DE2708687

DE2708687

Yttrium recovery from aq. rare-earth metal (REM) chlorides soln. comprises mixing the soln. with (A) a neutral organic extn. agent and (B) a salting out agent (I) or thiocyanate (II) ions to form a raffinate contg. Y and as extract contg. the lanthanides. The raffinate contains 0.7-2.2 mole/l REM an...

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Bibliographische Detailangaben
Hauptverfasser: ABRAMOV, LEONID A., SWERDLOWSK, DRYGIN, ANATOLIJ I., SVERDLOVSKAJA OBLAST, MICHAILITSCHENKO, ANATOLIJ I., MOSKAU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
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Beschreibung
Zusammenfassung:Yttrium recovery from aq. rare-earth metal (REM) chlorides soln. comprises mixing the soln. with (A) a neutral organic extn. agent and (B) a salting out agent (I) or thiocyanate (II) ions to form a raffinate contg. Y and as extract contg. the lanthanides. The raffinate contains 0.7-2.2 mole/l REM and 1.1-6 mole/l (I) or has a molar ratio of REM to (II) of 3.5:1-230:1. The extn. agent (A) is pref. a sulphoxide of m.wt. 129-244 in a non polar diluent pref. kerosene, a xylene or polyalkylbenzene. The salting out agent is pref. a chloride of Li, Mg, Ca or Al. The extn. is used in processing ores e.g. xenotime, parasite, and tailings from processing uranium raw materials.