Process for the purification of a solution of lithium salts cont

Details Process for the purification of a solution of lithium salts cont Process for the purification of a solution of lithium salts cont

1996-12-30

1999-07-06

Cintins, Ivars

Gas separation: processes

Solid sorption

Inorganic gas or liquid particle sorbed

210670, 210681, 210687, 502 64, 502516, B01D 5302

Patent

active

059192879

ABSTRACT:
A process for the purification of a solution of lithium salts contaminated by metallic cations, comprising (i) passing the solution to be purified through an exchange region packed with a material suitable for the exchange of Li.sup.+ cations by contaminating metallic cations, this material being initially charged more than 95% with Li.sup.+ cations and having a better affinity for the contaminating metallic cations than for Li.sup.+ cations, so as to fix all of the contaminating metallic cations on the material by replacement of Li.sup.+ cations, whereby the solution of lithium salts recovered at the outlet of the exchange zone is stripped of contaminating metallic cations; and (ii) regenerating the material by replacement of the metallic cations fixed on the material with Li.sup.+ cations.

REFERENCES:
patent: 4855059 (1989-08-01), Frianeza-Kullberg
patent: 4859343 (1989-08-01), Frianeza-Kullberg et al.
patent: 5451383 (1995-09-01), Leavitt

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