Bernal, L, Rayo, J & Fuentes, R 2009, 'Influence of Adverse Slope on Head Loss in a Pipeline Conveying High Concentration Slurry', in R Jewell, AB Fourie, S Barrera & J Wiertz (eds), Paste 2009: Proceedings of the Twelfth International Seminar on Paste and Thickened Tailings
, Australian Centre for Geomechanics, Perth, pp. 179-184, https://doi.org/10.36487/ACG_repo/963_21
Theoretical, steady state, incompressible, one-dimensional analysis has been done for the head loss in an
inclined pipeline conveying a suspension of liquid and particles. Values of head loss for a high concentration
copper tailings slurry have been obtained from an ad hoc experimental rig (concentration up to
42%Cv (solids by volume), adverse (positive slope) of 8%). Measured data permits the calculation of the ratio
Z, defined as the head loss of mixture for a θ angle /head loss of mixture for θ = 0. This ratio yields a value
of 1.11 with a standard deviation σZ = 0.04.
Crowe, C., Sommerfeld, M. and Tsuji, Y. (1998) Multiphase flows with droplets and particles, CRC Press, Chapter 6.
Esperanza Mining Company (2008) High density slurries, personal communication report.
Gidaspow, D. (1994) Multiphase flow and fluidization, Academic Press, Chapter 2.
Graf, W.H. (1970) Hydraulics of sediment transport, McGraw-Hill, Chapter 15.
Kawashima, T. and Noda, K. (1970) Hydraulic transport of solids in an inclined pipe theoretical and experimental
studies on pressure loss, HYDROTRANSPORT 1, First International Conference on the Hydraulic Transport of
Solids in Pipes, British Hydromechanics Research Association (ed), University of Warwick, UK,
Pullum, L., Graham, L.J.W., Rudman, M., Aldham, B. and Hamilton, R. (2006) The ups and downs of paste transport,
Proceedings of the Ninth International Seminar on Paste and Thickened Tailings, R. Jewell, S. Lawson and P.
Newman (eds), Australian Centre for Geomechanics, Perth, Australia, pp. 395-402.
Worster, R.C. and Denny, D.F. (1955) Hydraulic transport of solid material in pipes, Proceedings of the Institution of
Mechanical Engineers, Volume 169, pp. 563-586.
184 Paste 2009, Viña del Mar, Chile