Laterite Leach Tests

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ANSTO Minerals Report C1206 to Lagoon Creek Resources – Westmoreland Deposits viii Solvent Extraction • Uranium loading of up to 4.7 g/L were achieved using a mixture of 5 vol.% Alamine 336, 2 vol.% Isodecanol in Shellsol 2046. • The impurity load on the solvent was low and stripping with ammonia/ammonium sulphate worked well. • ADU precipitation yielded a product meeting most of the strict Converdyn specifications. Recommendations • Conduct leach tests using solution either from site or a synthetic solution to simulate expected leach make-up solution; • Conduct optimisation tests on the expected composite feed; • Conduct downstream neutralisation testwork, on liquors generated from Redtree ore and a composite of all three ores, to ensure that the arsenic can be effectively immobilised into an iron precipitate; • Conduct a continuous pilot operation on the expected feed composite to confirm data generated in batch tests, and to generate slurry/solution for continuous downstream piloting; • Conduct filtration, settling and rheology test work on the product slurry from the continuous test work; • Conduct downstream continuous test work, i.e. ion-exchange and/or solvent extraction; • Consider tailings neutralisation treatment and recycle of liquor.
ANSTO Minerals Report C1206 to Lagoon Creek Resources – Westmoreland Deposits ix DISTRIBUTION LIST Person/Organisation N o. of Copies Copy N o. Lagoon Creek Resources 4 1 - 4 R. J. Ring 2 5 - 6 P. C. Freeman 1 7 R. Secomb 1 8 D. Wilkins 1 9 ANSTO Library 2 10 - 11 ANSTO Minerals Records 2 12 - 13
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Thickening and Vacuum Filtration Ev
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Thickener Test Summary for Laramide
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Laterite Leach Tests

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