CN108034822A - A kind of method for removing copper ion in tri compound sulfate liquor - Google Patents
A kind of method for removing copper ion in tri compound sulfate liquor Download PDFInfo
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- CN108034822A CN108034822A CN201711276056.XA CN201711276056A CN108034822A CN 108034822 A CN108034822 A CN 108034822A CN 201711276056 A CN201711276056 A CN 201711276056A CN 108034822 A CN108034822 A CN 108034822A
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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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
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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
- C22B47/00—Obtaining manganese
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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Abstract
The present invention relates to fine inorganic chemicals technical field, more particularly to a kind of method for removing copper ion in tri compound sulfate liquor, comprise the following steps：(1) tri compound sulfate liquor is put into electrolytic cell, heated；(2) using carbon plate as anode, it is electrolysed by cathode of copper coin；(3) content of copper in detection solution is sampled in electrolytic process, stops being powered when the content of copper is less than 0.01ug/mL；(4) filter and wash the slag in positive plate and solution, merge cleaning solution and filtrate, obtain the tri compound sulfate liquor for removing copper ion；Wherein, the tri compound sulfate liquor is cobaltous sulfate, nickel sulfate, the mixed solution of manganese sulfate.
Description
Technical field
The present invention relates to copper in fine inorganic chemicals technical field, more particularly to a kind of removal tri compound sulfate liquor
The method of ion.
Background technology
With the fast development of new-energy automobile industry, the continuous rapid growth of power lithium battery usage amount, in recent years
The learies of lithium battery are also in rapid growth.Compared to portable electric appts such as mobile phone, notebooks, power lithium battery is scrapped
Measure huge.Containing valuable metals such as cobalt nickel manganese lithiums in lithium battery, while it is also poisonous metal, if by lithium battery directly as discarded
Thing is placed in environment, and soil environment and water environment will be caused seriously to pollute.
The regeneration of valuable metal in lithium battery, not only contributes to the development of lithium battery industry, and can mitigate ring
Border pollution problem.The recovery process of waste lithium cell mainly includes discharging, disassemble, crushing, sorting, alkali leaching, Ore Leaching, removes
Miscellaneous, extraction, back extraction, crystallization etc..Collector of the copper foil as cathode of lithium battery, is disassembling and part is had in crushing process
Copper enters powder, then, is entered by Ore Leaching process in solution.
At present, in tri compound sulfate liquor mainly there is the method for copper removal：Addition NaHS generation copper sulfide precipitation,
The methods of copper removal is extracted using N902 extractants.But they have the loss of cobalt, nickel, manganese, Er Qiecui during copper removal
It is complex to remove process for copper, copper removal effect is extremely difficult to 100%, therefore, tri compound sulfate liquor remove impurity copper from
The method of son needs further to be studied.
The content of the invention
The defects of in order to solve the prior art, the present invention provides one kind to remove copper ion in tri compound sulfate liquor
Method.
A kind of method for removing copper ion in tri compound sulfate liquor, comprises the following steps：
(1) tri compound sulfate liquor is put into electrolytic cell, heated；
(2) using carbon plate as anode, it is electrolysed by cathode of copper coin；
(3) content of copper in detection solution is sampled in electrolytic process, is stopped when the content of copper is less than 0.01ug/mL logical
Electricity；
(4) filter and wash the slag in positive plate and solution, merge cleaning solution and filtrate, up to the ternary of copper ion is removed
Sulfate composite salting liquid；
Wherein, the tri compound sulfate liquor is cobaltous sulfate, nickel sulfate, the mixed solution of manganese sulfate.
The foregoing method for removing copper ion in tri compound sulfate liquor, in step (1), the heating is by ternary
The temperature of sulfate composite salting liquid is heated to 20-100 DEG C.
The foregoing method for removing copper ion in tri compound sulfate liquor, it is described to be electrolysed in step (2)
When, it is 2-3V, electric current 1.0-1.5A, current density 30-100A/m to control voltage2。
The foregoing method for removing copper ion in tri compound sulfate liquor, the tri compound sulfate liquor it is dense
Spend for 150-200g/L.
The foregoing method for removing copper ion in tri compound sulfate liquor, before the step (1), further includes preparation
The step of tri compound sulfate liquor：
1) the waste lithium cell pole piece of certain mass is weighed, is crushed；
2) strong base solution is added, stirring to no gas generates, filtering；
3) the strong base solution mashing washing of filter residue low concentration, filtering；
4) filter residue is added in dilution heat of sulfuric acid, stirs lower addition hydrogen peroxide；
5) question response is complete, and filtering, obtains tri compound sulfate liquor.
The foregoing method for removing copper ion in tri compound sulfate liquor, the waste lithium cell pole piece is positive plate
And negative plate.
The foregoing method for removing copper ion in tri compound sulfate liquor, the highly basic are in NaOH, KOH, LiOH
One or more.
The foregoing method for removing copper ion in tri compound sulfate liquor, strong base solution concentration described in step 2) are
4-6mol/L, the concentration of strong base solution described in step 3) is 0.05-0.15mol/L.
The foregoing method for removing copper ion in tri compound sulfate liquor, the concentration of the dilute sulfuric acid is 1.5-
2.5mol/L。
The foregoing method for removing copper ion in tri compound sulfate liquor, the mass fraction of the hydrogen peroxide is 25-
30%.
Technical solution using the present invention has the following advantages that：
The present invention using the oxidation-reduction potential of metal ion difference, when being passed through direct current and being electrolysed, oxidisability
Stronger copper ion is reduced into elemental copper first on cathode and separates out, so as to be removed from solution.The principle of the invention is simple, removes
Only has the loss of a small amount of metallic cobalt, nickel, manganese during copper, when content of copper ion is relatively low, electrolysis time is shorter, cobalt, nickel, the gold of manganese
It is also relatively small to belong to loss.
Be additionally, since present invention utilizes electrochemical method, compared with common chemical method, the present invention without it is additional its
Its chemical reagent, has not only saved the energy, but also avoids pollution of the added regent to environment, and therefore, the present invention is more in line with
Green Chemistry idea.
Embodiment
In order to be fully understood by the purpose of the present invention, feature and effect, by following embodiments, the present invention is made detailed
Describe in detail bright.For the process of the present invention in addition to the description below, remaining uses the conventional method or device of this area.Following nouns
Term is unless otherwise stated, be respectively provided with the normally understood implication of those skilled in the art.
The present invention provides one kind to remove copper ion in tri compound sulfate (cobaltous sulfate, nickel sulfate, manganese sulfate) solution
Method.Using electrolysis principle, oxidation reaction occurs for anode during electrolysis, and reduction reaction occurs for cathode, using carbon plate as anode, with copper
Plate is electrolysed for cathode, and reduction reaction generation elemental copper occurs on cathode for copper ion, so that molten from tri compound sulfate
Removed in liquid.The present invention using various metal activities order (oxidation-reduction potential) difference, in electrolytic process oxidisability compared with
Strong copper ion is first separated out from cathode, and is removed from solution.
Specifically, the method for removing copper ion in tri compound sulfate liquor of the invention, includes the following steps：
(1) concentration is put into electrolytic cell for 150-200g/L tri compound sulfate liquors, is heated to 20-100 DEG C, its
Middle tri compound sulfate liquor is cobaltous sulfate, nickel sulfate, the mixed solution of manganese sulfate；
Wherein, temperature setting can be improved into reaction speed for 20-100 DEG C, shortens the reaction time.
(2) using carbon plate as anode, it is electrolysed by cathode of copper coin, it is 2-3V, electric current 1.0-1.5A to control voltage, is led to
The area of coordination electrode plate in the solution is crossed, it is 30-100A/m to control current density2；
Using HB404 D.C. voltmeters and HB404 Intelligent current tables, by exchange turn DC equipment tested needed for it is electric
Pressure and electric current.
(3) in electrolytic process, the content of copper in the solution of sampling detection at regular intervals, until the content of copper is less than
Stop being powered during 0.01ug/mL；
(4) filter and wash the slag in positive plate and solution, cleaning solution and filtrate are merged, up to removing the three of copper ion
First sulfate composite salting liquid.
The main component for removing the tri compound sulfate mixture of copper ion is NiSO4、CoSO4、MnSO4, and on a small quantity
Li2SO4、Na2SO4、CaSO4、MgSO4Deng.
Slag is collected, is washed, dry after weigh and analyze the quality of Ni, Co, Mn, and then calculate tri compound sulfate
The loss amount of Ni, Co, Mn in mixture.
Wherein, before step (1), the step of preparing tri compound sulfate liquor is further included, it is specific as follows：
1) the waste lithium cell pole piece of certain mass is weighed, is crushed using micromill；
Wherein, lithium battery pole slice includes positive plate and negative plate, and positive plate collector is aluminium foil, and negative plate collector is copper
Paper tinsel.
2) NaOH, KOH or LiOH solution of excessive 4-6mol/L is added, stirring to no gas generates, and filters；This step
Suddenly primarily to removing the aluminium in positive plate.The chemical reaction mainly occurred is：
2Al+2OH-+2H2O=2AlO2 -+3H2↑
3) filter residue is washed twice with NaOH, KOH or LiOH solution mashing of 0.05-0.15mol/L, is obtained by filtration without aluminium
Filter residue；
4) filter residue is added in the dilution heat of sulfuric acid of 1.5-2.5mol/L, it is 25-30% to stir lower addition mass fraction
Hydrogen peroxide；The chemical equation to react is：
2LiMO2+3H2SO4+H2O2=Li2SO4+2MSO4+4H2O+O2↑
M represents the mixture of Ni, Co, Mn.
5) question response is complete, and filtering discards filter residue, up to tri compound sulfate liquor.
After method using the present invention is electrolysed 4~8h, the content of copper ion can be from tri compound sulfate liquor
2200ug/mL is down to below 0.01ug/mL.
The principle of the invention is simple, can effectively remove the copper ion in tri compound sulfate liquor from solution,
Impurity copper, which is removed, for tri compound sulfate liquor provides a kind of new method.
The present invention is specifically described below by embodiment.It is necessarily pointed out that following embodiments are only used
In the invention will be further described, it is impossible to be interpreted as limiting the scope of the invention, professional and technical personnel in the field
Some the nonessential modifications and adaptations made according to the content of the invention described above, still fall within protection scope of the present invention.
Embodiment 1
Waste lithium cell positive plate 300g is weighed at random, negative plate 5g, after being crushed with micromill, is slowly added into and contains
In the beaker for having the NaOH solution of 1.5L 5.0mol/L, stirring, until there is no gas generation.Filtering, with 0.1mol/L's
NaOH solution presses solid-to-liquid ratio 1:3 mashing wash twice.Powder after washing is slowly added into the sulfuric acid containing 1.75L 2mol/L
The hydrogen peroxide that about 250mL mass fractions are 30% is slowly added in the beaker of solution, under stirring.After reacting 2h, body is obtained by filtration
Product is the tri compound sulfate liquor of 2L, and the concentration of wherein each component is NiSO after testing4：60.79g/L CoSO4：
63.24g/L MnSO4：64.38g/L Cu2+Content is 2181ug/mL.Water in electrolytic cell is heated to 95 DEG C or so, with carbon plate
For anode, be electrolysed by cathode of copper coin, control 2.7 ± 0.2V of voltage, 1.2 ± 0.1A of electric current, and by control solution with
The contact area of pole plate, makes current density control in 90A/m2Left and right.Copper contains in separately sampled survey solution when being electrolysed 2h, 5h and 8h
Amount is respectively 1295ug/mL, 149ug/mL and 0 (ICP is not detected).
After electrolysis, the slag in solution Anodic and solution is collected, wash, weighs and analyzes after drying, wherein, slag
In containing Ni, Co, Mn be respectively 2.62g, 0.88g, 5.13g, its loss amount is respectively 5.68%, 1.83%, 10.95%.
Below by taking nickel as an example, the computational methods of metal loss amount are as follows：
The volume of tri compound sulfate is 2L, and the concentration of nickel sulfate is 60.79g/L,
Then：mNiSO4=2L × 60.79g/L=121.58g
mNi=nNi×MNi=nNiSO4×MNi=(mNiSO4÷M NiSO4)×MNi
=(121.58g ÷ 154.69g/mol) × 58.69g/mol
=46.13g
The loss amount of nickel=(2.62 ÷ 46.13) × 100%=5.68%
In kind calculate the loss amount of Co, Mn.
Embodiment 2
Waste lithium cell positive plate 300g, negative plate 3g are weighed at random, after being crushed with micromill, is slowly added into Sheng
In the beaker for having the NaOH solution of 1.5L 5.0mol/L, stirring is lower until there is no gas generation.Filtering, and use 0.1mol/L
NaOH solution press solid-to-liquid ratio 1:3 mashing wash twice.Powder after washing, which is slowly added into, fills about 1.75L 2mol/L's
In the beaker of sulfuric acid solution, stirring, be slowly added to about 250mL mass fractions be 30% hydrogen peroxide, react 2h after, filter three
First sulfate composite salting liquid 2L, the concentration of wherein each component is NiSO after testing4：59.44g/L,CoSO4：43.76g/L,
MnSO4：70.61g/L wherein Cu2+Content is 1367ug/mL.Heating water bath is to 60 DEG C in electrolytic cell, using carbon plate as anode, with
Copper coin is electrolysed for cathode, controls 2.5 ± 0.2V of voltage, 1.3 ± 0.1A of electric current, and by controlling contact of the solution with pole plate
Area, it is 60A/m to make current density2Left and right.The separately sampled copper content surveyed in solution when being electrolysed 2h, 4h and 6h, is respectively
591ug/mL, 86ug/mL and 0.004ug/mL.After electrolysis, the slag in solution Anodic and solution is collected into washing drying
After weigh and analyze, containing Ni, Co, Mn be respectively 1.37g, 0.39g, 2.37g in slag, its loss amount is respectively 3.04%,
1.17%th, 4.61%.
Embodiment 3
Waste lithium cell positive plate 250g is weighed at random, negative plate 0.3g, after being crushed with micromill, is slowly added into
In the beaker for filling the NaOH solution of 1.5L 5.0mol/L, stirring, until there is no gas generation.0.1mol/L is used after filtering
NaOH solution press solid-to-liquid ratio 1:3 mashing wash twice.Powder after washing is slowly added into the sulphur for filling 1.8L 1.5mol/L
In the beaker of acid solution, stirring, is slowly added to the hydrogen peroxide that about 200mL mass fractions are 30%, after reacting 2h, filters to obtain ternary
Sulfate composite salting liquid 2L, the concentration of wherein each component is NiSO after testing4：78.35g/L,CoSO4：33.59g/L,MnSO4：
52.18g/L wherein Cu2+Content is 120ug/mL.Using carbon plate as anode in electrolytic cell, electricity is carried out at room temperature by cathode of copper coin
Solution, controls 2.0 ± 0.2V of voltage, 1.0 ± 0.1A of electric current, and by controlling the contact area of solution and pole plate, makes current density
Control is in 35A/m2Left and right.It is respectively 36ug/mL and 0 (ICP is not detected) to be electrolysed copper content in the separately sampled survey solution of 2h, 4h.
After electrolysis, weigh and analyze after the slag in solution Anodic and solution is collected washing drying, containing Ni, Co, Mn points in slag
Not Wei 1.56g, 0.23g, 1.53g, its loss amount is respectively 2.62%, 0.90%, 4.03%.
Embodiment 4
Waste lithium cell positive plate 250g, negative plate 3g are weighed at random, after being crushed with micromill, is slowly added into Sheng
In the beaker for having the NaOH solution of 1.5L 4.0mol/L, stirring, until there is no gas generation.With 0.15mol/L's after filtering
NaOH solution presses solid-to-liquid ratio 1:3 mashing wash twice.Powder after washing is slowly added into the sulfuric acid for filling 1.8L 1.5mol/L
In the beaker of solution, stirring, be slowly added to about 200mL mass fractions be 25% hydrogen peroxide, react 2h after, filter ternary is answered
Sulfate liquor 2L is closed, the concentration of wherein each component is NiSO after testing4：77.96g/L,CoSO4：34.65g/L,MnSO4：
49.99g/L wherein Cu2+Content is 1310ug/mL.Using carbon plate as anode in electrolytic cell, using copper coin as cathode electrolytic cell in water-bath
60 DEG C are heated to, controls 2.5 ± 0.2V of voltage, 1.3 ± 0.1A of electric current, and by controlling the contact area of solution and pole plate, make
Current density is controlled in 70A/m2Left and right.Electrolysis 2h, 4h, 6h it is separately sampled survey solution in copper content be respectively 459ug/mL,
23ug/mL and 0 (ICP is not detected).After electrolysis, weigh simultaneously after the slag in solution Anodic and solution is collected washing drying
Analysis, containing Ni, Co, Mn is respectively 1.49g, 0.46g, 1.21g in slag, its loss amount is respectively 2.51%, 1.74%,
3.32%.
Embodiment 5
Waste lithium cell positive plate 250g, negative plate 3g are weighed at random, after being crushed with micromill, is slowly added into Sheng
In the beaker for having the NaOH solution of 1.5L 6.0mol/L, stirring, until there is no gas generation.With 0.05mol/L's after filtering
NaOH solution presses solid-to-liquid ratio 1:3 mashing wash twice.Powder after washing is slowly added into the sulfuric acid for filling 1.8L 1.5mol/L
In the beaker of solution, stirring, be slowly added to about 200mL mass fractions be 30% hydrogen peroxide, react 2h after, filter ternary is answered
Sulfate liquor 2L is closed, the concentration of wherein each component is NiSO after testing4：76.94g/L,CoSO4：33.64g/L,MnSO4：
53.29g/L wherein Cu2+Content is 1261ug/mL.Using carbon plate as anode in electrolytic cell, electricity is carried out at room temperature by cathode of copper coin
Solution, controls 2.0 ± 0.2V of voltage, 1.0 ± 0.1A of electric current, and by controlling the contact area of solution and pole plate, makes current density
Control is in 45A/m2Left and right.It is respectively 713ug/mL, 156ug/ to be electrolysed copper content in the separately sampled survey solution of 2h, 4h, 6h, 8h
ML, 21ug/mL and 0.005ug/mL.After electrolysis, weigh after the slag in solution Anodic and solution is collected washing drying
And analyze, containing Ni, Co, Mn be respectively 1.38g, 0.22g, 1.35g in slag, its loss amount is respectively 2.43%, 0.86%,
3.48%.
The present invention is hereinbefore disclosed with preferred embodiment, but it should be understood by those skilled in the art that, these
Embodiment is only used for describing the present invention, and should not be construed as limiting the scope of the invention.It should be noted that every implement with these
Example equivalent change and displacement, should all be set to be covered by scope of the presently claimed invention.Therefore, protection scope of the present invention
The scope that should be subject to defined in claims.
Claims (10)
- A kind of 1. method for removing copper ion in tri compound sulfate liquor, it is characterised in that comprise the following steps：(1) tri compound sulfate liquor is put into electrolytic cell, heated；(2) using carbon plate as anode, it is electrolysed by cathode of copper coin；(3) content of copper in detection solution is sampled in electrolytic process, stops being powered when the content of copper is less than 0.01ug/mL；(4) filter and wash the slag in positive plate and solution, merge cleaning solution and filtrate, up to the tri compound of copper ion is removed Sulfate liquor；Wherein, the tri compound sulfate liquor is cobaltous sulfate, nickel sulfate, the mixed solution of manganese sulfate.
- 2. the method according to claim 1 for removing copper ion in tri compound sulfate liquor, it is characterised in that step (1) in, the heating is that the temperature of tri compound sulfate liquor is heated to 20-100 DEG C.
- 3. the method according to claim 1 or 2 for removing copper ion in tri compound sulfate liquor, it is characterised in that Described when being electrolysed in step (2), it is 2-3V, electric current 1.0-1.5A, current density 30-100A/ to control voltage m2。
- 4. the method for copper ion in tri compound sulfate liquor, its feature are removed according to claim 1-3 any one of them It is, the concentration of the tri compound sulfate liquor is 150-200g/L.
- 5. the method for copper ion in tri compound sulfate liquor, its feature are removed according to claim 1-4 any one of them It is, before the step (1), further includes the step of preparing tri compound sulfate liquor：1) the waste lithium cell pole piece of certain mass is weighed, is crushed；2) strong base solution is added, stirring to no gas generates, filtering；3) the strong base solution mashing washing of filter residue low concentration, filtering；4) filter residue is added in dilution heat of sulfuric acid, stirs lower addition hydrogen peroxide；5) question response is complete, and filtering, obtains tri compound sulfate liquor.
- 6. the method according to claim 5 for removing copper ion in tri compound sulfate liquor, it is characterised in that described Waste lithium cell pole piece is positive plate and negative plate.
- 7. the method for removing copper ion in tri compound sulfate liquor according to claim 5 or 6, it is characterised in that The highly basic is the one or more in NaOH, KOH, LiOH.
- 8. the method for copper ion in tri compound sulfate liquor, its feature are removed according to claim 5-7 any one of them It is, strong base solution concentration described in step 2) is 4-6mol/L, and the concentration of strong base solution described in step 3) is 0.05- 0.15mol/L。
- 9. the method for copper ion in tri compound sulfate liquor, its feature are removed according to claim 5-8 any one of them It is, the concentration of the dilute sulfuric acid is 1.5-2.5mol/L.
- 10. the method for copper ion in tri compound sulfate liquor, its feature are removed according to claim 5-9 any one of them It is, the mass fraction of the hydrogen peroxide is 25-30%.
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| CN112758958A (en) * | 2020-12-21 | 2021-05-07 | 贵州红星电子材料有限公司 | Method for removing chloride ions in sodium sulfate solution |
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| CN104017989A (en) * | 2014-06-16 | 2014-09-03 | 天津市茂联科技有限公司 | High ferroalloy treatment process |
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| CN107429313A (en) * | 2015-03-31 | 2017-12-01 | 捷客斯金属株式会社 | The method of copper and the method for recovery metal are removed from lithium ion battery waste material |
| CN107117661A (en) * | 2017-05-26 | 2017-09-01 | 金川集团股份有限公司 | The method that nickel cobalt manganese prepares ternary hydroxide in the waste and old lithium ion battery reclaimed using liquid phase method |
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| CN112758958A (en) * | 2020-12-21 | 2021-05-07 | 贵州红星电子材料有限公司 | Method for removing chloride ions in sodium sulfate solution |
| CN112758958B (en) * | 2020-12-21 | 2023-03-07 | 贵州红星电子材料有限公司 | Method for removing chloride ions in sodium sulfate solution |
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