Method for purifying fluorine-containing lithium salt
The invention provides a fluorine-containing lithium salt purification method which comprises the following steps: S1, mixing fluorine-containing lithium salt powder with water to obtain a mixed system, and adding acid into the mixed system for reaction to obtain a first lithium-containing solution;...
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| creator | LI YUNXIA ZHANG DANNI SHI QIHUA LYU ZHENGZHONG |
| description | The invention provides a fluorine-containing lithium salt purification method which comprises the following steps: S1, mixing fluorine-containing lithium salt powder with water to obtain a mixed system, and adding acid into the mixed system for reaction to obtain a first lithium-containing solution; s2, adjusting the first lithium-containing solution to be weakly acidic, and then adding a composite fluorine removal agent into the first lithium-containing solution for reaction to obtain a second lithium-containing solution; the composite fluorine removal agent comprises an aluminum fluorine removal agent, calcium hydroxide and lanthanum-loaded modified charcoal, and the mass ratio of the aluminum fluorine removal agent to the calcium hydroxide to the lanthanum-loaded modified charcoal is (5-8): (1-3): (1-5); s3, adjusting the pH value of the second lithium-containing solution to be neutral or alkalescent, continuing the reaction, and after the reaction is finished, carrying out solid-liquid separation to obtai |
| format | Patent |
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s2, adjusting the first lithium-containing solution to be weakly acidic, and then adding a composite fluorine removal agent into the first lithium-containing solution for reaction to obtain a second lithium-containing solution; the composite fluorine removal agent comprises an aluminum fluorine removal agent, calcium hydroxide and lanthanum-loaded modified charcoal, and the mass ratio of the aluminum fluorine removal agent to the calcium hydroxide to the lanthanum-loaded modified charcoal is (5-8): (1-3): (1-5); s3, adjusting the pH value of the second lithium-containing solution to be neutral or alkalescent, continuing the reaction, and after the reaction is finished, carrying out solid-liquid separation to obtai</description><language>chi ; eng</language><subject>BASIC ELECTRIC ELEMENTS ; CHEMISTRY ; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ; ELECTRICITY ; INORGANIC CHEMISTRY ; METALLURGY ; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><creationdate>2024</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=20240315&DB=EPODOC&CC=CN&NR=117699829A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240315&DB=EPODOC&CC=CN&NR=117699829A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LI YUNXIA</creatorcontrib><creatorcontrib>ZHANG DANNI</creatorcontrib><creatorcontrib>SHI QIHUA</creatorcontrib><creatorcontrib>LYU ZHENGZHONG</creatorcontrib><title>Method for purifying fluorine-containing lithium salt</title><description>The invention provides a fluorine-containing lithium salt purification method which comprises the following steps: S1, mixing fluorine-containing lithium salt powder with water to obtain a mixed system, and adding acid into the mixed system for reaction to obtain a first lithium-containing solution; s2, adjusting the first lithium-containing solution to be weakly acidic, and then adding a composite fluorine removal agent into the first lithium-containing solution for reaction to obtain a second lithium-containing solution; the composite fluorine removal agent comprises an aluminum fluorine removal agent, calcium hydroxide and lanthanum-loaded modified charcoal, and the mass ratio of the aluminum fluorine removal agent to the calcium hydroxide to the lanthanum-loaded modified charcoal is (5-8): (1-3): (1-5); s3, adjusting the pH value of the second lithium-containing solution to be neutral or alkalescent, continuing the reaction, and after the reaction is finished, carrying out solid-liquid separation to obtai</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CHEMISTRY</subject><subject>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</subject><subject>ELECTRICITY</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD1TS3JyE9RSMsvUigoLcpMq8zMS1dIyynNL8rMS9VNzs8rSczMA4nlZJZkZJbmKhQn5pTwMLCmJeYUp_JCaW4GRTfXEGcP3dSC_PjU4oLE5NS81JJ4Zz9DQ3MzS0sLI0tHY2LUAACiyy3U</recordid><startdate>20240315</startdate><enddate>20240315</enddate><creator>LI YUNXIA</creator><creator>ZHANG DANNI</creator><creator>SHI QIHUA</creator><creator>LYU ZHENGZHONG</creator><scope>EVB</scope></search><sort><creationdate>20240315</creationdate><title>Method for purifying fluorine-containing lithium salt</title><author>LI YUNXIA ; 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s2, adjusting the first lithium-containing solution to be weakly acidic, and then adding a composite fluorine removal agent into the first lithium-containing solution for reaction to obtain a second lithium-containing solution; the composite fluorine removal agent comprises an aluminum fluorine removal agent, calcium hydroxide and lanthanum-loaded modified charcoal, and the mass ratio of the aluminum fluorine removal agent to the calcium hydroxide to the lanthanum-loaded modified charcoal is (5-8): (1-3): (1-5); s3, adjusting the pH value of the second lithium-containing solution to be neutral or alkalescent, continuing the reaction, and after the reaction is finished, carrying out solid-liquid separation to obtai</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY |
| title | Method for purifying fluorine-containing lithium salt |
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