Dewatering to higher densities - an industry review

Authors: Schoenbrunn, F Download Paper

DOI https://doi.org/10.36487/ACG_rep/1104_02_Schoenbrunn

Cite As:
Schoenbrunn, F 2011, 'Dewatering to higher densities - an industry review', in R Jewell & AB Fourie (eds), Paste 2011: Proceedings of the 14th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 19-23, https://doi.org/10.36487/ACG_rep/1104_02_Schoenbrunn



Abstract:
The development of high density and paste thickening technologies has changed the economics used in evaluating the benefits of increased thickener underflow density. This comes at a time of increasing competition for scarce water resources and a tightening regulatory framework in both water use and impoundment. These and other factors have led to more and more plants using high density and paste thickening technologies together with optimised tailings disposal schemes to recover water, minimise tailings impoundment areas and comply with regulations. High density and paste thickening have allowed these plants to take advantage of the tailings disposal options that weren’t previously possible. This paper will give an overview of technology including the differences between high rate, high density and deep cone paste thickeners. It will also review a number of recent projects including the decision process and resulting technology selection. Results from recent installations will also be discussed.

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