Liquid wastes from mining and milling of uranium ores - a laboratory study of treatment methods

Simple item page
dc.contributor.authorRyan, RKen_AU
dc.contributor.authorAlfredson, PGen_AU
dc.date.accessioned2007-11-22T04:26:13Zen_AU
dc.date.accessioned2010-04-30T04:37:23Zen_AU
dc.date.available2007-11-22T04:26:13Zen_AU
dc.date.available2010-04-30T04:37:23Zen_AU
dc.date.issued1976-10en_AU
dc.description.abstractMethods of reducing the concentration of contaminants in mine water and in the acidic raffinate from uranium milling operations have been studied. Lime, limestone, caustic soda and lime-soda ash mixtures were compared as reagents for neutralising raffinates and for removing amines and heavy metals including radium from solution. All methods of neutralisation reduced contaminant levels significantly. Two-stage neutralisation using limestone in the first stage to pH 4, followed by second stage lime treatment appears to be an economically attractive approach. This method usually gave the lowest residual radium concentration provided the solids from the first stage were not removed before adding lime. Radium can be further removed from neutralised raffinates or from mine water conditioned with sulphate by the addition of barium chloride to co-precipitate the sulphates of barium and radium. The concentration of radium was readily reduced to less than 3 pCi £-1 by adding 10 mg Ba £-1 raffinate. For mine waters conditioned to 0.01 M in sulphate, barium additions of 20 mg £-l were required to attain the same radium concentrations. Adsorption on barytes was also effective in removing radium from conditioned mine water and neutralised raffinates.en_AU
dc.identifier.citationRyan, R., & Alfredson, P.(1976). Liquid wastes from mining and milling of uranium ores : a laboratory study of treatment methods (AAEC/E394). Lucas Heights, N.S.W.: Australian Atomic Energy Commission, Research Establishment.en_AU
dc.identifier.govdoc613en_AU
dc.identifier.isbn0642997624en_AU
dc.identifier.otherAAEC-E-394en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/603en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectAminesen_AU
dc.subjectCoprecipitationen_AU
dc.subjectLiquid wastesen_AU
dc.subjectUranium oresen_AU
dc.subjectSodium hydroxidesen_AU
dc.subjectWaste processingen_AU
dc.titleLiquid wastes from mining and milling of uranium ores - a laboratory study of treatment methodsen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
AAEC-E-394.pdf
Size:
931.38 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Scientific and Technical Reports