Characterisation of Ranger Mine water treatment sludge

Pleysier, R., Douglas, G., Trefry, M. G., Wendling, L., Benn, F., Grabsch, A. and Klauber, C. (2010). Characterisation of Ranger Mine water treatment sludge. In: International Mine Water Conference 2009. International Mine Water Conference 2009, Pretoria, South Africa, (619-626). 19-23 October 2009.

Author Pleysier, R.
Douglas, G.
Trefry, M. G.
Wendling, L.
Benn, F.
Grabsch, A.
Klauber, C.
Title of paper Characterisation of Ranger Mine water treatment sludge
Conference name International Mine Water Conference 2009
Conference location Pretoria, South Africa
Conference dates 19-23 October 2009
Proceedings title International Mine Water Conference 2009
Place of Publication Red Hook, NY
Publisher Curran Associates, Inc.
Publication Year 2010
Year available 2010
Sub-type Fully published paper
Open Access Status
ISBN 9781617386626
Start page 619
End page 626
Total pages 8
Collection year 2011
Language eng
Formatted Abstract/Summary
Process water from ERA’s Ranger Uranium Mine (Northern Territory, Australia) requires treatment to meet stringent
environmental water quality criteria prior to discharge into the environment. Prior to treatment, the process water is
acidic and contains high concentrations of sulfates, aluminium, magnesium and manganese in addition to residual
uranium. One concept that has been considered for a process water treatment plant would use milk of lime and reverse
osmosis to treat 1.5GL per annum to discharge 1GL of high purity water, with a brine balance and 85 000 tonnes of
sludge by-product, the latter requiring stable long-term storage. The low pH of the process water currently stored in a
tailings dam precludes this as a storage option unless re-leaching can be prevented.

The water treatment sludge obtained during trials was characterized via XRD, XRF, TGA and laser sizing to identify
both the mineralogy and morphology of the material with the aim of understanding its properties and possible
interactions with tailings and hence possible options for its secure disposal.

Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Agriculture and Food Sciences
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Created: Tue, 04 Feb 2014, 14:49:32 EST by Laura Wendling on behalf of School of Agriculture and Food Sciences