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Organophosphorus acids thorium

Other commercial operations known to have used organophosphorus acids for the recovery of rare earths are those of Thorium Ltd. in England,39the Megon Company in Norway,73-95 and Denison Mines in Canada.96,97... [Pg.795]

Organophosphorus acid extractants have also been used commercially to recover thorium from barren solutions obtained from uranium ion-exchange plants. For instance, Rio Tinto Dow Ltd of Canada installed a plant at Elliot Lake in 1959 to extract thorium(IV) from solutions containing only 0.15 g of thorium per litre.137 The loaded organic phase is stripped with 5 M sulfuric acid, from which the product subsequently crystallizes as an acid thorium(IV) sulfate. [Pg.798]

Lin, Y. Smart, N.G. Wai, C.M. Supercritical fluid extraction of uranium and thorium from nitric acid solutions with organophosphorus reagents, Environ. Sci. Tech. 29 (1995)... [Pg.115]

Lin, Y., Smart, N. G., Wai, C. M. (1995), Supercritical Fluid Extraction of Uranium and Thorium from Nitric Acid Solutions with Organophosphorus Reagents, Environ. Sci. Technol. 29, 2706-2708. [Pg.347]

See other pages where Organophosphorus acids thorium is mentioned: [Pg.182]    [Pg.7206]    [Pg.80]   
See also in sourсe #XX -- [ Pg.798 ]

See also in sourсe #XX -- [ Pg.798 ]

See also in sourсe #XX -- [ Pg.6 , Pg.798 ]



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ORGANOPHOSPHORUS

Organophosphorus acids

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