Method for preparing battery grade lithium carbonate by using salt lake lithium carbonate
The invention discloses a method for preparing battery grade lithium carbonate by using salt lake lithium carbonate, which belongs to the technical field of battery materials, and comprises the following steps: leaching the salt lake lithium carbonate with an acid solution, reacting with a sodium ca...
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| creator | LUO DIKUO YU MENG GONG QINXUE LIU YONGQI LIU SHAOKUI LI CHANGDONG |
| description | The invention discloses a method for preparing battery grade lithium carbonate by using salt lake lithium carbonate, which belongs to the technical field of battery materials, and comprises the following steps: leaching the salt lake lithium carbonate with an acid solution, reacting with a sodium carbonate solution after acid leaching, carrying out filter pressing to obtain crude lithium carbonate, washing the crude lithium carbonate with water to obtain a first water washing solution, and drying the first water washing solution to obtain a second water washing solution; leaching the washed lithium carbonate with an acid solution again, adding calcium hydroxide to adjust the pH value to 10-12, removing impurities to obtain an impurity-removed solution, adding sodium carbonate into the impurity-removed solution, uniformly stirring to obtain a mixed solution, passing the mixed solution through a resin column, adsorbing and removing calcium to obtain a calcium-removed solution, reacting the impurity-removed solu |
| format | Patent |
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leaching the washed lithium carbonate with an acid solution again, adding calcium hydroxide to adjust the pH value to 10-12, removing impurities to obtain an impurity-removed solution, adding sodium carbonate into the impurity-removed solution, uniformly stirring to obtain a mixed solution, passing the mixed solution through a resin column, adsorbing and removing calcium to obtain a calcium-removed solution, reacting the impurity-removed solu</description><language>chi ; eng</language><subject>CHEMISTRY ; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS</subject><creationdate>2023</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=20230606&DB=EPODOC&CC=CN&NR=116216749A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230606&DB=EPODOC&CC=CN&NR=116216749A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LUO DIKUO</creatorcontrib><creatorcontrib>YU MENG</creatorcontrib><creatorcontrib>GONG QINXUE</creatorcontrib><creatorcontrib>LIU YONGQI</creatorcontrib><creatorcontrib>LIU SHAOKUI</creatorcontrib><creatorcontrib>LI CHANGDONG</creatorcontrib><title>Method for preparing battery grade lithium carbonate by using salt lake lithium carbonate</title><description>The invention discloses a method for preparing battery grade lithium carbonate by using salt lake lithium carbonate, which belongs to the technical field of battery materials, and comprises the following steps: leaching the salt lake lithium carbonate with an acid solution, reacting with a sodium carbonate solution after acid leaching, carrying out filter pressing to obtain crude lithium carbonate, washing the crude lithium carbonate with water to obtain a first water washing solution, and drying the first water washing solution to obtain a second water washing solution; leaching the washed lithium carbonate with an acid solution again, adding calcium hydroxide to adjust the pH value to 10-12, removing impurities to obtain an impurity-removed solution, adding sodium carbonate into the impurity-removed solution, uniformly stirring to obtain a mixed solution, passing the mixed solution through a resin column, adsorbing and removing calcium to obtain a calcium-removed solution, reacting the impurity-removed solu</description><subject>CHEMISTRY</subject><subject>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZIj0TS3JyE9RSMsvUigoSi1ILMrMS1dISiwpSS2qVEgvSkxJVcjJLMnILM1VSE4sSsrPSyxJVUiqVCgtBiksTswpUchJzMaiiIeBNS0xpziVF0pzMyi6uYY4e-imFuTHpxYXJCan5qWWxDv7GRqaGRmamZtYOhoTowYA-IM64A</recordid><startdate>20230606</startdate><enddate>20230606</enddate><creator>LUO DIKUO</creator><creator>YU MENG</creator><creator>GONG QINXUE</creator><creator>LIU YONGQI</creator><creator>LIU SHAOKUI</creator><creator>LI CHANGDONG</creator><scope>EVB</scope></search><sort><creationdate>20230606</creationdate><title>Method for preparing battery grade lithium carbonate by using salt lake lithium carbonate</title><author>LUO DIKUO ; 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leaching the washed lithium carbonate with an acid solution again, adding calcium hydroxide to adjust the pH value to 10-12, removing impurities to obtain an impurity-removed solution, adding sodium carbonate into the impurity-removed solution, uniformly stirring to obtain a mixed solution, passing the mixed solution through a resin column, adsorbing and removing calcium to obtain a calcium-removed solution, reacting the impurity-removed solu</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS |
| title | Method for preparing battery grade lithium carbonate by using salt lake lithium carbonate |
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