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U.S. Department of Energy
Office of Scientific and Technical Information

PRODUCTION OF PURE LITHIUM SALTS FROM AQUEOUS SOLUTIONS CONTAMINATED WITH OTHER SOLUBLE SALTS

Patent ·
OSTI ID:4080378
Lithium is precipitated as insoluble fluoride, phosphate, borate, oxalate, or preferably carbonate in the presence of a 50 to 100% excess of the sodium or potassium salt of an organic acid, prefersbly EDTA (ethylenediaminetetraacetic acid) or NTA (ritrilo-triacetic acid). The pH of the reactive components is kept between 7 and 12. The acid forms soluble complexes with most of the cations which are present as impurities; Mn, Mg, Al, Fe, Ca, Ba, Sr, etc. The organic acid is periodically regenerated from the residual solution, and recycled as sodium or potassium salts. (EURATOM)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-15-021092
OSTI ID:
4080378
Report Number(s):
DE 1044787
Country of Publication:
Germany
Language:
English