Document Type and Number:
Japanese Patent JPH0573692
Kind Code:
B2
Abstract:
PURPOSE:To simply separate and purify rare earth elements in a short time by densely packing a column with a fibrous ion exchanger contg. iminodiacetic acid groups and having high uniformity in shape, adsorbing rare earth metals on the ion exchanger and eluting them with an aqueous soln. of an inorg. acid. CONSTITUTION:A column is packed with a fibrous ion exchanger contg. >=1.5mmol/g iminodiacetic acid groups and having <=0.2 size uniformity range index at >=0.2g/ml density. Rare earth metals are adsorbed on the ion exchanger and eluted with an aqueous soln. of hydrochloric acid or sulfuric acid to separate and purify rare earth elements. By this method, the rare earth elements can be separated by such simple operation in a short time without using a complex forming agent.
Inventors:
MYAMATSU NORIHISA
SAGESAKA MICHIAKI
SAGESAKA MICHIAKI
Application Number:
JP2584786A
Publication Date:
October 14, 1993
Filing Date:
February 10, 1986
Export Citation:
Assignee:
NICHIBI KK
International Classes:
C01F17/00; B01D15/04; B01J45/00; C22B59/00; (IPC1-7): C01F17/00; B01J45/00; C22B59/00
Next Patent: JPS573693