CN105603454A - Method for environmentally-friendly and efficient production of electrolytic metal manganese and electrolytic additive - Google Patents
Method for environmentally-friendly and efficient production of electrolytic metal manganese and electrolytic additive Download PDFInfo
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- CN105603454A CN105603454A CN201610049514.5A CN201610049514A CN105603454A CN 105603454 A CN105603454 A CN 105603454A CN 201610049514 A CN201610049514 A CN 201610049514A CN 105603454 A CN105603454 A CN 105603454A
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- 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
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
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Abstract
This invention belongs to the technical field of chemical production and provides a method for environmentally-friendly and efficient production of electrolytic metal manganese and an electrolytic additive. A poly N-vinyl imidazole and N-vinyl imidazole-acrylic copolymer is used as an electrolysis additive and is added to the electrolyte containing manganese sulfate and ammonium sulfate for electrolytic manganese production when being used, and the content of the electrolysis additive in the electrolyte is controlled to be 1 to 40 mg/L. The electrolysis additive is an environmentally-friendly non-toxic polymer, can be used for replacing currently and widely used toxic or pollution-carrying selenium dioxide and sulfur dioxide, is very small in solubility, does not accumulate in the electrolyte and is simple to operate in the production process, the metal manganese electrolysis efficiency is high, the product purity is high, the electrolytic process is stable, the purity requirement for the electrolyte is lower, the difficulty and the cost of electrolytic metal manganese production are reduced, and the electrolytic metal manganese has higher promotion and application value.
Description
Technical field
The invention belongs to chemical production technical field, relate in particular to a kind of environment-friendly high-efficiency produce electrolytic manganese metal method andElectrolysis additive.
Background technology
Manganese metal purposes is very extensive, now success and apply to widely smelting iron and steel, nonferrous metallurgy, electronic technology,The every field such as chemical industry, environmental protection, food hygiene, welding rod industry, aerospace industry, China has been at present that the whole world is maximumElectrolytic manganese production state, country of consumption.
Nineteen twenty-three Britain A.J.AllMand and the method for ceramic diaphragm electrolysis for A.N.Cambell, electrolysis goes out metalManganese. Because the reduction potential of manganese ion is less than hydrogen ion, in the aqueous solution, can not reduce and obtain manganese metal in theory, suitable in interpolationWhen additive after, can change electrode surface state, increase the overvoltage separated out of hydrogen ion on electrode, make manganese ion reductionCompared with hydrogen ion reduction easily, just can obtain electrolytic manganese product. Just find the additive that is applicable to electrolytic manganese to 1940 mid-nineties 90s,Electrolytic manganese just really steps into industrial production like this. Current electrolysis manganese additive is mainly SeO2And SO2, and taking them as master'sCompound additive. Requirement for market to product quality and Environmental Factors, part electrolytic manganese factory adopts SO both at home and abroad2Or withIt is that main compound additive is produced electrolytic manganese, and the most of electrolytic manganese factories of China generally adopt SeO2. Adopt SeO2(electric current effectRate 66-70%) during as additive, its current efficiency is than SO2Want high, but in product electrolytic manganese, contain Se element, content is high(0.03～0.04%), manganese purity relatively low (～99.7%), the product of production is plain edition electrolytic manganese; Producer also both at home and abroadThere is use SO2As additive, although current efficiency is only 55-60%, electrolytic manganese product purity higher (99.9%),The product obtaining is without selenium electrolytic manganese, and the market price is also higher.
Above-mentioned two kinds of additives use extensively in electrolytic manganese industry, but both all have obvious shortcoming. For SeO2, itBe a kind of violent in toxicity, plant operator is used will note self-protection, joins in electrolyte and exists with selenite form, quiltAfter oxidation, become selenate, soak ore deposit process at anolyte for circulation and remain in tailings, with the tailings entered environment abandoningIn, contaminated land and underground water; Contain the electrolytic manganese product of selenium in use, selenium can proceed in the product or high temperature process rolling off the production lineEvaporate in atmosphere, contaminated environment, is therefore restricted containing application and the outlet of Se electrolytic manganese metal.
Adopt SO2Shortcoming be under electrolysis temperature (> 40 DEG C) SO2Easily from electrolyte, overflow and volatilize, cause production lineSO in environment2Concentration is high, workman's production operation inclement condition, and electrolytic process is higher to the requirement of electrolyte purity, electrolytic processIn also easily there is not upper plate, the various abnormal conditions such as molten plate, technical process not as good as use SeO2Stable easily control, and electric currentEfficiency is than using SeO2Low, production cost is high. In addition, use SO2For additive, require the concentration of ammonium sulfate in electrolyte to wantMore than reaching 130g/L, this causes ammonium sulfate crystallization very easily at slightly low temperature, stops up electrolyte membrane, make electrolysis withoutMethod is carried out smoothly. Some Domestic producer also attempts using SO2, but consider from production practices and production marketing, use oneAfter the section time, change back again and use SeO2。
Chinese scholars is being done a lot of work aspect the research of electrolytic manganese additive, Goddard SO2-selenides-water-solubleProperty polyacrylamide is compound additive, and sedimentation manganese is abundant, bright, without dendrite, can maintain for a long time high current efficiency.Petru etc. are with H2TeO3And Zn2+Make additive, find micro-Zn2+Be conducive to improve current efficiency and reduce power consumption, butH2TeO3This product yield rareness, cost ratio SeO2More high, do not there is actual application value. It is right that the grade that Lee closes has been inventedThe compound additive of benzenediol, formaldehyde, thiocarbamide, formic acid, reductase and selenium dioxide combination, with single SeO2Compare, reduceThe use amount of selenium dioxide, therefore can reduce production costs.
Yang Chao, Tian Xike etc. use acetate and phosphate for principal component (CN101717958A), have prepared a kind of nothingSelenium electrolysis additive, nontoxic pollution-free, can steadily produce electrolytic manganese, current efficiency 70%, but the phosphate in additive withElectrolyte reaction produces a large amount of cotton-shaped manganese phosphate precipitations, can stick on newly-generated manganese layer in electrolytic process, constantly adhere to-Manganese deposition may cause in product manganese phosphorus content high, and phosphorus content is one of index of electrolytic manganese product requirement, simultaneously these waddingsShape precipitation can affect even stops up electrolyte membrane, and electrolysis cannot be carried out. They also use animal glue, polyethylene glycol, and boric acid,Polyacrylamide is raw material, prepared a kind of without selenium electrolytic manganese additive (CN101260538B), current efficiency 70% left and right,But use animal glue, polyethylene glycol, three kinds of water soluble polymers of polyacrylamide, need to use separately hot water (best 60 DEG C)On) dissolve, dissolution velocity is slower, makes factory's practical operation comparatively loaded down with trivial details. Animal glue in addition, these two kinds of polyethylene glycol are water-solubleMacromolecular compound can not flocculating setting in electrolyte electrolysis-soak ore deposit cyclic process, and therefore must consider can after each interpolationCan cause the continuous accumulation of high polymer, the accumulation of high polymer can make electrolyte viscosity constantly rise, meeting after acquiring a certain degreeAffect the electrolytic deposition of manganese, occur flaking, degradation problem under current efficiency, also can affect the manganese leaching effect of soaking in the process of ore deposit simultaneouslyThe easy filterability of rate and ore pulp.
Liu Shaoyou etc. use benzene sulfonic acid sodium salt as additive (number of patent application 201110417621.6, publication No., or benzene sulfonic acid sodium salt and SeO CN102492958A)2Or SO2Mixing and use, embodiment shows to be 200 in current density～300A/m2, its current efficiency is in 70% left and right. Experiment confirm in current density is brought up to industrial production, adopt 330～400A/m2Time, minus plate edge generates a large amount of dendrite, follows the decline of current efficiency simultaneously, and therefore this additive is applicable to lowUnder current density, use, this makes single groove production declining, and therefore ton production cost also increases. In addition, in electrolytic process, send outThe obviously phenomenon of blackout of existing cathodic region tank liquor, brings cathodic region deposit to increase, the problem that the clear groove cycle shortens.
It is high that desirable additive will meet current efficiency, and environment-protecting asepsis is easy to use, and electrolytic process is stable, in addition, makeObtain electrolysis and normally carry out, different additives is different for the purity requirement of electrolyte, and desirable additive is preferably to electricityThe purity requirement of separating liquid is not too high, otherwise can increase difficulty and the cost of Zhi Ye workshop section. In fact, meet above-mentioned institute completelyHave requirement very difficult, current various additives have pluses and minuses separately, fail at present large-scale application in suitability for industrialized production.Up to the present, the industry of China's electrolytic manganese is still mainly used SeO2For additive. Due to SeO2Extremely toxic substance, to environment dirtDye seriously, and price is extremely expensive, main dependence from Europe and Japanese import. And use SO2For additive, also exist and produceInclement condition, the problem such as diaphragm for electrolytic cell easily stops up, and current efficiency is lower, additive that neither be very desirable.
For complying with the production development needs of China's energy-conserving and environment-protective, national environmental protection department has specified that the electrolytic manganese whole industry should be progressivelyRealize without selenium electrolysis, and to having provided guiding suggestion without the power consumption of selenium electrolytic process. For these reasons, must research ringProtect free of contamination alternative SeO2And SO2Additive, ensureing under the prerequisite of asepsis environment-protecting the novel nothing of exploitation highly effectiveSelenium electrolytic manganese additive is related to the sustainable development of the industry.
Summary of the invention
For addressing the above problem, the method and the electrolysis that the invention provides a kind of environment-friendly high-efficiency production electrolytic manganese metal are addedAgent, the environmental pollution that the additive that the various production electrolytic manganese metals that the invention solves prior art provides use exists is tightHeavy, electrolytic process is unstable, use is inconvenient, electrolytic efficiency is lower, to problems such as the purity requirement of electrolyte are higher, reached ringProtect nontoxic requirement, and reduced difficulty and cost that electrolytic manganese metal is produced.
For achieving the above object, technical scheme of the present invention is:
Environment-friendly high-efficiency is produced an electrolysis additive for electrolytic manganese metal, and described electrolysis additive comprises poly N-vinyl miaowAzoles (PNVI) and/or N-vinyl imidazole-acrylic copolymer (PNVI-PA);
The chemical formula of poly N-vinyl imidazoles is:
Wherein, a=20～700;
The chemical formula of N-vinyl imidazole-acrylic copolymer is:
Wherein, n=15～600, m=20～800.
Further improve, the molecular weight of described poly N-vinyl imidazoles is 2000～67000; N-vinyl imidazole-the thirdThe molecular weight of olefin(e) acid copolymer is 3000～115000.
Further improve, described electrolysis additive comprise poly N-vinyl imidazoles and N-vinyl imidazole-acrylic acid commonPolymers; The mass ratio of poly N-vinyl imidazoles and N-vinyl imidazole-acrylic copolymer is 1:1.
Further improve, in the process of producing electrolytic manganese metal, use electrolysis additive, described electrolysis additive bagDraw together poly N-vinyl imidazoles and/or N-vinyl imidazole-acrylic copolymer;
The chemical formula of poly N-vinyl imidazoles is:
Wherein, a=20～700;
The chemical formula of N-vinyl imidazole-acrylic copolymer is:
Wherein, n=15～600, m=20～800.
Further improve, the molecular weight of described poly N-vinyl imidazoles is 2000～67000.
Further improve, the molecular weight of described N-vinyl imidazole-acrylic copolymer is 3000～115000.
Further improve, in electrolytic manganese metal is produced, the concentration of described electrolysis additive in electrolyte is 1-40mg/L。
Further improve, described electrolysis additive comprise poly N-vinyl imidazoles and N-vinyl imidazole-acrylic acid commonPolymers; The mass ratio of poly N-vinyl imidazoles and N-vinyl imidazole-acrylic copolymer is 1:1.
Further improve, in the electrolysis workshop section that produces electrolytic manganese metal, in electrolyte, manganese content is 15～20g/L, sulphurAcid ammonium content is 90～110g/L.
Further improve, while producing electrolytic manganese metal, the cathode-current density in electrolytic process is 330～450A/m2, electrolyzer temperature is 38～50 DEG C, electrolyte pH=7.2～8.0.
Environment-friendly high-efficiency used in the present invention is produced the electrolysis additive poly N-vinyl imidazoles (PNVI) of electrolytic manganese metal,The solubility of this electrolysis additive in electrolyte is minimum, joins electrolytic manganese production sulfur acid manganese and sulfuric acid used when useIn the electrolyte of ammonium, the content of this electrolysis additive in electrolyte is controlled at 1-40mg/L;
The electrolysis additive N-vinyl imidazole-acrylic acid of environment-friendly high-efficiency production electrolytic manganese metal used in the present invention is commonPolymers (PNVI-PA) than PNVI, has increased carboxyl on polymer chain, has suitably improved its dissolving in electrolyteAbility, is convenient to it and dissolves in electrolyte when use, be conducive to practical operation, but the solubility of this copolymer still veryLittle. These two kinds of very little solubility of polymer have been avoided the accumulation of polymer in constantly soaking ore deposit-electrolysis cycle, can be to electricitySolution process has a negative impact.
These two kinds of polymer that electrolysis additive is environment-protecting asepsis, can be used for substituting and are widely used at present poisonous or have a dirtThe selenium dioxide dying and sulfur dioxide. Experiment confirms, these two kinds of polymer can be up to for its current efficiency of electrolytic manganese production66-70%, approaches with using selenium dioxide additive, be apparently higher than using sulfur dioxide additive, and these two kinds of polymerThere is no the such toxicity of selenium dioxide, do not have that gas of sulfur dioxide to overflow yet and cause the problem of production environment worsening condition,A kind of environmental protection, additive efficiently. In addition, also find that the temperature tolerance of these two kinds of additives is very high, electricity at 48-50 DEG CSolution does not affect substantially on current efficiency, all good compared with selenium dioxide and sulfur dioxide in this point, selenium dioxide and sulfur dioxideAdditive more than 44 DEG C just starts obvious decline with regard to current efficiency in temperature. This electrolysis additive solubility is little in addition, can beIn electrolyte, accumulate, production process is simple to operate, and manganese metal electrolytic efficiency is high, and product purity is high, and electrolytic process is stable, to electrolysisThe purity requirement of liquid is lower, has reduced difficulty and cost that electrolytic manganese metal is produced, has stronger propagation and employment and is worth.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present inventionBe described in further detail. Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and need notIn limiting invention.
The object of the invention is to overcome current use SeO2And SO2The existing above-mentioned deficiency of additive, a kind of electricity is providedSeparate the electrolysis additive that manganese metal environment-friendly high-efficiency is produced, use poly-(N-vinyl imidazole) (PNVI), N-vinyl imidazole-the thirdOlefin(e) acid copolymer (PNVI-PA), or both mixing are used as electrolysis additive jointly. This additive does not contain selenium, environmental protection, nothingPollute, production process is simple to operate, electrolysis production process stabilization, and electrolytic efficiency is high, good product purity.
The object of the present invention is to provide a kind of environment-friendly high-efficiency to produce the method for electrolytic manganese metal, in electrolytic process, usePoly N-vinyl imidazoles (PNVI), N-vinyl imidazole-acrylic copolymer (PNVI-PA), or both are used as jointlyElectrolysis additive, its chemical structural formula is:
For PNVI, wherein a=20～700; For PNVI-PA, n=15～600, m=20～800.
In embodiments of the present invention, the molecular weight of the electrolysis additive PNVI using is between 2000～67000.
In embodiments of the present invention, the molecular weight of the electrolysis additive PNVI-PA using is between 3000～115000.
In embodiments of the present invention, the content of this electrolysis additive in electrolytic manganese production electrolyte used is controlled at 1-40mg/L。
In embodiments of the present invention, this electrolysis additive can be PNVI.
In embodiments of the present invention, this electrolysis additive can be PNVI-PA.
In embodiments of the present invention, this electrolysis additive can be PNVI and PNVI-PA mixing composition.
In embodiments of the present invention, producing when electrolytic manganese metal, by electrolysis additive directly join manganese content 15～20g/L, in the electrolyte of ammonium sulfate content 90～110g/L, fully stirring and dissolving.
In embodiments of the present invention, in the time using electrolysis additive to produce electrolytic manganese metal, in electrolytic process, adoptCathode-current density is 350～450A/m2, electrolyzer temperature is between 38～50 DEG C, between electrolyte pH=7.2～8.0.
In embodiments of the present invention, the manufacturing condition that uses electrolysis additive to produce electrolytic manganese metal is: (1) electrolysisLiquid is added workshop section: requiring manganese content in electrolyte is that 32-38g/L, ammonium sulfate content are controlled at 6.5-at 90-110g/L, pH6.8; (2) electrolysis workshop section: requiring manganese content in electrolytic cell is that 15-20g/L, ammonium sulfate content are controlled at 90-110g/L, pH7.5-8.0; Groove temperature 38-50 DEG C, electrolysing period is 24 hours.
Embodiment 1:
Get above-mentioned polymer P NVI (number-average molecular weight 23,000) as additive, this additive content in electrolyte is1mg/L。
This additive without selenium electrolytic manganese metal High-efficient Production can be directly at existing use SeO2Or SO2As addingAdd on the electrolytic producer apparatus of agent and apply, use manufacturing condition of the present invention to add workshop section for (1) electrolyte: qualifying liquid is wantedAsking manganese content is that 32-38g/L, ammonium sulfate content are controlled at 6.5-6.8 at 90-110g/L, pH. (2) electrolysis workshop section: in electrolytic cellRequiring manganese content is that 15-20g/L, ammonium sulfate content are controlled at 7.5-8.0 at 90-110g/L, pH. Groove temperature 38-50 DEG C; Electrolysis weekPhase is 24 hours, current density 350～450A/m2。
Carry out pilot production at electrolytic manganese factory, electrolytic process is steady, pH value stabilization, and electrolytic manganese board face is smooth, substantially without manganeseKnot, panel edges dendrite is few, Faradaic current efficiency 68.3%.
Embodiment 2:
Get above-mentioned polymer P NVI (number-average molecular weight 9,000) as additive, this additive content in electrolyte is40mg/L。
This additive without selenium electrolytic manganese metal High-efficient Production can be directly at existing use SeO2Or SO2As addingAdd on the electrolytic producer apparatus of agent and apply, use manufacturing condition of the present invention to add workshop section for (1) electrolyte: qualifying liquid is wantedAsking manganese content is that 32-38g/L, ammonium sulfate content are controlled at 6.5-6.8 at 90-110g/L, pH. (2) electrolysis workshop section: in electrolytic cellRequiring manganese content is that 15-20g/L, ammonium sulfate content are controlled at 7.5-8.0 at 90-110g/L, pH. Groove temperature 38-50 DEG C; Electrolysis weekPhase is 24 hours, current density 350～400A/m2。
Test at electrolytic manganese factory, electrolytic process is steady, pH value stabilization, and electrolytic manganese board face is smooth, substantially without manganese knot, plateEdge dendrite is few, Faradaic current efficiency 69.1%.
Embodiment 3:
Get above-mentioned polymer P NVI-PA (number-average molecular weight 38,000) as additive, this additive contains in electrolyteAmount is 2mg/L.
This additive without selenium electrolytic manganese metal High-efficient Production can be directly at existing use SeO2Or SO2As addingAdd on the electrolytic producer apparatus of agent and apply, use manufacturing condition of the present invention to add workshop section for (1) electrolyte: qualifying liquid is wantedAsking manganese content is that 32-38g/L, ammonium sulfate content are controlled at 6.5-6.8 at 90-110g/L, pH. (2) electrolysis workshop section: in electrolytic cellRequiring manganese content is that 15-20g/L, ammonium sulfate content are controlled at 7.5-8.0 at 90-110g/L, pH. Groove temperature 38-50 DEG C; Electrolysis weekPhase is 24 hours, current density 350～430A/m2。
Electrolytic manganese factory is tested, and electrolytic process is steady, pH value stabilization, and electrolytic manganese board face is smooth, substantially without manganese knot, edges of boardsEdge dendrite is few, Faradaic current efficiency 68.7%.
Embodiment 4:
Get above-mentioned polymer P NVI-PA (number-average molecular weight 38,000) and polymer P NVI's (number-average molecular weight 9,000)Mixture is as additive, and both mass ratios are 1:1, and this mixture additive is content 5mg/L in electrolyte.
This additive without selenium electrolytic manganese metal High-efficient Production can be directly at existing use SeO2Or SO2As addingAdd on the electrolytic producer apparatus of agent and apply, use manufacturing condition of the present invention to add workshop section for (1) electrolyte: qualifying liquid is wantedAsking manganese content is that 32-38g/L, ammonium sulfate content are controlled at 6.5-6.8 at 90-110g/L, pH. (2) electrolysis workshop section: in electrolytic cellRequiring manganese content is that 15-20g/L, ammonium sulfate content are controlled at 7.5-8.0 at 90-110g/L, pH. Groove temperature 38-50 DEG C; Electrolysis weekPhase is 24 hours, current density 350～400A/m2。
Electrolytic manganese factory is tested, and electrolytic process is steady, pH value stabilization, and electrolytic manganese board face is smooth, substantially without manganese knot, edges of boardsEdge dendrite is few, Faradaic current efficiency 70.2%.
Additive provided by the invention and technique electrolytic manganese metal sheet after testing manganese content reach 99.9%, belong to high-purity electricitySeparate manganese metal.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all in essence of the present inventionAny amendment of doing within god and principle, be equal to replacement and improvement etc., within protection scope of the present invention all should be included in.
Claims (10)
1. environment-friendly high-efficiency is produced an electrolysis additive for electrolytic manganese metal, it is characterized in that, described electrolysis additive comprises poly-N-vinyl imidazole and/or N-vinyl imidazole-acrylic copolymer;
The chemical formula of poly N-vinyl imidazoles is:
Wherein, a=20～700;
The chemical formula of N-vinyl imidazole-acrylic copolymer is:
Wherein, n=15～600, m=20～800.
2. environment-friendly high-efficiency as claimed in claim 1 is produced the electrolysis additive of electrolytic manganese metal, it is characterized in that described poly-N-The molecular weight of vinyl imidazole is 2000～67000; The molecular weight of N-vinyl imidazole-acrylic copolymer is 3000～115000。
3. environment-friendly high-efficiency as claimed in claim 1 is produced the electrolysis additive of electrolytic manganese metal, it is characterized in that described electrolysisAdditive comprises poly N-vinyl imidazoles and N-vinyl imidazole-acrylic copolymer; Poly N-vinyl imidazoles and N-vinylThe mass ratio of imidazoles-acrylic copolymer is 1:1.
4. environment-friendly high-efficiency is produced a method for electrolytic manganese metal, it is characterized in that, in the process of producing electrolytic manganese metal, makesWith electrolysis additive, described electrolysis additive comprises poly N-vinyl imidazoles and/or N-vinyl imidazole-acrylic copolymer;
The chemical formula of poly N-vinyl imidazoles is:
Wherein, a=20～700;
The chemical formula of N-vinyl imidazole-acrylic copolymer is:
Wherein, n=15～600, m=20～800.
5. environment-friendly high-efficiency as claimed in claim 4 is produced the method for electrolytic manganese metal, it is characterized in that described poly N-vinylThe molecular weight of imidazoles is 2000～67000.
6. environment-friendly high-efficiency as claimed in claim 4 is produced the method for electrolytic manganese metal, it is characterized in that described N-vinyl miaowThe molecular weight of azoles-acrylic copolymer is 3000～115000.
7. environment-friendly high-efficiency as claimed in claim 4 is produced the method for electrolytic manganese metal, it is characterized in that, raw at electrolytic manganese metalIn product, the concentration of described electrolysis additive in electrolyte is 1-40mg/L.
8. environment-friendly high-efficiency as claimed in claim 4 is produced the method for electrolytic manganese metal, it is characterized in that described electrolysis additiveComprise poly N-vinyl imidazoles and N-vinyl imidazole-acrylic copolymer; Poly N-vinyl imidazoles and N-vinyl imidazole-the thirdThe mass ratio of olefin(e) acid copolymer is 1:1.
9. environment-friendly high-efficiency as claimed in claim 4 is produced the method for electrolytic manganese metal, it is characterized in that, is producing electrolytic metalThe electrolysis workshop section of manganese, in electrolyte, manganese content is 15～20g/L, ammonium sulfate content is 90～110g/L.
10. environment-friendly high-efficiency as claimed in claim 4 is produced the method for electrolytic manganese metal, it is characterized in that, produces electrolytic metalWhen manganese, the cathode-current density in electrolytic process is 330～450A/m2, electrolyzer temperature is 38～50 DEG C, electrolyte pH=7.2～8.0。
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| CN114959796A (en) * | 2022-05-18 | 2022-08-30 | 贵州省新材料研究开发基地 | Additive for electrolyzing metal manganese and application of additive in electrolyzing manganese |
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| CN102691072A (en) * | 2012-06-01 | 2012-09-26 | 湘西自治州三泰精细化工有限责任公司 | Special additive for electrolytic manganese metal and preparation method thereof |
| CN103540952B (en) * | 2012-07-17 | 2016-01-06 | 吉首大学 | One type electrolytic gold belongs to the nitrogenous cyclic organic materials additive of manganese High-efficient Production |
| CN103173786A (en) * | 2013-04-02 | 2013-06-26 | 吉首大学 | Method for environmentally friendly and efficiently producing electrolytic manganese metal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959796A (en) * | 2022-05-18 | 2022-08-30 | 贵州省新材料研究开发基地 | Additive for electrolyzing metal manganese and application of additive in electrolyzing manganese |
| CN114959796B (en) * | 2022-05-18 | 2023-09-29 | 贵州省新材料研究开发基地 | Additive for electrolytic manganese metal and application of additive in electrolytic manganese |
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