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The Utilization of Washery Rejects and Tailings

Conference Paper


Abstract


  • This paper outlines the need to take a holistic approach to considering all products from a coal preparation plant's operation. It's a matter of optimising across revenue received from coal sales and the costs of tailings disposal, or preferably, the revenue that could be received from tailings utilization. It is explained that, where possible, there may be benefits in trying to maximise coal recovery, to minimize the amount of tailings that need to be dealt with. This is outlined using Washability Curves,as a guide to good practice.An example of this is re-mining former coal tailings dumps, where it is economic to do this, so that the resulting amount of washery tailings is reduced. Examples of washery tailings utilization in Australia are outlined, including landfill and the associated need to prevent spontaneous combustion, sporting fields, foundations for housing estates, coverage of rubbish dumps, paste and fill for underground mine stabilization, dry stacking, manufactured soils, road base, railway ballast, bricks, tiles and pozzalanic cements from fly ash.

Publication Date


  • 2017

Citation


  • Tolhurst, R., Karekal, S. & Baafi, E. (2017). The Utilization of Washery Rejects and Tailings. International Seminar on Management of Mine Waste with Value Addition (pp. 1-14).

Start Page


  • 1

End Page


  • 14

Abstract


  • This paper outlines the need to take a holistic approach to considering all products from a coal preparation plant's operation. It's a matter of optimising across revenue received from coal sales and the costs of tailings disposal, or preferably, the revenue that could be received from tailings utilization. It is explained that, where possible, there may be benefits in trying to maximise coal recovery, to minimize the amount of tailings that need to be dealt with. This is outlined using Washability Curves,as a guide to good practice.An example of this is re-mining former coal tailings dumps, where it is economic to do this, so that the resulting amount of washery tailings is reduced. Examples of washery tailings utilization in Australia are outlined, including landfill and the associated need to prevent spontaneous combustion, sporting fields, foundations for housing estates, coverage of rubbish dumps, paste and fill for underground mine stabilization, dry stacking, manufactured soils, road base, railway ballast, bricks, tiles and pozzalanic cements from fly ash.

Publication Date


  • 2017

Citation


  • Tolhurst, R., Karekal, S. & Baafi, E. (2017). The Utilization of Washery Rejects and Tailings. International Seminar on Management of Mine Waste with Value Addition (pp. 1-14).

Start Page


  • 1

End Page


  • 14