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Journal of the Southern African Institute of Mining and Metallurgy

versión On-line ISSN 2411-9717
versión impresa ISSN 0038-223X


BOSMAN, J. The art and science of dense medium selection. J. S. Afr. Inst. Min. Metall. [online]. 2014, vol.114, n.7, pp.529-536. ISSN 2411-9717.

Medium suspensions play an integral part in the successful application of dense medium separation for both static and dynamic separators. Although models exist to predict particle movement as a function of medium density and viscosity, these models have been derived on the assumption of Newtonian rheology. Viscosity measurements of medium suspensions have shown that they are non-Newtonian, with a yield stress, and as such cannot be used in the existing models. As a result, medium selection remains an art based upon practical experience and indirect measurements of viscosity such as stability and cyclone differentials.

Palabras clave : DMS medium; rheology; dense medium drum; dense medium cyclone.

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