METHOD OF LITHIUM CHLORIDE PURIFICATION

METHOD OF LITHIUM CHLORIDE PURIFICATION

FIELD: chemistry. ^ SUBSTANCE: method of lithium chloride purification from admixtures involves obtaining processing medium of lithium chloride with lithium oxychloride residues by dissolution of processing lithium hydroxide in water or by preparation of processing lithium carbonate slurry, followed...

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Hauptverfasser: SHEMJAKINA IRINA VLADIMIROVNA, MURATOV EVGENIJ PAVLOVICH, SHEMJAKIN SERGEJ VLADIMIROVICH, MUKHIN VIKTOR VASIL'EVICH
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CHEMISTRY
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM
INORGANIC CHEMISTRY
METALLURGY
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creator SHEMJAKINA IRINA VLADIMIROVNA
MURATOV EVGENIJ PAVLOVICH
SHEMJAKIN SERGEJ VLADIMIROVICH
MUKHIN VIKTOR VASIL'EVICH
description FIELD: chemistry. ^ SUBSTANCE: method of lithium chloride purification from admixtures involves obtaining processing medium of lithium chloride with lithium oxychloride residues by dissolution of processing lithium hydroxide in water or by preparation of processing lithium carbonate slurry, followed by chlorination of lithium hydroxide solution or lithium carbonate slurry by waste chlorine air mix of electrolytic cells in the presence of a catalyst used for lithium oxychloride reduction. pH of the obtained lithium chloride solution is corrected before continuous sorption purification with lithium hydroxide solution or lithium carbonate till hydroxyl ion (OH-) content is within 0.0002-0.005 mol/dm3. Lithium chloride solution undergoes sorption purification with cation exchange resin based on cross-linked macroporous polystyrol featuring subacid iminodiacetate groups inserted into the polymer matrix of subacid iminodiacetate groups with linear throughput rate of 3-20 m/h. The method improves purity degree of the processing lithium chloride solution and prolongs performance lifetime of cation exchange resin. ^ EFFECT: purified lithium chloride solution allows obtaining high-quality metal lithium. ^ 2 ex, 1 tbl, 3 dwg
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subjects CHEMISTRY
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM
INORGANIC CHEMISTRY
METALLURGY
title METHOD OF LITHIUM CHLORIDE PURIFICATION
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