Método para preparar carbonato de litio grado bateria desde sal de carbonato de litio de lago
The present application discloses a method for preparing battery-grade lithium carbonate from salt lake lithium carbonate, and belongs to the technical field of battery materials. The method includes the following steps: subjecting the salt lake lithium carbonate to leaching with an acid solution, s...
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| creator | Changdong LI Shaokui LIU Meng YU Qinxue GONG Yongqi LIU Dikuo LUO |
| description | The present application discloses a method for preparing battery-grade lithium carbonate from salt lake lithium carbonate, and belongs to the technical field of battery materials. The method includes the following steps: subjecting the salt lake lithium carbonate to leaching with an acid solution, subjecting a solution obtained after the leaching to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain crude lithium carbonate; washing the crude lithium carbonate with water to obtain a first water-washing solution, and subjecting the washed crude lithium carbonate to leaching once again with an acid solution; adjusting a pH with calcium hydroxide to 10 to 12 for impurity removal to obtain an impurity-removed solution, adding sodium carbonate to the impurity-removed solution, and thoroughly stirring a resulting mixture to obtain a mixed solution; allowing the mixed solution to pass through a resin column for calcium removal by adsorption to obtain a calcium-removed solution; subjecting the calcium-removed solution to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain lithium carbonate; and washing the lithium carbonate with an aqueous solution of carbon dioxide to obtain a second water-washing solution and water-washed lithium carbonate, and oven-drying the water-washed lithium carbonate to obtain the battery-grade lithium carbonate. The present application can effectively prepare salt lake lithium carbonate into battery-grade lithium carbonate with extremely high purity and lithium phosphate, and effectively improve a yield of lithium.
The present application relates to the technical field of battery materials, and discloses a method for preparing battery-grade lithium carbonate by using salt lake lithium carbonate, comprising the following steps: leaching the salt lake lithium carbonate by using an acid solution; enabling a solution obtained by acid leaching to react with a sodium carbonate solution, and carrying out filter pressing to obtain crude lithium carbonate; using water to wash the crude lithium carbonate to obtain a first water washing solution; leaching the washed lithium carbonate again by using the acid solution; adding calcium hydroxide to adjust the pH value to 10-12, and removing impurities to obtain an impurity-removed solution; adding sodium carbonate into the impurity-removed solution, and uniformly sti |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_CL2023001834A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>CL2023001834A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_CL2023001834A13</originalsourceid><addsrcrecordid>eNrjZIjzPbyyJD8lX6EgsShRoaAoFUQXKSQnFiXl5yWW5CukpCrkZJZk5iukFyUClSUllqQWZSYChYuBMsWJOSAFWFSDGInp-TwMrGmJOcWpvFCam0HZzTXE2UM3tSA_PrW4IDE5NS-1JN7Zx8jAyNjAwNDC2MTR0Jg4VQAo5Tzq</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Método para preparar carbonato de litio grado bateria desde sal de carbonato de litio de lago</title><source>esp@cenet</source><creator>Changdong LI ; Shaokui LIU ; Meng YU ; Qinxue GONG ; Yongqi LIU ; Dikuo LUO</creator><creatorcontrib>Changdong LI ; Shaokui LIU ; Meng YU ; Qinxue GONG ; Yongqi LIU ; Dikuo LUO</creatorcontrib><description>The present application discloses a method for preparing battery-grade lithium carbonate from salt lake lithium carbonate, and belongs to the technical field of battery materials. The method includes the following steps: subjecting the salt lake lithium carbonate to leaching with an acid solution, subjecting a solution obtained after the leaching to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain crude lithium carbonate; washing the crude lithium carbonate with water to obtain a first water-washing solution, and subjecting the washed crude lithium carbonate to leaching once again with an acid solution; adjusting a pH with calcium hydroxide to 10 to 12 for impurity removal to obtain an impurity-removed solution, adding sodium carbonate to the impurity-removed solution, and thoroughly stirring a resulting mixture to obtain a mixed solution; allowing the mixed solution to pass through a resin column for calcium removal by adsorption to obtain a calcium-removed solution; subjecting the calcium-removed solution to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain lithium carbonate; and washing the lithium carbonate with an aqueous solution of carbon dioxide to obtain a second water-washing solution and water-washed lithium carbonate, and oven-drying the water-washed lithium carbonate to obtain the battery-grade lithium carbonate. The present application can effectively prepare salt lake lithium carbonate into battery-grade lithium carbonate with extremely high purity and lithium phosphate, and effectively improve a yield of lithium.
The present application relates to the technical field of battery materials, and discloses a method for preparing battery-grade lithium carbonate by using salt lake lithium carbonate, comprising the following steps: leaching the salt lake lithium carbonate by using an acid solution; enabling a solution obtained by acid leaching to react with a sodium carbonate solution, and carrying out filter pressing to obtain crude lithium carbonate; using water to wash the crude lithium carbonate to obtain a first water washing solution; leaching the washed lithium carbonate again by using the acid solution; adding calcium hydroxide to adjust the pH value to 10-12, and removing impurities to obtain an impurity-removed solution; adding sodium carbonate into the impurity-removed solution, and uniformly stirring to obtain a mixed solution; enabling the mixed solution to flow through a resin column to perform calcium adsorption and removal, thereby obtaining a calcium-removed solution; enabling the calcium-removed solution to react with the sodium carbonate solution, and carrying out filter pressing to obtain lithium carbonate; and using an aqueous solution of carbon dioxide to wash the lithium carbonate to obtain a second water washing solution and washed lithium carbonate, and drying the washed lithium carbonate to obtain the battery-grade lithium carbonate. According to the present application, salt lake lithium carbonate can be effectively prepared into battery-grade lithium carbonate and lithium phosphate having extremely high purity, and the yield of lithium is effectively improved.</description><language>spa</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>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=20240913&DB=EPODOC&CC=CL&NR=2023001834A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240913&DB=EPODOC&CC=CL&NR=2023001834A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Changdong LI</creatorcontrib><creatorcontrib>Shaokui LIU</creatorcontrib><creatorcontrib>Meng YU</creatorcontrib><creatorcontrib>Qinxue GONG</creatorcontrib><creatorcontrib>Yongqi LIU</creatorcontrib><creatorcontrib>Dikuo LUO</creatorcontrib><title>Método para preparar carbonato de litio grado bateria desde sal de carbonato de litio de lago</title><description>The present application discloses a method for preparing battery-grade lithium carbonate from salt lake lithium carbonate, and belongs to the technical field of battery materials. The method includes the following steps: subjecting the salt lake lithium carbonate to leaching with an acid solution, subjecting a solution obtained after the leaching to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain crude lithium carbonate; washing the crude lithium carbonate with water to obtain a first water-washing solution, and subjecting the washed crude lithium carbonate to leaching once again with an acid solution; adjusting a pH with calcium hydroxide to 10 to 12 for impurity removal to obtain an impurity-removed solution, adding sodium carbonate to the impurity-removed solution, and thoroughly stirring a resulting mixture to obtain a mixed solution; allowing the mixed solution to pass through a resin column for calcium removal by adsorption to obtain a calcium-removed solution; subjecting the calcium-removed solution to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain lithium carbonate; and washing the lithium carbonate with an aqueous solution of carbon dioxide to obtain a second water-washing solution and water-washed lithium carbonate, and oven-drying the water-washed lithium carbonate to obtain the battery-grade lithium carbonate. The present application can effectively prepare salt lake lithium carbonate into battery-grade lithium carbonate with extremely high purity and lithium phosphate, and effectively improve a yield of lithium.
The present application relates to the technical field of battery materials, and discloses a method for preparing battery-grade lithium carbonate by using salt lake lithium carbonate, comprising the following steps: leaching the salt lake lithium carbonate by using an acid solution; enabling a solution obtained by acid leaching to react with a sodium carbonate solution, and carrying out filter pressing to obtain crude lithium carbonate; using water to wash the crude lithium carbonate to obtain a first water washing solution; leaching the washed lithium carbonate again by using the acid solution; adding calcium hydroxide to adjust the pH value to 10-12, and removing impurities to obtain an impurity-removed solution; adding sodium carbonate into the impurity-removed solution, and uniformly stirring to obtain a mixed solution; enabling the mixed solution to flow through a resin column to perform calcium adsorption and removal, thereby obtaining a calcium-removed solution; enabling the calcium-removed solution to react with the sodium carbonate solution, and carrying out filter pressing to obtain lithium carbonate; and using an aqueous solution of carbon dioxide to wash the lithium carbonate to obtain a second water washing solution and washed lithium carbonate, and drying the washed lithium carbonate to obtain the battery-grade lithium carbonate. According to the present application, salt lake lithium carbonate can be effectively prepared into battery-grade lithium carbonate and lithium phosphate having extremely high purity, and the yield of lithium is effectively improved.</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>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZIjzPbyyJD8lX6EgsShRoaAoFUQXKSQnFiXl5yWW5CukpCrkZJZk5iukFyUClSUllqQWZSYChYuBMsWJOSAFWFSDGInp-TwMrGmJOcWpvFCam0HZzTXE2UM3tSA_PrW4IDE5NS-1JN7Zx8jAyNjAwNDC2MTR0Jg4VQAo5Tzq</recordid><startdate>20240913</startdate><enddate>20240913</enddate><creator>Changdong LI</creator><creator>Shaokui LIU</creator><creator>Meng YU</creator><creator>Qinxue GONG</creator><creator>Yongqi LIU</creator><creator>Dikuo LUO</creator><scope>EVB</scope></search><sort><creationdate>20240913</creationdate><title>Método para preparar carbonato de litio grado bateria desde sal de carbonato de litio de lago</title><author>Changdong LI ; Shaokui LIU ; Meng YU ; Qinxue GONG ; Yongqi LIU ; Dikuo LUO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CL2023001834A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>spa</language><creationdate>2024</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><toplevel>online_resources</toplevel><creatorcontrib>Changdong LI</creatorcontrib><creatorcontrib>Shaokui LIU</creatorcontrib><creatorcontrib>Meng YU</creatorcontrib><creatorcontrib>Qinxue GONG</creatorcontrib><creatorcontrib>Yongqi LIU</creatorcontrib><creatorcontrib>Dikuo LUO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Changdong LI</au><au>Shaokui LIU</au><au>Meng YU</au><au>Qinxue GONG</au><au>Yongqi LIU</au><au>Dikuo LUO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Método para preparar carbonato de litio grado bateria desde sal de carbonato de litio de lago</title><date>2024-09-13</date><risdate>2024</risdate><abstract>The present application discloses a method for preparing battery-grade lithium carbonate from salt lake lithium carbonate, and belongs to the technical field of battery materials. The method includes the following steps: subjecting the salt lake lithium carbonate to leaching with an acid solution, subjecting a solution obtained after the leaching to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain crude lithium carbonate; washing the crude lithium carbonate with water to obtain a first water-washing solution, and subjecting the washed crude lithium carbonate to leaching once again with an acid solution; adjusting a pH with calcium hydroxide to 10 to 12 for impurity removal to obtain an impurity-removed solution, adding sodium carbonate to the impurity-removed solution, and thoroughly stirring a resulting mixture to obtain a mixed solution; allowing the mixed solution to pass through a resin column for calcium removal by adsorption to obtain a calcium-removed solution; subjecting the calcium-removed solution to a reaction with a sodium carbonate solution, and subjecting a resulting reaction system to pressure filtration to obtain lithium carbonate; and washing the lithium carbonate with an aqueous solution of carbon dioxide to obtain a second water-washing solution and water-washed lithium carbonate, and oven-drying the water-washed lithium carbonate to obtain the battery-grade lithium carbonate. The present application can effectively prepare salt lake lithium carbonate into battery-grade lithium carbonate with extremely high purity and lithium phosphate, and effectively improve a yield of lithium.
The present application relates to the technical field of battery materials, and discloses a method for preparing battery-grade lithium carbonate by using salt lake lithium carbonate, comprising the following steps: leaching the salt lake lithium carbonate by using an acid solution; enabling a solution obtained by acid leaching to react with a sodium carbonate solution, and carrying out filter pressing to obtain crude lithium carbonate; using water to wash the crude lithium carbonate to obtain a first water washing solution; leaching the washed lithium carbonate again by using the acid solution; adding calcium hydroxide to adjust the pH value to 10-12, and removing impurities to obtain an impurity-removed solution; adding sodium carbonate into the impurity-removed solution, and uniformly stirring to obtain a mixed solution; enabling the mixed solution to flow through a resin column to perform calcium adsorption and removal, thereby obtaining a calcium-removed solution; enabling the calcium-removed solution to react with the sodium carbonate solution, and carrying out filter pressing to obtain lithium carbonate; and using an aqueous solution of carbon dioxide to wash the lithium carbonate to obtain a second water washing solution and washed lithium carbonate, and drying the washed lithium carbonate to obtain the battery-grade lithium carbonate. According to the present application, salt lake lithium carbonate can be effectively prepared into battery-grade lithium carbonate and lithium phosphate having extremely high purity, and the yield of lithium is effectively improved.</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 | Método para preparar carbonato de litio grado bateria desde sal de carbonato de litio de lago |
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