Process of obtaining uranium and uranium compounds from phosphoric acid

US4385036A · kind A · utility

Assignee

• Chemische Fabrik Budenheim KG · DE

Inventors

• Klaus Beltz · Eltville am Rhein, DE
• Klaus Frankenfeld
• Rainer Lehmann · Limeshain, DE
• Inge Zintl · Ingelheim am Rhein, DE

Key dates

• Filing date: Dec 19, 1980
• Grant date: May 24, 1983
• Expiry date: Dec 19, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention concerns a method for the liquid/liquid extraction of uranium from phosphoric acid with the aid of alkylamine polyphosphate and/or alkylamine metaphosphate compounds, dissolved in organic solvents insoluble in water. The uraniferous phosphoric acid is brought into contact with an organic phase compound of a long-chain alkylamine polyphosphate and/or alkylamine metaphosphate compound and an organic solvent, the alkylamine in the alkyl residue containing 8 to 30, preferably 8 to 18 C-atoms corresponding to the formula ##STR1## wherein R.sub.1 and R.sub.2 denote hydrogen or alkyl radicals and R.sub.3 denotes an alkyl radical, the polyphosphate and/or metaphosphate residue having 2 to 10,000 P-atoms per molecule and being of the straight-chain and/or linked-chain or cyclic chain type. The uranium is transferred from the aqueous into the organic phase from which the uranium is re-extracted in the known way.