Method for the hydrometallurgical recovery of lithium from the lithium manganese oxide-containing fraction of used galvanic cells
The invention relates to a method for the hydrometallurgical recovery of lithium from the lithium manganese oxide-containing fraction of used galvanic cells. According to the invention, a lithium manganese oxide-containing fraction having a particle size of up to 500 [mu]m is introduced into oxalic...
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| creator | SCHNEIDER MARK ANDRE KLIEHM NORBERT SPIELAU REBECCA STEINBILD MARTIN WILLEMS JOHANNES WOHLGEMUTH DAVID |
| description | The invention relates to a method for the hydrometallurgical recovery of lithium from the lithium manganese oxide-containing fraction of used galvanic cells. According to the invention, a lithium manganese oxide-containing fraction having a particle size of up to 500 [mu]m is introduced into oxalic acid in an amount that is hyperstoichiometric relative to the lithium manganese oxide content and in a solid-to-liquid ratio in the range of 10 to 250 g/l, and the compound is solubilized at temperatures of 30 to 70 DEG C, the lithium-containing solution formed is separated off and the remaining residue is washed at least twice, the wash solution containing the separated lithium and the lithium-containing wash solution are combined, the remaining manganese content dissolved is precipitated as a hydroxide, thereby reducing it, is separated off and washed and the remaining lithium-containing solution is further purified by conversion to its carbonate, chloride or sulphate form and optionally by subsequent crystallization. |
| format | Patent |
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According to the invention, a lithium manganese oxide-containing fraction having a particle size of up to 500 [mu]m is introduced into oxalic acid in an amount that is hyperstoichiometric relative to the lithium manganese oxide content and in a solid-to-liquid ratio in the range of 10 to 250 g/l, and the compound is solubilized at temperatures of 30 to 70 DEG C, the lithium-containing solution formed is separated off and the remaining residue is washed at least twice, the wash solution containing the separated lithium and the lithium-containing wash solution are combined, the remaining manganese content dissolved is precipitated as a hydroxide, thereby reducing it, is separated off and washed and the remaining lithium-containing solution is further purified by conversion to its carbonate, chloride or sulphate form and optionally by subsequent crystallization.</description><language>eng</language><subject>CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; METALLURGY ; PRETREATMENT OF RAW MATERIALS ; PRODUCTION AND REFINING OF METALS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2015</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20151014&DB=EPODOC&CC=CN&NR=104981552A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20151014&DB=EPODOC&CC=CN&NR=104981552A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SCHNEIDER MARK ANDRE</creatorcontrib><creatorcontrib>KLIEHM NORBERT</creatorcontrib><creatorcontrib>SPIELAU REBECCA</creatorcontrib><creatorcontrib>STEINBILD MARTIN</creatorcontrib><creatorcontrib>WILLEMS JOHANNES</creatorcontrib><creatorcontrib>WOHLGEMUTH DAVID</creatorcontrib><title>Method for the hydrometallurgical recovery of lithium from the lithium manganese oxide-containing fraction of used galvanic cells</title><description>The invention relates to a method for the hydrometallurgical recovery of lithium from the lithium manganese oxide-containing fraction of used galvanic cells. 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| subjects | CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Method for the hydrometallurgical recovery of lithium from the lithium manganese oxide-containing fraction of used galvanic cells |
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