SEPARATION OF YTTRIUM FROM RARE EARTH CONCENTRATES BY LIQUID-LIQUID EXTRACTION. Report 254. Period covered: September 26, 1958 to December 1, 1958

Technical Report · Tue Jun 23 04:00:00 EDT 1959

OSTI ID:4138077

Lincoln, P A

Rare-earth feed containing 63% yttrium oxide was processed in the 70- stage pilot mixer-settler unit in an attempt to produce a highly concentrated yttrium oxide product. The aqueous feed solution was contacted with an organic phase containing monododecylphosphoric acid and an aqueous scrub containing hydroxyethylethylenediaminetriacetic acid in a 49-stage primary extractor. The yttrium product was then stripped from the organic phase in the 21-stage acid back extractor. The first six runs made with the 63% yttrium oxide feed are covered. The best product obtained in these runs contained 98% yttrium oxide, 0.05% erbium, 0.03% dysprosium, and 0.02% gadolinium. (auth)

• Research Organization: Michigan Chemical Corp., St. Louis, Mich.
• NSA Number: NSA-15-004060
• OSTI ID: 4138077
• Report Number(s): TID-11094
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKYL RADICALS
CHEMISTRY
DYSPROSIUM
ERBIUM
EXTRACTION COLUMNS
GADOLINIUM
HEDTA
LABORATORY EQUIPMENT
MDPA
MIXER-SETTLERS
MIXING
ORGANIC COMPOUNDS
PHOSPHORIC ACID
RARE EARTHS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
STRIPPING
WATER
YTTRIUM
YTTRIUM OXIDES