Study of the Possibility of Purifying Lithium Chloride Solution to Remove Impurities by Sorption Method

Possibility of using the ion-exchange method for purification of aqueous lithium-containing solutions to remove soluble chemical impurities was studied. As sorbents served strongly acidic (Tokem-140, Tokem-308/545, KU-2-8), weakly acidic (Tokem-200), mixed phosphorus-containing (Purolite S597), and...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2019-08, Vol.92 (8), p.1113-1121
Main Authors: Volkova, T. S., Rudskikh, V. V.
Format: Article
Language:English
Subjects:
Admixtures
Aluminum
Amberlite (trademark)
Calcium
Cation exchanging
Chelates
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Chromium
Copper
Impurities
Industrial Chemistry/Chemical Engineering
Ion exchange
Ion exchangers
Iron
Lithium
Lithium chloride
Magnesium
Manganese
Mathematical analysis
Nickel
Organic chemistry
Physical properties
Sorbents
Sorption and Ion Exchange Processes
Titanium
Transition metals
Zinc
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Summary:Possibility of using the ion-exchange method for purification of aqueous lithium-containing solutions to remove soluble chemical impurities was studied. As sorbents served strongly acidic (Tokem-140, Tokem-308/545, KU-2-8), weakly acidic (Tokem-200), mixed phosphorus-containing (Purolite S597), and chelate cation exchangers (Amberlite IRC-748, Purolite S930) of imported and domestic manufacture in the H + and NH 4 + forms. The physical properties of the sorbents were examined. Values of the distribution coefficients of lithium and impurity ions and the static exchange capacity were calculated. It was shown that it is possible to perform group extraction of impurities: ions of alkaline-earth (Ca, Mg) and transition metals (Al, Fe, Cu, Ni, Zn, Ti, Cr, Mn) with a Purolite S597 cation exchanger in the H + form and Cu and Fe admixtures by chelate sorbents (Amberlite IRC-748 and Purolite S930).
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427219080093