CN109055763A - A kind of method of elemental lithium selectivity salt Ore Leaching in aluminium electrolyte - Google Patents
A kind of method of elemental lithium selectivity salt Ore Leaching in aluminium electrolyte Download PDFInfo
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- CN109055763A CN109055763A CN201811155285.0A CN201811155285A CN109055763A CN 109055763 A CN109055763 A CN 109055763A CN 201811155285 A CN201811155285 A CN 201811155285A CN 109055763 A CN109055763 A CN 109055763A
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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
- C22B7/007—Wet processes by acid leaching
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
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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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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/18—Electrolytes
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Abstract
The method that the present invention discloses elemental lithium selectivity salt Ore Leaching in a kind of aluminium electrolyte is related to aluminium electrolyte and extracts recovery technology field.It is the following steps are included: crush and sieve the aluminium electrolyte containing elemental lithium；Hydrochloric acid is mixed with water, and adjusts acid solution pH value less than 5.5；Aluminium electrolyte is added in acid solution, stirs and heats and leached, reaction temperature is 20-95 DEG C, and aluminium electrolyte additional amount is according to fluorinion concentration and controlling pH, and acidity is pH value less than 5.5, and fluorinion concentration is greater than 0.2g/L；After reaction, mixed liquor is filtered, washed, obtain filtrate and filtrate；For filtrate for extracting elemental lithium, filtrate is washed, dry, returns to electrolytic aluminium factory and produces electrolyte, and/or, it returns in leaching process.Selectively leaching lithium salts of the present invention recycles high added value lithium salts, while obtaining the higher industrial electrolysis matter suitable for aluminium electrolyte production of purity, and the energy consumption and extraction cost of Aluminum Electrolysis Production are low.
Description
Technical field
The present invention relates to aluminium electrolytes to extract recovery technology field, is related to a kind of using hydrochloric acid Selectively leaching aluminium electrolyte
The method of middle elemental lithium.
Background technique
The rapid development of China's Aluminium Industry sharply increases the demand of bauxite resource.China's high-grade alumina
Mine has faced exhaustion, and only a large amount of middle-low bauxite is produced utilization, production metallurgy grade aluminum oxide.Low product in this
Containing in a large amount of alkali metal element, the especially bauxite of China's bauxite major production areas in the bauxite of position, lithium salt content compared with
It is high.The aluminium oxide for largely containing lithium salts is used for Aluminum Electrolysis Production as raw material, and the electrolyte ingredient in aluminium cell is caused to occur
Variation, lithium salts are largely enriched in the electrolyte, are reduced electrolyte primary crystal temperature and alumina dissolution degree, are caused under aluminium electrolytic temperature
Drop, bearth precipitation increase, and current efficiency decline, ton aluminium energy consumption increases, directly affects the economic benefit of China's aluminium electrolytic industry, be
China's aluminium electrolytic industry urgent problem to be solved.Therefore the elemental lithium in removal aluminium electrolyte, to the hair of China's aluminium electrolytic industry
Exhibition is of great significance.Simultaneously, the industrial application of lithium salts constantly extends, as lithium battery, aluminium lithium alloy, lithium bromide are empty
Tune, atomic energy industry, organic synthesis etc., the demand to lithium salts are grown rapidly, and lithium resource also faces the challenge.If aluminium electricity can will be contained
Matter is solved as lithium salts resource, lithium salts therein is extracted, is also of great significance to China's lithium salts industrial expansion.
Currently, can make to leach the lithium salts in aluminium electrolyte using sulfuric acid solution, but this leaching mode can not only soak
Lithium salts out, and all components in aluminium electrolyte can all be come out, in this way, acid consumption is not only increased, Er Qiehou
Continuous lithium salts separates difficulty with other components, causes increasing considerably for production cost.
In conclusion need to propose one kind can Selectively leaching lithium salts, recycle high added value lithium salts, while obtaining purity
The higher industrial electrolysis matter suitable for aluminium electrolyte production, reduces the energy consumption of Aluminum Electrolysis Production, reduces comprehensive averagely extraction expense
Aluminium electrolyte in elemental lithium selectivity salt Ore Leaching method.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problem of the prior art, the present invention provides elemental lithium selectivity salt acidleach in a kind of aluminium electrolyte
Method out, this method can effectively extract the elemental lithium in electrolyte, recycle high added value lithium salts, while it is higher to obtain purity
Suitable for the industrial electrolysis matter of aluminium electrolyte production, the energy consumption and extraction cost of Aluminum Electrolysis Production are reduced.
(2) technical solution
In order to achieve the above object, the invention adopts the following technical scheme:
The present invention provides a kind of method of elemental lithium selectivity salt Ore Leaching in aluminium electrolyte, comprising the following steps:
S1, the aluminium electrolyte containing elemental lithium is crushed and is sieved；
S2, hydrochloric acid is mixed with water, and adjusts the pH value of acid solution less than 5.5；
S3, by step S1, treated that aluminium electrolyte is added in the acid solution that step S2 is obtained, and stirs and heats progress
It leaches, in leaching process, reaction temperature is 20-95 DEG C, and the additional amount of aluminium electrolyte is according to fluorinion concentration and acid in solution
Spend comprehensively control, wherein acidity is pH value less than 5.5, and fluorinion concentration is greater than 0.2g/L；
S4, after reaction, the mixed liquor after reaction is filtered, is washed, first-time filtrate and primary after being reacted
Filtrate；
For extracting elemental lithium, a filtrate is washed, dry for S5, first-time filtrate, returns to electrolytic aluminium factory for aluminium electricity
Matter production is solved, and/or, it returns in leaching process.
According to the present invention, in step sl, it after the aluminium electrolyte crushes, crosses 80-200 mesh and is sieved.
According to the present invention, before step S1, the aluminium electrolyte is that it is mixed with additive, and what is obtained after roasting changes
Become lithium salts object mutually into the aluminium electrolyte of soluble lithium salt.
According to the present invention, in step s 2, the water uses distilled water.
According to the present invention, in step s3, pH value should be less than 5 at the end of reaction, and fluorinion concentration should be greater than 0.3g/L；Root
Different, appropriate supplement addition hydrochloric acid is formed according to material.
According to the present invention, in step s3, the reaction temperature of mixed liquor is adjusted at 50-85 DEG C.
According to the present invention, in step s3, the fluorinion concentration is 0.5-5g/L.
According to the present invention, in step s3, using the pH value of acidometer control mixed liquor, electricity is selected using fluorinion concentration
The fluorinion concentration of pole control mixed liquor.PH value is 5.5, in addition to using hydrochloric acid, can also substitute reality using strong acid weak base salt
It is existing, such as use AlCl3, CaCl2Deng realization.
(3) beneficial effect
The beneficial effects of the present invention are:
Different from the existing method for all being leached all components in aluminium electrolyte using sulfuric acid solution, the present invention passes through control
The pH value and fluorinion concentration of relieving haperacidity solution, only by the Li in aluminium electrolyte2O, LiF and Li3AlF6Equal lithium salts leach, without making
Other ingredients in aluminium electrolyte are dissolved out or leach seldom, the separation of lithium salts and bulk of the electrolyte are realized, to effectively mention
The elemental lithium in aluminium electrolyte is taken, the recycling of lithium salts in aluminium electrolyte is made to be provided with the possibility of reality, it is viable economically, it realizes
High added value lithium salts is recycled, while the higher industrial electrolysis matter suitable for Aluminum Electrolysis Production of purity can be obtained, substantially reduces electrolysis
The energy consumption of aluminium production and comprehensive averagely extraction expense, are suitble to carry out application in the industrial production.
Raw material used in the present invention is the common raw material of chemical field, and cheap, process of the invention is simple, is passed through
The fluorinion concentration and pH value for controlling leaching process solution, Selectively leaching may be implemented, and (dissolution rate that lithium salts converts into LiF exists
68-98%, electrolyte dissolution rate reduces production cost lower than 20%), and may separate out many kinds of substance, obtained material purity compared with
It is high.
The present invention is based on the purposes for extracting elemental lithium in aluminium electrolyte, successfully develop and are mentioned using hydrochloric acid Selectively leaching
The method for taking elemental lithium in aluminium electrolyte solves the problems, such as elemental lithium influence for aluminium electroloysis industry, also increases benefit, improve
The level of aggregation of China's aluminium electrolytic industry, while expanding China's lithium salts resource provision.
Specific embodiment
In order to preferably explain the present invention, in order to understand, With reference to embodiment, present invention work is retouched in detail
It states.
The present invention provides a kind of method of elemental lithium selectivity salt Ore Leaching in aluminium electrolyte, comprising the following steps:
S1, the aluminium electrolyte containing elemental lithium is crushed, crosses 80-200 mesh and sieved, minus mesh is gone to carry out acidleach.
The aluminium electrolyte of selection can be directly from the aluminium electrolyte in electrolytic aluminium factory electrolytic cell, be also possible to from electricity
Aluminium electrolyte raw material in solution aluminium manufacturer's electrolytic cell is mixed with additive, and is handled through high-temperature roasting, make in aluminium electrolyte can not
Dissolubility lithium salts is fully converted to the aluminium electrolyte obtained after soluble lithium salt, i.e. change aluminium lithium salts object is mutually soluble lithium salt
Make the transition electrolyte.
Above-mentioned additive selects alkali metal oxide in addition to lithium, can be converted to alkali metal under the conditions of high-temperature roasting
One of the alkali metal oxysalt in addition to lithium of oxide, alkali halide in addition to lithium are a variety of, according to adding
Add that the type of agent, the different of lithium salt content carry out mixings in the molecular proportion of aluminium electrolyte and aluminium electrolyte, and meets following item
Part: guarantee the alkali metal fluoride, addition that the aluminium electrolyte alkali metal fluoride, the additive that contain directly add in mixed material
The alkali metal fluoride three and aluminum fluoride that agent can be converted under the conditions of high-temperature roasting molar ratio (that is, (LiF+NaF+KF)/
AlF3> 3) it is greater than 3.By mixed material compacting or briquetting, 3-5h is roasted at 300-1200 DEG C, in roasting process in aluminium electrolyte
Insolubility lithium salts is converted to soluble lithium salt.
Wherein, the mixture of one of sodium oxide molybdena, potassium oxide or both may be selected in the alkali metal oxide in addition to lithium.
The mixture of one of sodium oxide molybdena, potassium oxide or both may be selected in alkali metal oxide in addition to lithium.Alkali in addition to lithium
Metal halide can choose NaF, NaCl, NaBr, KF, KCl, one of KBr or a variety of.
S2, technical hydrochloric acid is mixed with water, and adjusts the pH value of acid solution less than 5.5.
Water can preferred distilled water, new impurity element can be reduced and be introduced into solution, thus the leaching to elemental lithium
It has an impact.
S3, by step S1, treated that aluminium electrolyte is added in the acid solution that step S2 is obtained, what is stirred and heat
Under the conditions of leached.Because there is very big fluctuation, mainly LiF content (3-10%) and in electrolyte in electrolyte ingredient
The additive being added when transition is also different, and therefore, the additional amount of aluminium electrolyte is comprehensive according to fluorinion concentration in solution and acidity
Control, wherein it is pH value less than 5.5 that leaching process, which controls electrolyte acidity, and fluorinion concentration is greater than 0.2g/L, preferably 0.5-
5g/L.The reaction temperature for controlling mixed liquor controls between 30-95 DEG C, and preferably 50-85 DEG C.
In leaching process, using magnetic stirrer mixed liquor, mixing speed is unlimited, as long as can make aluminium electrolyte
It is uniformly mixed with acid solution, to promote the elemental lithium in aluminium electrolyte to dissolve out.The pH value of mixed liquor is controlled using acidometer,
Using the fluorinion concentration of fluorinion concentration selection electrode control mixed liquor.PH value should be less than 5.5 at the end of reaction, and fluorine ion is dense
Degree should be greater than 0.2g/L.Different, the suitable salt hydrochloric acid of appropriate supplement addition is formed according to material.
Mixed liquor after reaction is filtered, repeatedly (at least two or three times) washs, reacted by S4, after reaction
First-time filtrate and a filtrate afterwards.
Filtering can will be dissolved with a large amount of lithium salts, the acid solution of minimal amount of aluminium electrolyte ingredient and aluminium electrolyte other compositions
The sediment of composition separates.Two or three times using distilled water repeated washing, it can extract the lithium salts of recycling high added value, while obtaining pure
Spend high aluminium electrolyte.
For extracting elemental lithium, a filtrate is washed, dry for S5, first-time filtrate, returns to electrolytic aluminium factory for aluminium electricity
Matter production is solved, and/or, it returns in leaching process.
Filtrate can return to electrolytic aluminium factory as raw material after distillation water washing, drying and produce aluminium electrolyte,
The leaching process that hydrochloric acid solution leaches elemental lithium can be returned, is repeatedly recycled, to improve the rate of recovery of elemental lithium.
Different from the existing method for all being leached all components in aluminium electrolyte using sulfuric acid solution, the present invention passes through control
Relieving haperacidity solution ph and fluorinion concentration, only by the Li in aluminium electrolyte2O, LiF and Li3AlF6Equal lithium salts leach, without making aluminium
Other ingredients in electrolyte are dissolved out or leach seldom, the separation of lithium salts and bulk of the electrolyte are realized, to effectively extract
Elemental lithium in aluminium electrolyte makes the recycling of lithium salts in aluminium electrolyte be provided with the possibility of reality, viable economically, realizes back
High added value lithium salts is received, while the higher industrial electrolysis matter suitable for Aluminum Electrolysis Production of purity can be obtained, substantially reduces electrolytic aluminium
The energy consumption of production and comprehensive averagely extraction expense, are suitble to carry out application in the industrial production.
Raw material used in the present invention is the common raw material of chemical field, and cheap, process of the invention is simple, is passed through
The fluorinion concentration and pH value for controlling leaching process solution, Selectively leaching may be implemented, and (dissolution rate that lithium salts converts into LiF exists
68-98%, electrolyte dissolution rate reduces production cost lower than 20%), and may separate out many kinds of substance, obtained material purity compared with
It is high.
The present invention is based on the purposes for extracting elemental lithium in aluminium electrolyte, successfully develop and are mentioned using hydrochloric acid Selectively leaching
The method for taking elemental lithium in aluminium electrolyte solves the problems, such as elemental lithium influence for aluminium electroloysis industry, also increases benefit, improve
The level of aggregation of China's aluminium electrolytic industry, while expanding China's lithium salts resource provision.
Following exemplary embodiments are to extract aluminium electrolyte sample respectively from certain electrolytic aluminium factory 300kA electrolytic cells, 400kA
For electrolytic cell and 200kA electrolytic cell.Directly broken, the levigate analysis of sample, the element composition and content molecular proportion of electrolyte,
Alumina concentration is fluorinated calcium concentration, is fluorinated lithium concentration etc. to indicate.Each embodiment is specific as follows:
Embodiment 1
50g aluminium electrolyte (content of LiF is 5% in electrolyte) is taken, broken, levigate, 80-200 mesh screening excessively is passed through
After obtain aluminium electrolyte powder, configure 150ml acid solution with hydrochloric acid and distilled water, the pH value of acid solution is 5, by aluminium electrolyte powder
End is put into above-mentioned acid solution, is heated to 90 DEG C, is stirred with magnetic stirring apparatus, controls solution ph and fluorine ion is dense
Degree, when solution ph is 4, and fluorinion concentration is 0.8g/L, leaching terminates.Mixed liquor after reaction is filtered, is washed,
First-time filtrate and a filtrate after being reacted.
It is 90% that through analysis detection, in electrolyte, lithium salts, which converts into the dissolution rate of LiF, and electrolyte dissolution rate is 15%.
Embodiment 2
500g aluminium electrolyte (content of LiF is 4% in electrolyte) is taken, broken, levigate, 80-200 mesh screening excessively is passed through
After obtain aluminium electrolyte powder, configure 1.2L acid solution with hydrochloric acid and distilled water, the pH value of acid solution is 1, by aluminium electrolyte powder
End is put into above-mentioned acid solution, is heated to 90 DEG C, is stirred with magnetic stirring apparatus, controls solution ph and fluorine ion is dense
Degree, when solution ph is 3, and fluorinion concentration is 0.35g/L, leaching terminates.Mixed liquor after reaction is filtered, is washed
It washs, first-time filtrate and a filtrate after being reacted.
It is 78% that through analysis detection, in electrolyte, lithium salts, which converts into the dissolution rate of LiF, and electrolyte dissolution rate is 12%.
Embodiment 3
10kg aluminium electrolyte (content of LiF is 7% in electrolyte) is taken, broken, levigate, 80-200 mesh screening excessively is passed through
After obtain aluminium electrolyte powder, configure 100L acid solution with hydrochloric acid and distilled water, the pH value of acid solution is 2, by aluminium electrolyte powder
End is put into above-mentioned acid solution, is heated to 60 DEG C, is stirred with magnetic stirring apparatus, controls solution ph and fluorine ion is dense
Degree, when solution ph is 4, and fluorinion concentration is 3g/L, leaching terminates.Mixed liquor after reaction is filtered, is washed, is obtained
First-time filtrate and a filtrate after to reaction.
It is 80% that through analysis detection, in electrolyte, lithium salts, which converts into the dissolution rate of LiF, and electrolyte dissolution rate is 15%.
Embodiment 4
150kg aluminium electrolyte (content of LiF is 5% in electrolyte) is taken, is sieved by broken, levigate, 80-200 mesh excessively
Aluminium electrolyte powder is obtained after point, configures 1000L acid solution with hydrochloric acid and distilled water, the pH value of acid solution is 1, by aluminium electrolyte
Powder is put into above-mentioned acid solution, is heated to 30 DEG C, is stirred with magnetic stirring apparatus, and solution ph and fluorine ion are controlled
Concentration, when solution ph is 4, and fluorinion concentration is 5g/L, leaching terminates.Mixed liquor after reaction is filtered, is washed,
First-time filtrate and a filtrate after being reacted.
It is 75% that through analysis detection, in electrolyte, lithium salts, which converts into the dissolution rate of LiF, and electrolyte dissolution rate is 13%.
Embodiment 5
200g aluminium electrolyte (content of LiF is 4% in electrolyte) is taken, broken, levigate, 80-200 mesh screening excessively is passed through
After obtain aluminium electrolyte powder, configure 700ml acid solution with hydrochloric acid and distilled water, the pH value of acid solution is 1.5, by aluminium electrolyte
Powder is put into above-mentioned acid solution, is heated to 75 DEG C, is stirred with magnetic stirring apparatus, and solution ph and fluorine ion are controlled
Concentration, when solution ph is 4.5, and fluorinion concentration is 0.5g/L, leaching terminates.Mixed liquor after reaction is filtered,
Washing, first-time filtrate and a filtrate after being reacted.
It is 85% that through analysis detection, in electrolyte, lithium salts, which converts into the dissolution rate of LiF, and electrolyte dissolution rate is 10%.
Embodiment 6
3kg aluminium electrolyte (content of LiF is 8% in electrolyte) is taken, broken, levigate, 80-200 mesh screening excessively is passed through
After obtain aluminium electrolyte powder, use AlCl330L acid solution is configured with distilled water, the pH value of acid solution is 5, by aluminium electrolyte
Powder is put into above-mentioned acid solution, is heated to 85 DEG C, is stirred with magnetic stirring apparatus, and solution ph and fluorine ion are controlled
Concentration, when solution ph is 3, and fluorinion concentration is 0.8g/L, leaching terminates.Mixed liquor after reaction is filtered, is washed
It washs, first-time filtrate and a filtrate after being reacted.
It is 88% that through analysis detection, in electrolyte, lithium salts, which converts into the dissolution rate of LiF, and electrolyte dissolution rate is 10%.
Embodiment 7
8kg aluminium electrolyte (content of LiF is 4% in electrolyte) is taken, broken, levigate, 80-200 mesh screening excessively is passed through
After obtain aluminium electrolyte powder, use CaCl28L acid solution is configured with distilled water, the pH value of acid solution is 5.5, by aluminium electrolyte powder
End is put into above-mentioned acid solution, is heated to 50 DEG C, is stirred with magnetic stirring apparatus, controls solution ph and fluorine ion is dense
Degree, when solution ph is 3.5, and fluorinion concentration is 1.5g/L, leaching terminates.Mixed liquor after reaction is filtered, is washed
It washs, first-time filtrate and a filtrate after being reacted.
It is 82% that through analysis detection, in electrolyte, lithium salts, which converts into the dissolution rate of LiF, and electrolyte dissolution rate is 14%.
Claims (8)
1. a kind of method of elemental lithium selectivity salt Ore Leaching in aluminium electrolyte, which comprises the following steps:
S1, the aluminium electrolyte containing elemental lithium is crushed and is sieved；
S2, hydrochloric acid is mixed with water, and adjusts the pH value of acid solution less than 5.5；
S3, by step S1, treated that aluminium electrolyte is added in the acid solution that step S2 is obtained, and stirs and heats and is leached,
In leaching process, reaction temperature is 20-95 DEG C, and the additional amount of aluminium electrolyte is comprehensive according to fluorinion concentration in solution and acidity
Control, wherein acidity is pH value less than 5.5, and fluorinion concentration is greater than 0.2g/L；
S4, after reaction, the mixed liquor after reaction is filtered, is washed, first-time filtrate and primary filtering after being reacted
Object；
For extracting elemental lithium, a filtrate is washed, dry, returns to electrolytic aluminium factory and is used for aluminium electrolyte for S5, first-time filtrate
Production, and/or, it returns in leaching process.
2. the method for elemental lithium selectivity salt Ore Leaching in aluminium electrolyte as described in claim 1, it is characterised in that: in step
In S1, after the aluminium electrolyte crushes, crosses 80-200 mesh and sieved.
3. the method for elemental lithium selectivity salt Ore Leaching in aluminium electrolyte as described in claim 1, it is characterised in that: in step
Before S1, the aluminium electrolyte is electrolytic bath, or the change lithium salts object for mixing with additive for it, and obtaining after roasting
It is mutually the aluminium electrolyte of soluble lithium salt.
4. the method for elemental lithium selectivity salt Ore Leaching in aluminium electrolyte as described in claim 1, it is characterised in that: in step
In S2, the water uses distilled water.
5. the method for elemental lithium selectivity salt Ore Leaching in the aluminium electrolyte as described in claim 1-4 is any, it is characterised in that:
In step s3, pH value should be less than 5.5 at the end of reaction, and fluorinion concentration should be greater than 0.3g/L；Difference is formed according to material, is fitted
When supplement adds hydrochloric acid.
6. the method for elemental lithium selectivity salt Ore Leaching in aluminium electrolyte as described in claim 1, it is characterised in that: in step
In S3, the reaction temperature of mixed liquor is adjusted at 50-85 DEG C.
7. the method for elemental lithium selectivity salt Ore Leaching in aluminium electrolyte as described in claim 1, it is characterised in that: in step
In S3, the fluorinion concentration is 0.5-5g/L.
8. the method for elemental lithium selectivity salt Ore Leaching in aluminium electrolyte as described in claim 1, it is characterised in that: in step
In S3, using the pH value of acidometer control mixed liquor, using the fluorinion concentration of fluorinion concentration selection electrode control mixed liquor.
PH value is 5.5, and in addition to using hydrochloric acid, realization can also be substituted using strong acid weak base salt, such as uses AlCl3, CaCl2Deng realization.
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| CN109930174A (en) * | 2019-03-01 | 2019-06-25 | 郑州经纬科技实业有限公司 | The method that aluminium electrolyte takes off lithium purification and recycling lithium |
| CN109930174B (en) * | 2019-03-01 | 2020-07-14 | 郑州经纬科技实业有限公司 | Method for lithium removal, purification and lithium recovery of aluminum electrolyte |
| CN110240182A (en) * | 2019-07-08 | 2019-09-17 | 中南大学 | The recycling processing method of rich lithium aluminium electrolyte |
| CN110240182B (en) * | 2019-07-08 | 2021-06-18 | 中南大学 | Resourceful treatment method of lithium-rich aluminum electrolyte |
| CN114410970A (en) * | 2022-01-21 | 2022-04-29 | 东北大学 | Leaching method of lithium element in aluminum electrolyte |
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Application publication date: 20181221 |