Garrido, PA & Diaz, RA 2009, 'Analysis of the Methodologies Used for Quantifying or Setting the Yield Stress of Copper Tailings', 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. 21-30, https://doi.org/10.36487/ACG_repo/963_3
Nowadays the aim of obtaining tailings in the form of consistent slurries is becoming increasingly
widespread. Due to this, it is now a must to specify the rheological features of all pulp suspensions with a
high solid content. This is particularly relevant when aiming at a process design and optimisation for both
the thickening and final disposal of such tailings alike. The specific objective of this paper is the comparison
of measurements undertaken with the use of a rotary rheometer and other techniques which are both low
cost and easy to implement. The methodologies considered range from rheometry (CR mode), slump tests,
Marsh cone and flume. The results obtained indicate that it is feasible to find a relationship between the flow
strain readings obtained with the rotary rheometer and the parameters derived from each of the alternative
methods considered; as well as the final height of the cone and cylinder in the case of the slump tests, the
flow time in the Marsh cone and the standstill angle in the flume tests.
Alderman, N., Meeten, G. and Sherwood, J. (1991) Vane rheometry of bentonite gels, J. Non-Newton, Fluid Mech. 39,
Barnes, H. and Nguyen, Q. (2001) Rotating vane rheometry-a review, J. Non-Newtonian Fluid Mech. 98, pp. 1–14.
Clayton, S., Grice, T. and Boger, D. (2003) Analysis of the slump test for on-site yield stress measurement of mineral
suspensions, Int. J. Miner. Process, 70, pp. 3–21.
Kwak, M., James, D. and Klein K. (2005) Flow behavior of tailing paste for surface disposal, Int. J. Miner. Process, 77,
Le Roy, R. and Roussel, N. (2005) The Marsh cone as a viscometer: theorical analysis and practical limits, Material and
Structures 38, pp. 25–30.
Murata, J. (1984) Flow and deformation of fresh concrete, Mater. Constr. 17(98), pp. 117–129.
Nguyen, Q. and Boger, D. (1983) Yield stress measurement for concentrated suspensions, J. Rheol. 27, pp. 321–349.
Nguyen, Q. and Boger, D. (1985) Direct yield stress measurement with the vane method, J. Rheol. 29, pp. 335–347.
Nguyen, Q. and Boger, D. (1998) Application of rheology to solving tailing disposal problems, Int. J. Miner. Process.
54, pp. 217–233.
Nguyen, V., Rémond, S., Gallias, J., Bigas, J. and Muller, P. (2006) Flow of Herschel-Bulkley fluids through the Marsh
cone, J. Non – Newtonian Fluid Mech. 139, pp. 128–134.
Pashias, N., Boger, D., Summers, J. and Glenister, D. (1996) A fifty cent rheometer for yield stress measurement,
J. Rheol. 40(6), pp. 1176–1189.
Paste 2009, Viña del Mar, Chile 29
Analysis of the Methodologies Used for Quantifying or Setting the Yield Stress of Copper Tailings P.A. Garrido and R.A. Diaz
Roussel, N. and Roy, L. (2005) The Marsh cone: a test or a rheological apparatus? Cement and Concrete Research 35,
Roussel, N., Stefani, C. and Roy, L.R. (2005) From mini – cone test to Abrams cone test: measurement of cement-based
materials yield stress using slump test, Cement and Concrete Research 35, pp. 817–822.
Saak, A. and Jennings, H. (2004) A generalized approach for the determination of yield stress by slump and slump flow,
Cement and Concrete Research 34, pp. 363–371.
Sofra, F. and Boger, D. (2001) Environmental rheology for waste minimisation in the minerals industry, Chemical
Engineering Journal 86, pp. 319–330.
Thermo Fisher Scientific Inc. HAAKE RheoStress 1 Rotational Rheometer, viewed 25 September 2008,
Wallevik, J. (2006) Relationship between the Bingham parameters and slump, Cement and Concrete Research, 36,
30 Paste 2009, Viña del Mar, Chile