Method for separating rare earth metals

Rare earth metals are adsorbed on an ion exchange fiber comprising an ion exchanger having a strong cation exchange group and a weak cation exchange group, and the adsorbed metals are fractionally eluted with an aqueous solution of a chelating agent, whereby the respective rare earth metals can be s...

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Main Authors ICHIJO; HISAO, OGAWA; SHIGEO, SUEHIRO; TETSURO, ASAMI; TADAO, YAMAUCHI; AIZO, UZUMAKI; MITSUTAKA, SUZUKI; MITSUO
Format Patent
LanguageEnglish
Published 30.04.1985
Edition3
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
THEIR RELEVANT APPARATUS
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:Rare earth metals are adsorbed on an ion exchange fiber comprising an ion exchanger having a strong cation exchange group and a weak cation exchange group, and the adsorbed metals are fractionally eluted with an aqueous solution of a chelating agent, whereby the respective rare earth metals can be separated at high efficiency in a short time. According to this method, elution can be accomplished at an elution rate of 5.0 or above in terms of space velocity.
Bibliography:Application Number: US19830497871