SEPARATION AND DETERMINATION OF RARE EARTH METALS IN ZIRCONIUM-RARE EARTH METALS IN ZIRCOMIUM-RARE EARTH ALLOYS

Technical Report · Wed Jan 01 04:00:00 EST 1964

OSTI ID:4015900

Cogan, E

Equilibrium phase diagram studies of zirconium-rare earth metal alloys prompted the development of a rapid gravimetric method for determining rare earths in zirconium in which the rare earths are absorbed from sulfuric acid solution of the alloy on a cation exchange resin. The sample in 10 percent H/sub 2/SO/sub 4/ is introduced into the column, the zirconium is eluted with 10 percent H/sub 2/SO/sub 4/, and the rare earths are eluted with (NH/sub 4/)/sub 2/ SO/sub 4/ solution and precipitated with NH/sub 4/OH. A tracer technique was employed to determine the efficiency of the procedure. Y/sub 2/O/sub 3/ and europium-154 and -152 (Oak Ridge) were added to 10 g of zirconium and taken through the entire procedure. Recovery averaged 97.6 percent on 0.002 mu g europium in the rare earth fraction. Rare earths were determined in the range 0.10 to 90 percent. (auth)

• Research Organization: Bureau of Mines, Washington, D.C.
• NSA Number: NSA-18-019839
• OSTI ID: 4015900
• Report Number(s): BM-RI-6430
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ADSORPTION
ALLOYS
AMMONIUM COMPOUNDS
CHEMISTRY
EFFICIENCY
EUROPIUM 152
EUROPIUM 154
EXTRACTION COLUMNS
HYDROXIDES
ION EXCHANGE MATERIALS
LEACHING
PRECIPITATION
QUANTITATIVE ANALYSIS
RARE EARTHS
SEPARATION PROCESSES
SOLUTIONS
SULFATES
SULFURIC ACID
TRACER TECHNIQUES
YTTRIUM OXIDES
ZIRCONIUM ALLOYS