 1.3 times as much as that in R1500 elbow, and was approximately 7 times as much as that in the horizontal pipe.
Belem, T. and Benzaazoua, M. 2008, ‘Design and application of underground mine paste backfill technology’, Geotechnical and Geological Engineering, vol. 26, no.2, pp.147-171.
Hallbom, D. J. 2008. ‘Pipe flow of homogeneous slurry’, Doctoral dissertation, the University of British Columbia.
Han, F. Z. 1985, ‘Jinchuan formula for the calculation of hydraulic gradient of flow with solid-liquid suspension’, International Workshop on Flow at Hypeconcentrations of Sediment, Beijing, pp.10-14.
Pullum, L. 2007, ‘Pipelining tailings, pastes and backfill’, in AB Fourie & RJ Jewell (eds), Proceedings of the Tenth International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 113–127.
Wu, A.X. and Liu, X.H. 2014, ‘Resistance characteristics of structure fluid backfilling slurry in pipeline transport’, Zhongnan Daxue Xuebao(Ziran Kexue Ban), vol. 45, no.12, pp.4325-4330.