Separation of rare earth values by liquid/liquid extraction

Details Separation of rare earth values by liquid/liquid extraction Separation of rare earth values by liquid/liquid extraction

1991-02-21

1993-02-23

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

423265, B01D 1104

Patent

active

051887355

ABSTRACT:
The rare earth values contained in an aqueous solution of the nitrates of at least two rare earth elements are conveniently separated by first liquid/liquid extracting such aqueous nitrate solution with a liquid organic phase containing a P(O)R.sub.1 R.sub.2 R.sub.3 organophosphorus extractant.

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patent: 4617125 (1986-10-01), Danesi
patent: 4647438 (1987-03-01), Sabot et al.
Chemical Abstracts, vol. 71, 1969, p. 323, resume No. 85123f.
Chemical Abstracts, vol. 79, 1973, p. 220, resume No. 129741c.
Chemical Abstracts, vol. 83, 1975, p. 505, resume No. 66203p.
Chemical Abstracts, vol. 92, 1980, p. 457, resume No. 153791h.
Chemical Abstracts, vol. 101, 1984, p. 250, resume No. 95135p.

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