CN108103317A - A kind of method that lithium is recycled from waste liquid containing lithium - Google Patents
A kind of method that lithium is recycled from waste liquid containing lithium Download PDFInfo
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- CN108103317A CN108103317A CN201711405790.1A CN201711405790A CN108103317A CN 108103317 A CN108103317 A CN 108103317A CN 201711405790 A CN201711405790 A CN 201711405790A CN 108103317 A CN108103317 A CN 108103317A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P10/20—Recycling
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Abstract
The present invention relates to a kind of methods that lithium is recycled from waste liquid containing lithium.Specifically, the present invention is efficiently extracted, gained extract liquor obtains lithium product after back extraction using the extraction organic phase of extractant, modification agent and diluent composition to containing lithium waste liquid.The lithium rate of recovery of this method extraction is high, and lithium sodium, lithium potassium separation selectivity are good, and recycling product purity is high；Extractant water solubility is extremely low, is easy to back extraction regeneration, recycles；This method has higher economic benefit.
Description
Technical field
The invention belongs to chemical technology fields.A kind of in particular it relates to method that lithium is recycled from waste liquid containing lithium.
Background technology
Elemental lithium has minimum atomic radius, is the most light metal being currently known, and has and many other metals member
The different chemical and physical features of element, therefore tool has been widely used.The application of lithium and its compound is related to glass, ceramics, doctor
The multiple fields such as medicine, smelting, refrigeration.Particularly in new energy field, lithium is known as " energy source element ", one side elemental lithium conduct
The important source material of lithium battery, demand are increasing；On the other hand, the isotope lithium -6 of lithium and lithium -7 can be respectively as controllable poly-
Become the conditioning agent and cooling agent of nuclear energy material and fission reactor.Therefore, the comprehensive development and utilization to lithium resource, particularly from useless
Lithium resource is recycled in liquid seems extremely urgent.
At present, lithium resource both domestic and external is essentially from lithium ore deposit and salt lake bittern lithium resource.Lithium salts is extracted from salt lake bittern
Technology method, mainly have the precipitation method, extraction, ion exchange adsorption, carbonizatin method, calcining leaching method, electroosmose process
Deng.In these production processes, due to the different characteristics of technical process, more waste liquid containing lithium can be generated.On the other hand, in lithium
Battery recycling field extracts the elements such as nickel, cobalt, iron by wet method, after back extraction processing, can also generate and largely give up containing lithium
Liquid, urgent need carry out recycling and carry lithium again.These waste liquids are with zwitterion dopant species are more, potassium and sodium ions content are excessively high, lithium
Ion concentration is low, the characteristics of being difficult to largely handle.Patent application CN106129519 is using TOPO- kerosene extraction agent to scrapping electricity
Lithium in the pickle liquor in pond is extracted, recyclable after back extraction to obtain lithium solution.Patent application CN105502551 is using mixed
It closes extract liquor and extraction and recovery has been carried out to the lithium in industrial wastewater, total rate of recovery is 82%-92%.Patent application
CN102002595 has carried out the lithium in old and useless battery extraction and recovery using ketone extractant, and the rate of recovery of lithium is 86%-
91%.
The content of the invention
It is an object of the invention to provide a kind of method that lithium is recycled from waste liquid containing lithium, this method is closed with technological process
Reason, the advantages of rate of recovery of lithium is high, technique and equipment are simple, product quality is high, production cost is low.
The first aspect of the present invention provides a kind of method that lithium is recycled from waste liquid containing lithium, including step：Using including
The extraction organic phase of a effective amount of (a) extractant, (b) modification agent and (c) diluent is extracted to containing lithium waste liquid, wherein：
The extractant is made of the mixture of formula (I) as follows and formula (II) structure,
In formula (I) or formula (II), Rf 1、Rf 2、Rf 3And Rf 4It is each independently group selected from the group below：H、F、Cl、Br、
The C of unsubstituted or halogen substitution1-6Alkyl；
R1For substituted or unsubstituted group selected from the group below：C1-6Alkyl, pyridyl group, furyl, thiazolyl, phenyl；Its
In, one or more hydrogen atoms that the substitution refers on group are substituted by substituent group selected from the group below：C1-6Alkyl, C1-6Alcoxyl
Base, Cl, Br；
R2、R3It is independently selected from the group of the following group：H、Cl、Br、-NH2、-NO2、C1-6Alkyl or C1-6Alkoxy；
The modification agent is selected from：Chlorination dioctyl Methylsulfonium Salt, chlorination dinonyl Methylsulfonium Salt, 1- butyl -3- methyl
Limidazolium hexafluorophosphate, double ten alkyl-dimethyls of chlorodimethyl benzyl phenyl ammonium, dodecyl dimethyl benzyl ammonium chloride, bromination
It is base ammonium, tricaprylylmethylammchloride chloride, three nonanylmethyl ammonium of chlorination, three decyl methyl ammonium of chlorination, tricaprylmethyl ammonium sulfate, three pungent
Ylmethyl ammonium carbonate or its combination；
And foreign ion selected from the group below is further included in the waste liquid containing lithium：Sodium ion, potassium ion, fluorine ion, sulfuric acid
Radical ion or its combination.
In another preference, in the waste liquid containing lithium, the concentration range of lithium ion is 0.001mol/L~2.5mol/
L。
In another preference, in the waste liquid containing lithium, containing sulfate ion, concentration range is 0.001mol/L
~3.5mol/L.
In another preference, total concentration of the extractant in organic phase is extracted is 0.41mol/L~1.5mol/
L。
In another preference, concentration of the modification agent in organic phase is extracted is 0.25mol/L~2.5mol/L.
In another preference, the diluent is selected from：Benzotrifluoride, dimethylbenzene, kerosene, octanone, chloroform, four chlorinations
Carbon, toluene, diethylbenzene, bromobenzene, methyl phenyl ethers anisole, 2- methyl cyclohexanones, methylisobutylketone, chlorobenzene, dichloro-benzenes, trichloro-benzenes, diphenyl ether,
Or its combination.
In another preference, the relative molar concentration ratio of the extractant (I) and extractant (II) is 0~50: 50
~1 (is preferably 1:50~50:1, more preferably 1:20~20:1).
In another preference, sodium ion is contained in the waste liquid containing lithium, and the concentration range of the sodium ion is
0.01mol/L~3.5mol/L.
In another preference, potassium ion is contained in the waste liquid containing lithium, and the concentration range of the potassium ion is
0.01mol/L~3.5mol/L.
In another preference, the method includes the steps：
(1) the extraction organic phase is provided；
(2) pH value of the water phase of waste liquid containing lithium is adjusted；
(3) with extraction organic phase with water mutually according to compared with certain, carry out single-stage or multitple extraction, obtain enrichment Li's
Extract organic phase；
(4) by the use of inorganic acid as strip liquor, the extraction organic phase of the enrichment Li of gained is stripped, obtains lithium product.
In another preference, the step (2) includes：Add in the pH value that alkali adjusts the water phase of waste liquid containing lithium.
In another preference, the alkali is selected from the group：NaOH、KOH、NH3、NH4OH or its combination.
In another preference, the inorganic acid is selected from the group：Hydrochloric acid, nitric acid, sulfuric acid or its combination.
It is to be understood that within the scope of the present invention, above-mentioned each technical characteristic of the invention and have in below (eg embodiment)
It can be combined with each other between each technical characteristic of body description, so as to form new or preferred technical solution.As space is limited, exist
This no longer tires out one by one states.
Specific embodiment
The present inventor's in-depth study by long-term, it has unexpectedly been found that a kind of extraction organic phase, the extraction are organic
It is mutually made of the mixture of such as formula (I) and formula (II) structure, " extractant-lithium chelate " can be formed with lithium ion.The extraction
Agent is used to separate the technique of lithium isotope, can effectively be enriched with Li, and with very high single-stage separation factor and distribution ratio.In this base
On plinth, inventor completes the present invention.
Extract organic phase
The extraction organic phase of the present invention includes a effective amount of (a) extractant, (b) modification agent and (c) diluent.Described
Extractant is made of the mixture of formula (I) as follows and formula (II) structure,
In formula (I) or formula (II), Rf 1、Rf 2、Rf 3And Rf 4It is each independently group selected from the group below：H、F、Cl、Br、
The C of unsubstituted or halogen substitution1-6Alkyl；
R1For substituted or unsubstituted group selected from the group below：C1-6Alkyl, pyridyl group, furyl, thiazolyl, phenyl；Its
In, one or more hydrogen atoms that the substitution refers on group are substituted by substituent group selected from the group below：C1-6Alkyl, C1-6Alcoxyl
Base, Cl, Br；
R2、R3It is independently selected from the group of the following group：H、Cl、Br、-NH2、-NO2、C1-6Alkyl or C1-6Alkoxy.
The modification agent is selected from：Chlorination dioctyl Methylsulfonium Salt, chlorination dinonyl Methylsulfonium Salt, 1- butyl -3- methyl
Limidazolium hexafluorophosphate, double ten alkyl-dimethyls of chlorodimethyl benzyl phenyl ammonium, dodecyl dimethyl benzyl ammonium chloride, bromination
It is base ammonium, tricaprylylmethylammchloride chloride, three nonanylmethyl ammonium of chlorination, three decyl methyl ammonium of chlorination, tricaprylmethyl ammonium sulfate, three pungent
Ylmethyl ammonium carbonate or its combination.
Preferably, the diluent is selected from：Benzotrifluoride, dimethylbenzene, kerosene, octanone, chloroform, carbon tetrachloride, toluene,
Diethylbenzene, bromobenzene, methyl phenyl ethers anisole, 2- methyl cyclohexanones, methylisobutylketone, chlorobenzene, dichloro-benzenes, trichloro-benzenes, diphenyl ether or its group
It closes.
The extractant simple synthetic method and at low cost, the fluoro-containing group wherein in extractant (I) has oil-soluble
The characteristics of good, water-soluble extremely low, excellent in oxidation resistance, effectively raise solubility of the extractant in organic phase is extracted.Compared with
Excellent, the concentration of the extractant in organic phase is extracted is 0.41mol/L~1.5mol/L.Preferably, the extraction
The relative molar concentration ratio of agent (I) and extractant (II) is 0: 50 to 50: 1.
The modification agent has the characteristics that polarity is big, is soluble in organic phase, can improve extractant and extraction lithium
The dissolubility of complex compound；On the other hand, modification agent has phase transfer ability, lithium ion can be promoted to enter from water phase transfer organic
Phase, thus substantially increase the extraction yield of lithium ion.Preferably, concentration of the modification agent in organic phase is extracted is
0.25mol/L~2.5mol/L.
The extraction organic phase can be after back extraction, and circulating repetition uses, thus can substantially reduce production cost.
Extractive recovery method
Waste liquid containing lithium refers to the waste water solution containing lithium ion, preferably, in waste liquid containing lithium of the present invention, lithium ion
Concentration range be 0.001mol/L~2.5mol/L.
These waste liquids have the characteristics that zwitterion dopant species are more, such as contain Na, K, Fe, Ca, Mg, Ni cation,
And the anionic impurities such as sulfate radical, phosphate radical, hexafluoro-phosphate radical, chlorine root, fluorine ion.Meanwhile sodium ion and potassium ion etc. are miscellaneous
The content of matter ion is big, is several times as much as lithium ion content, therefore has the characteristics that difficult extraction, difficult separation.
In another preference, in the waste liquid containing lithium, containing sulfate ion, concentration range is 0.001mol/L
~3.5mol/L.
In another preference, in the waste liquid containing lithium, containing sodium ion, concentration range be 0.01mol/L~
3.5mol/L。
In another preference, in the waste liquid containing lithium, containing potassium ion, concentration range be 0.01mol/L~
3.5mol/L。
The method of the present invention that lithium is recycled from waste liquid containing lithium, including step：Extraction is first prepared according to a certain ratio
Organic phase；Then a certain amount of alkali (NaOH, KOH, NH are added in the water of waste liquid containing lithium3Or NH4OH etc.), adjust pH value；Extraction
Organic phase, mutually according to compared with certain, carries out single-stage or multitple extraction with water.Gained organic phase, with inorganic acid (hydrochloric acid, nitre
Acid, sulfuric acid etc.) as strip liquor, lithium product is obtained after back extraction.The rate of recovery of lithium is 88%-99%, and product purity can reach
99%.
Main advantages of the present invention include：
(1) method of extraction and recovery lithium provided by the invention, can under conditions of complexity (zwitterion dopant species
More, impurity content height) lithium is efficiently extracted, the rate of recovery is high, and lithium sodium, lithium potassium separation selectivity are good, and recycling product purity is high.
(2) extractant water solubility of the invention is extremely low, oil-soluble is good, excellent in oxidation resistance；Extractant be easy to back extraction regeneration,
It recycles.This method has higher economic benefit.
With reference to specific embodiment, the present invention is further explained.It is to be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.The experimental method of actual conditions is not specified in the following example, usually according to conventional strip
Part or according to the condition proposed by manufacturer.Unless otherwise stated, otherwise percentage and number are calculated by weight.
Embodiment 1
Extract organic phase：
Extractant：0.50mol/L0.10mol/LModification agent：0.40mol/L chlorination dioctyls
Methylsulfonium Salt；Diluent：Chloroform.
The water of waste liquid containing lithium mutually mainly contains：0.06mol/L Li+, 1.5mol/L Na+；0.3mol/L K+, 0.001mol/L
Ni2+, 0.9mol/L SO4 2-, 0.061mol/L Cl-。
Extracting process：The water of waste liquid containing lithium is added to a certain amount of NaOH, and it is 12~13 to adjust pH value, extracts organic phase and water
Mutually according to compared to 1:1, come into full contact with single-stage extraction.After split-phase, by the use of the hydrochloric acid of 6mol/L as strip liquor, lithium production is obtained after back extraction
Product.The concentration of lithium is 0.003mol/L in raffinate, and the single-stage extraction rate of recovery of lithium is 95%.
Embodiment 2
Extract organic phase：
Extractant：0.15mol/L0.35mol/LModification agent：0.30mol/L chlorination dinonyl first
Base sulfonium salt；Diluent：Octanone.
The water of waste liquid containing lithium mutually mainly contains：0.15mol/L Li+, 1.10mol/L Na+；0.32mol/L K+, 0.78mol/
L SO4 2-, 0.01mol/L F-。
Extracting process：The water of waste liquid containing lithium is added to a certain amount of NH4OH, adjust pH value be 13~14, extraction organic phase with
Water is mutually according to compared to 2:1, come into full contact with single-stage extraction.Gained organic phase by the use of the hydrochloric acid of 6mol/L as strip liquor, obtains after back extraction
To lithium product.The concentration of lithium is 0.014mol/L in raffinate, and the single-stage extraction rate of recovery of lithium is 91%.Meanwhile the extraction side
Method also has excellent lithium sodium, lithium potassium separating effect, through sodium ion and potassium concentration in analytical extraction organic phase, can obtain lithium sodium
Separation β=3.8 × 104, lithium potassium separation β=1.8 × 103。
Embodiment 3
Extract organic phase：
Extractant：0.10mol/L0.10mol/LModification agent：Three nonyl of 0.30mol/L chlorinations
Methyl ammonium；Diluent：Methylisobutylketone.
The water of waste liquid containing lithium mutually mainly contains：0.04mol/L Li+, 1.10mol/L Na+；0.32mol/L K+。
Extracting process：The water of waste liquid containing lithium is added to a certain amount of NH3, it is 12~13 to adjust pH value, extracts organic phase and water
Mutually according to compared to 1:4,3 grades of extractions of adverse current.Gained organic phase by the use of the hydrochloric acid of 4mol/L as strip liquor, obtains after 2 grades of back extraction of adverse current
To lithium product.The concentration of lithium is 0.005mol/L in raffinate, and the rate of recovery of lithium is 88%, product purity>99%.
Embodiment 4
Extract organic phase：
Extractant：0.03mol/L0.60mol/LModification agent：0.60mol/L tricaprylmethyl sulphur
Sour ammonium；Diluent：Chloroform.
The water of waste liquid containing lithium mutually mainly contains：1.4mol/L Li+, 0.65mol/L Na+, 0.35mol/L K+, 1.2mol/L
SO4 2-。
Extracting process：The water of waste liquid containing lithium is added to a certain amount of KOH, adjusts pH value>14, extraction organic phase and water phase according to
Compared to 6:1,4 grades of extractions of adverse current.By the use of the hydrochloric acid of 6mol/L as strip liquor, lithium production is obtained after 3 grades of back extraction of adverse current for gained organic phase
Product.The concentration of lithium is 0.02mol/L in raffinate, and the rate of recovery of lithium is 99%, product purity>99%.
Embodiment 5
Extract organic phase：
Extractant：0.55mol/LModification agent：0.55mol/L 1- butyl -3- methylimidazole hexafluoro phosphorus
Hydrochlorate；Diluent：Chloroform.
The water of waste liquid containing lithium mutually mainly contains：0.15mol/L Li+, 1.10mol/L Na+；0.32mol/L K+, 0.78mol/
L SO4 2-, 0.01mol/L F-。
Extracting process：The water of waste liquid containing lithium is added to a certain amount of KOH, adjusts pH value>14, extraction organic phase and water phase according to
Compared to 3:1, single-stage extraction.Gained organic phase by the use of the nitric acid of 4mol/L as strip liquor, obtains lithium product after back extraction.Raffinate
The concentration of middle lithium is 0.005mol/L, and the single-stage extraction rate of recovery of lithium is 97%.
Embodiment 6
Extract organic phase：
Extractant：0.15mol/L0.10mol/LModification agent：0.30mol/L chlorination trioctylphosphine first
Base ammonium；Diluent：Dichloro-benzenes.
The water of waste liquid containing lithium mutually mainly contains：0.04mol/L Li+, 1.10mol/L Na+；0.32mol/L K+。
Extracting process：The water of waste liquid containing lithium is added to a certain amount of NaOH, and it is 12~13 to adjust pH value, extracts organic phase and water
Mutually according to compared to 2:1, come into full contact with extraction.Gained organic phase by the use of the hydrochloric acid of 4mol/L as strip liquor, obtains lithium production after back extraction
Product.The concentration of lithium is 0.004mol/L in raffinate, and the single-stage extraction rate of recovery of lithium is 90%.
Embodiment 7
Extract organic phase：
Extractant：0.20mol/L0.02mol/LModification agent：0.30mol/L chlorination dodecyls
Dimethyl benzyl ammonium；Diluent：Chloroform.
The water of waste liquid containing lithium mutually mainly contains：0.04mol/L Li+, 1.10mol/L Na+；0.32mol/L K+。
Extracting process：The water of waste liquid containing lithium is added to a certain amount of KOH, and it is 12~13 to adjust pH value, extracts organic phase and water
Mutually according to compared to 2:1, come into full contact with extraction.Gained organic phase by the use of the sulfuric acid of 3mol/L as strip liquor, obtains lithium production after back extraction
Product.The concentration of lithium is 0.005mol/L in raffinate, and the single-stage extraction rate of recovery of lithium is 88%.
All references mentioned in the present invention is incorporated herein by reference, independent just as each document
It is incorporated as with reference to such.In addition, it should also be understood that, after reading the above teachings of the present invention, those skilled in the art can
To be made various changes or modifications to the present invention, such equivalent forms equally fall within the model that the application the appended claims are limited
It encloses.
Claims (10)
- A kind of 1. method that lithium is recycled from waste liquid containing lithium, which is characterized in that including step：Extract using including a effective amount of (a) The extraction organic phase of agent, (b) modification agent and (c) diluent is taken, is extracted to containing lithium waste liquid, wherein：The extractant is made of the mixture of formula (I) as follows and formula (II) structure,In formula (I) or formula (II), Rf 1、WithIt is each independently group selected from the group below：H, F, Cl, Br, not Substitution or the C of halogen substitution1-6Alkyl；R1For substituted or unsubstituted group selected from the group below：C1-6Alkyl, pyridyl group, furyl, thiazolyl, phenyl；Wherein, institute One or more hydrogen atoms that the substitution stated refers on group are substituted by substituent group selected from the group below：C1-6Alkyl, C1-6Alkoxy, Cl、Br；R2、R3It is independently selected from the group of the following group：H、Cl、Br、-NH2、-NO2、C1-6Alkyl or C1-6Alkoxy；The modification agent is selected from：Chlorination dioctyl Methylsulfonium Salt, chlorination dinonyl Methylsulfonium Salt, 1- butyl -3- methylimidazoles Hexafluorophosphate, chlorodimethyl benzyl phenyl ammonium, dodecyl dimethyl benzyl ammonium chloride, bromination didecyl Dimethy Ammonium, tricaprylylmethylammchloride chloride, three nonanylmethyl ammonium of chlorination, three decyl methyl ammonium of chlorination, tricaprylmethyl ammonium sulfate, trioctylphosphine Methyl carbonic acid ammonium or its combination；And foreign ion selected from the group below is further included in the waste liquid containing lithium：Sodium ion, potassium ion, fluorine ion, sulfate radical from Son or its combination.
- 2. the method as described in claim 1, which is characterized in that in the waste liquid containing lithium, the concentration range of lithium ion is 0.001mol/L~2.5mol/L.
- 3. the method as described in claim 1, which is characterized in that in the waste liquid containing lithium, contain sulfate ion, concentration Scope is 0.001mol/L~3.5mol/L.
- 4. the method as described in claim 1, which is characterized in that total concentration of the extractant in organic phase is extracted be 0.41mol/L~1.5mol/L.
- 5. the method for lithium is recycled from waste liquid containing lithium as described in claim 1, which is characterized in that the modification agent is extracting Concentration in organic phase is 0.25mol/L~2.5mol/L.
- 6. the method as described in claim 1, which is characterized in that the diluent is selected from：Benzotrifluoride, dimethylbenzene, kerosene, Octanone, chloroform, carbon tetrachloride, toluene, diethylbenzene, bromobenzene, methyl phenyl ethers anisole, 2- methyl cyclohexanones, methylisobutylketone, chlorobenzene, dichloro Benzene, trichloro-benzenes, diphenyl ether or its combination.
- 7. the method as described in claim 1, which is characterized in that the extractant (I) and the Relative mole of extractant (II) Concentration ratio (is preferably 1 for 0~50: 50~1:50~50:1, more preferably 1:20~20:1).
- 8. the method as described in claim 1, which is characterized in that contain sodium ion in the waste liquid containing lithium, and the sodium from The concentration range of son is 0.01mol/L~3.5mol/L.
- 9. the method as described in claim 1, which is characterized in that contain potassium ion in the waste liquid containing lithium, and the potassium from The concentration range of son is 0.01mol/L~3.5mol/L.
- 10. the method as described in claim 1, which is characterized in that the method includes the steps：(1) the extraction organic phase is provided；(2) pH value of the water phase of waste liquid containing lithium is adjusted；(3) with extraction organic phase with water mutually according to compared with certain, carry out single-stage or multitple extraction, obtain the extraction of enrichment Li Organic phase；(4) by the use of inorganic acid as strip liquor, the extraction organic phase of the enrichment Li of gained is stripped, obtains lithium product.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108754141A (en) * | 2018-08-22 | 2018-11-06 | 中国科学院上海有机化学研究所 | A kind of extraction organic phase and its application |
| CN108950247A (en) * | 2018-08-22 | 2018-12-07 | 中国科学院上海有机化学研究所 | A kind of extraction system and its application |
| CN109055743A (en) * | 2018-08-01 | 2018-12-21 | 中国科学院上海有机化学研究所 | A kind of extracts composition and its application |
| CN114317960A (en) * | 2020-09-29 | 2022-04-12 | 中国科学院上海有机化学研究所 | Extraction system for extracting lithium ions and application thereof |
| CN115646190A (en) * | 2022-11-11 | 2023-01-31 | 中国科学院青海盐湖研究所 | Co-production of ultra-pure lithium salt and 6 method for Li isotope and application thereof |
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| CN109055743A (en) * | 2018-08-01 | 2018-12-21 | 中国科学院上海有机化学研究所 | A kind of extracts composition and its application |
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| CN108754141B (en) * | 2018-08-22 | 2020-12-08 | 中国科学院上海有机化学研究所 | Extracted organic phase and application thereof |
| CN108950247B (en) * | 2018-08-22 | 2022-07-19 | 中国科学院上海有机化学研究所 | Extraction system and application thereof |
| CN114317960A (en) * | 2020-09-29 | 2022-04-12 | 中国科学院上海有机化学研究所 | Extraction system for extracting lithium ions and application thereof |
| CN114317960B (en) * | 2020-09-29 | 2023-08-11 | 中国科学院上海有机化学研究所 | Extraction system for extracting lithium ions and application thereof |
| CN115646190A (en) * | 2022-11-11 | 2023-01-31 | 中国科学院青海盐湖研究所 | Co-production of ultra-pure lithium salt and 6 method for Li isotope and application thereof |
| CN115646190B (en) * | 2022-11-11 | 2023-09-12 | 中国科学院青海盐湖研究所 | Co-production of ultra-high purity lithium salt and 6 method for producing Li isotopes and use thereof |
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