CN110735154A - Method for producing electrolytic manganese metal and active manganese dioxide by anode mud produced by electrolytic manganese metal - Google Patents
Method for producing electrolytic manganese metal and active manganese dioxide by anode mud produced by electrolytic manganese metal Download PDFInfo
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- 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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- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/02—Elemental selenium or tellurium
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
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- 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
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Abstract
The invention belongs to the technical field of electrolytic production and manganese recovery by a solution electrolytic method, and particularly relates to a method for producing electrolytic manganese metal and active manganese dioxide by anode mud produced by electrolyzing manganese metal, which comprises the following steps: A. slurrying anode mud produced in the process of electrolyzing metal manganese, adding ammonia water to adjust the pH value of the solution to 9-10, carrying out solid-liquid separation after filter pressing, washing to obtain a filter pressing block and washing water, and recycling the washing water; B. calcining the filter-pressing block, leaching by using anolyte for electrolyzing metal manganese, and carrying out solid-liquid separation after filter-pressing to obtain a manganese dioxide filter-pressing block and a manganese sulfate solution; C. acid leaching and filter pressing the manganese dioxide filter pressing block to obtain a manganese dioxide filter pressing block and a lead water solution, washing the filter pressing block with water, drying and grinding to obtain active manganese dioxide; D. removing impurities from the manganese sulfate solution, standing to obtain electrolyte, and electrolyzing and post-treating the electrolyte to obtain electrolytic manganese metal. The method realizes the recycling of resources and improves the income; safe and environment-friendly, and has no pollution.
Description
Technical Field
The invention belongs to the technical field of electrolytic production and manganese recovery by a solution electrolytic method, and particularly relates to a method for producing electrolytic manganese metal and manganese dioxide by using anode mud produced by electrolytic manganese metal.
Background
The anode slag generated in the production process of electrolytic manganese metal is also called anode mud, and the anode mud contains high-content substances such as manganese dioxide, ammonium sulfate, sulfuric acid, manganese sulfate, lead, selenium and the like. Through the investigation of the enterprises for producing electrolytic manganese metal in the current industry of China, the manganese content in the anode mud produced by the electrolytic manganese metal accounts for about 7-10% of the total manganese input.
In the existing electrolytic manganese metal production, anode mud is not recycled, but is sold to an intermediate merchant at a low price and then is sold to manganese alloy production enterprises to be used as a raw material for smelting alloys by a pyrogenic process, and discharged harmful gases such as ammonia, nitrogen, sulfur dioxide, selenium dioxide, lead-containing smoke and the like cause serious pollution to air and environment and loss of auxiliary materials.
related researches have been carried out in the aspect of anode mud treatment, for example, in jiatian, methods for recycling electrolytic manganese metal anode slag have been developed, wherein the recycling method comprises the steps of using oxalic acid as a reducing agent, using concentrated sulfuric acid and oxalic acid to reduce and leach manganese in the anode slag, and carrying out neutralization, oxidation and vulcanization treatment (publication number is CN103436914A) on a leachate after filter pressing.
Disclosure of Invention
In view of the above, the present invention aims to provide methods for producing electrolytic manganese metal and manganese dioxide from anode slime produced by electrolytic manganese metal.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the method for producing electrolytic manganese metal and manganese dioxide by using anode mud produced by electrolyzing the manganese metal comprises the following steps:
A. grinding anode mud produced in the process of electrolyzing metal manganese into powder and slurrying, adding ammonia water to adjust the pH of the solution to 9-10, performing solid-liquid separation after filter pressing, washing to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter-pressing block, leaching by using anolyte for electrolyzing metal manganese, and carrying out solid-liquid separation after filter-pressing to obtain a manganese dioxide filter-pressing block and a manganese sulfate solution;
C. acid leaching the manganese dioxide filter pressing block by using acetic acid solution and ammonia water solution, filter-pressing to obtain a manganese dioxide filter pressing block and a lead water solution, washing the manganese dioxide filter pressing block with water, drying, and grinding to obtain active manganese dioxide;
D. removing impurities from the manganese sulfate solution, standing to obtain electrolyte, and electrolyzing and post-treating the electrolyte to obtain electrolytic manganese metal.
The slurrying refers to mixing anode mud and water, wherein the slurrying degree is that the content of divalent manganese ions in a slurried solution is 25-40 g/L.
The post-treatment refers to series operations for treating electrolytic manganese metal after electrolysis, and comprises the steps of purification, water washing, drying, stripping, plate treatment and the like.
The method solves the balance problem in the sulfuric acid filter pressing and electrolysis processes.
The method enables part of manganese dioxide in the anode mud to be converted into active manganese dioxide, part of manganese dioxide generates manganese sulfate to be continuously electrolyzed, so that the recovery rate of manganese is improved, and in addition, , the generation of waste residues is greatly reduced, so that the production cost is reduced.
The method does not generate NH in the production process3And the like, is safe and environment-friendly, and has no pollution.
And , the temperature of the calcination is 540-800 ℃.
, the dosage of the anode liquid is that the content of the bivalent manganese ion in the solution after the reaction is 25-40 g/L.
And , drying at 100-200 deg.c.
, the method also comprises the following steps that the anolyte electrolyzed in the step E and the step D is used for the leaching procedure in the step B, and the anode mud is used for the step A.
The method recycles the anode mud and the anolyte, greatly reduces the production cost and recovers lead while eliminating pollution sources.
And step , adding ammonia water into the washing water, and performing filter pressing to be used in the washing process of the step A.
The method of the invention recycles water, reduces production cost and improves resource utilization rate.
And , the ammonia water is used in an amount which can make the divalent manganese ion in the washing water react completely.
Further , the method includes the steps of:
A. grinding anode mud produced in the process of electrolyzing metal manganese into powder and slurrying, adding ammonia water to adjust the pH of the solution to 9-10, performing solid-liquid separation after filter pressing, washing to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter pressing block at the temperature of 540-; the dosage of the anolyte is that the content of bivalent manganese ions in the solution after reaction is 25-40 g/L;
C. acid leaching and filter-pressing the manganese dioxide filter-pressing block to obtain a manganese dioxide filter-pressing block and a lead water solution, drying and grinding the manganese dioxide filter-pressing block to obtain active manganese dioxide, and recovering lead;
D. removing impurities from a manganese sulfate solution, standing to obtain an electrolyte, and electrolyzing and post-treating the electrolyte to obtain electrolytic manganese metal;
E. d, using the electrolyzed anolyte in the step B in the leaching procedure, and using anode mud in the step A;
F. and (3) adding ammonia water into the washing water, and performing filter pressing to be used in the washing procedure of the step A, wherein the dosage of the ammonia water can enable the divalent manganese ions in the washing water to completely react.
The lead recovery refers to the steps of putting active manganese dioxide into an ammonium acetate solution, then carrying out filter pressing and solid-liquid separation, adding a sulfuric acid solution into the liquid, and filtering to obtain a lead sulfate precipitate.
And the step of recovering the selenium is to introduce gas obtained by calcination into water, then introduce sulfur dioxide gas into the solution, and filter to obtain selenium precipitate.
And , the leaching temperature is 30-80 ℃.
The method can produce two kinds of products simultaneously, thereby reducing unit power consumption of the products.
The electrolytic manganese metal is produced by utilizing the prior art, the main component of anode mud is manganese dioxide, and Mn (mainly MnO) accounting for 7-10% of the mass ratio of the input ore is taken away2The method for producing the electrolytic manganese metal comprises the steps of preparing manganese dioxide in anode mud, converting part of the manganese dioxide in the anode mud into active manganese dioxide, generating part of the manganese dioxide into manganese sulfate for recycling, and continuously electrolyzing, so that the recovery rate of the manganese is improved.
When the method of the invention is used for producing electrolytic manganese metal and active manganese dioxide, 1 ton of active manganese dioxide (about 10000 yuan/ton), 0.5 ton of electrolytic manganese metal (about 11000 yuan/ton), 0.117-0.168 ton of lead sulfate (about 770 yuan/ton) and 0.0023-0.0069 ton of selenium (about 2000 yuan/ton) can be prepared when 2.3 ton of anode mud (about 400 yuan/ton) and 2800 DEG electric quantity (about 0.41 yuan/ton) are consumed. Namely, every 2.3 tons of anode mud are consumed, the income is about 13067 yuan and 13631 yuan.
And other agents are not required to be added for treatment, new impurity ions are not introduced, and the additional treatment of the impurity ions is not required.
The invention has the beneficial effects that:
(1) the electrolytic manganese metal and the active manganese dioxide are produced by using the anode slime, so that the anode slime is treated, the electrolytic manganese metal is obtained, the resource is recycled, the income can be improved, and lead is recycled.
(2) The anode mud and the anolyte are recycled, and a pollution source is eliminated, so that the environment-friendly use of the anode mud is realized.
(3) When the method is used for producing the electrolytic manganese metal and the active manganese dioxide, the anode mud, the anolyte and the water can be recycled, so that the cost is reduced and the benefit is improved.
(4) When the method is used for producing the electrolytic manganese metal, parts of manganese dioxide in the anode mud are converted into active manganese dioxide, parts of manganese dioxide are generated into manganese sulfate for recycling and continuous electrolysis, so that the recovery rate of manganese is improved, meanwhile, the generated active manganese dioxide (about 10000 yuan/ton) is greatly improved, and the recovery yield of lead and selenium is improved.
(5) When the method of the invention is used for producing electrolytic manganese metal and active manganese dioxide, 1 ton of active manganese dioxide (about 10000 yuan/ton), 0.5 ton of electrolytic manganese metal (about 11000 yuan/ton), 0.117-0.168 ton of lead sulfate (about 770 yuan/ton) and 0.0023-0.0069 ton of selenium (about 100000 yuan/ton) can be prepared when 2.3 ton of anode mud (about 400 yuan/ton) and 2800 DEG electric quantity (about 0.41 yuan/ton) are consumed. That is, each ton of anode mud is consumed by 2.3 tons, the yield is about 13292.4-14307.2 yuan.
(6) And other agents are not required to be added for treatment, new impurity ions are not introduced, and the additional treatment of the impurity ions is not required.
(7) The method produces two products simultaneously, thereby reducing the unit power consumption of the products, leading the production to be more stable and leading the operation to be simpler.
(8) Does not generate NH3And the like, is safe and environment-friendly, and has no pollution.
(9) The obtained electrolytic manganese metal and active manganese dioxide have high purity, the manganese content in the electrolytic manganese metal is more than or equal to 99.8 percent, and the manganese dioxide content in the active manganese dioxide is more than or equal to 90 percent.
(10) The method solves the balance problem in the sulfuric acid filter pressing and electrolysis processes.
Detailed Description
The examples are provided for better illustration of the present invention, but the present invention is not limited to the examples. Therefore, those skilled in the art should make insubstantial modifications and adaptations to the embodiments of the present invention in light of the above teachings and remain within the scope of the invention.
Example 1
The method for producing electrolytic manganese metal and manganese dioxide by using anode mud produced by electrolyzing the manganese metal comprises the following specific steps:
A. grinding anode mud produced in the process of electrolyzing metal manganese into 80-mesh powder, slurrying (the slurrying degree is that the content of divalent manganese ions in the slurried solution is 25g/L), adding ammonia water to adjust the pH value of the solution to 9, carrying out solid-liquid separation after filter pressing, washing to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter pressing block at 800 ℃, extracting gas to recover selenium, leaching the calcined solid by using anode liquor of electrolytic manganese metal at 55 ℃ (the dosage is 25g/L of divalent manganese ions in the solution after reaction), and performing solid-liquid separation after filter pressing to obtain a manganese dioxide filter pressing block and a manganese sulfate solution;
C. acid leaching and filter-pressing the manganese dioxide filter-pressing block with acetic acid solution and ammonia water solution to obtain a manganese dioxide filter-pressing block and a lead water solution, recovering lead, washing the manganese dioxide filter-pressing block with water, drying at the temperature of 100 ℃, and grinding to obtain powdery active manganese dioxide (the content of manganese dioxide in the active manganese dioxide is detected according to GB/T1507-2006 potassium dichromate titration method for determining the effective oxygen content of manganese ore, and the content of the manganese dioxide is measured to be 90%); the powdery manganese dioxide has large surface area, then active manganese dioxide is placed in an ammonium acetate solution, filter pressing and solid-liquid separation are carried out, a sulfuric acid solution is added into the liquid, and lead sulfate precipitation is obtained by filtration;
D. removing impurities from a manganese sulfate solution, standing to obtain an electrolyte, electrolyzing the electrolyte, and performing post-treatment to obtain electrolytic manganese metal (detecting the manganese content in the electrolytic manganese metal according to GB/T8654.7-1988 manganese metal chemical analysis method potentiometric titration method for determining manganese content, and detecting that the manganese content is 99.8%);
E. d, using the electrolyzed anolyte in the step D in the leaching process in the step B, and using the anode mud in the step A.
F. And (3) adding ammonia water (the dosage is enough to enable the divalent manganese ions in the washing water to completely react) into the washing water, and performing filter pressing to be used for the washing procedure of the step A.
When the method is used for producing electrolytic manganese metal and active manganese dioxide, 1 ton of active manganese dioxide, 0.5 ton of electrolytic manganese metal, 0.117-0.168 ton of lead sulfate and 0.0023-0.0069 ton of selenium can be prepared when 2.3 tons of anode mud are consumed and 2800 DEG electric quantity is consumed.
Example 2
The method for producing electrolytic manganese metal and manganese dioxide by using anode mud produced by electrolyzing the manganese metal comprises the following specific steps:
A. grinding anode mud produced in the process of electrolyzing metal manganese into 100-mesh powder, slurrying (the slurrying degree is that the content of divalent manganese ions in the slurried solution is 30g/L), adding ammonia water to adjust the pH value of the solution to 10, carrying out solid-liquid separation after filter pressing, washing with water to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter pressing block at 750 ℃, extracting gas to recover selenium, leaching the calcined solid by using 60-DEG C anolyte for electrolyzing metal manganese (the dosage is that the content of bivalent manganese ions in the solution after reaction is 40g/L), and performing solid-liquid separation after filter pressing to obtain a manganese dioxide filter pressing block and a manganese sulfate solution;
C. acid leaching and filter-pressing the manganese dioxide filter-pressing block with acetic acid solution and ammonia water solution to obtain a manganese dioxide filter-pressing block and a lead water solution, recovering lead, washing the manganese dioxide filter-pressing block with water, drying at the temperature of 200 ℃, and grinding to obtain powdery active manganese dioxide (the content of manganese dioxide in the active manganese dioxide is detected according to GB/T1507-2006 potassium dichromate titration method for determining the effective oxygen content of manganese ore, and the content of the manganese dioxide is measured to be 90%); the powdery manganese dioxide has large surface area, then active manganese dioxide is placed in an ammonium acetate solution, filter pressing and solid-liquid separation are carried out, a sulfuric acid solution is added into the liquid, and lead sulfate precipitation is obtained by filtration;
D. removing impurities from a manganese sulfate solution, standing to obtain an electrolyte, electrolyzing the electrolyte, and performing post-treatment to obtain electrolytic manganese metal (detecting the manganese content in the electrolytic manganese metal according to GB/T8654.7-1988 manganese metal chemical analysis method potentiometric titration method for determining manganese content, and detecting that the manganese content is 99.8%);
E. d, using the electrolyzed anolyte in the step D in the leaching process in the step B, and using the anode mud in the step A.
F. And (3) adding ammonia water (the dosage is enough to enable the divalent manganese ions in the washing water to completely react) into the washing water, and performing filter pressing to be used in the washing procedure of the step A.
When the method is used for producing electrolytic manganese metal and active manganese dioxide, 1 ton of active manganese dioxide, 0.5 ton of electrolytic manganese metal, 0.117-0.168 ton of lead sulfate and 0.0023-0.0069 ton of selenium can be prepared when 2.3 tons of anode mud are consumed and 2800 DEG electric quantity is consumed.
Example 3
The method for producing electrolytic manganese metal and manganese dioxide by using anode mud produced by electrolyzing the manganese metal comprises the following specific steps:
A. grinding anode mud produced in the process of electrolyzing metal manganese into 90-mesh powder, slurrying (the slurrying degree is that the content of divalent manganese ions in the slurried solution is 40g/L), adding ammonia water to adjust the pH value of the solution to 9.5, carrying out solid-liquid separation after filter pressing, washing with water to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter pressing block at 540 ℃, extracting gas to recover selenium, leaching the calcined solid by using 80 ℃ anolyte for electrolyzing metal manganese (the dosage is that the content of bivalent manganese ions in the solution after reaction is 32g/L), and performing solid-liquid separation after filter pressing to obtain a manganese dioxide filter pressing block and a manganese sulfate solution;
C. acid leaching and filter-pressing the manganese dioxide filter-pressing block with acetic acid solution and ammonia water solution to obtain a manganese dioxide filter-pressing block and a lead water solution, recovering lead, washing the manganese dioxide filter-pressing block with water, drying at the temperature of 150 ℃, and grinding to obtain powdery active manganese dioxide (the content of manganese dioxide in the active manganese dioxide is detected according to GB/T1507-2006 determination of manganese ore effective oxygen content, and the content of manganese dioxide is measured to be 90%); the powdery manganese dioxide has large surface area, then active manganese dioxide is placed in an ammonium acetate solution, filter pressing and solid-liquid separation are carried out, a sulfuric acid solution is added into the liquid, and lead sulfate precipitation is obtained by filtration;
D. removing impurities from a manganese sulfate solution, standing to obtain an electrolyte, electrolyzing the electrolyte, and performing post-treatment to obtain electrolytic manganese metal (detecting the manganese content in the electrolytic manganese metal according to GB/T8654.7-1988 manganese metal chemical analysis method potentiometric titration method for determining manganese content, and detecting that the manganese content is 99.9%);
E. d, using the electrolyzed anolyte in the step D in the leaching process in the step B, and using the anode mud in the step A.
F. And (3) adding ammonia water (the dosage is enough to enable the divalent manganese ions in the washing water to completely react) into the washing water, and performing filter pressing to be used for the washing procedure of the step A.
When the method is used for producing electrolytic manganese metal and active manganese dioxide, 1 ton of active manganese dioxide, 0.5 ton of electrolytic manganese metal, 0.117-0.168 ton of lead sulfate and 0.0023-0.0069 ton of selenium can be prepared when 2.3 tons of anode mud are consumed and 2800 DEG electric quantity is consumed.
Example 4
The method for producing electrolytic manganese metal and manganese dioxide by using anode mud produced by electrolyzing the manganese metal comprises the following specific steps:
A. grinding anode mud produced in the process of electrolyzing metal manganese into 100-mesh powder, slurrying (the slurrying degree is that the content of divalent manganese ions in the slurried solution is 35g/L), adding ammonia water to adjust the pH value of the solution to 9.8, carrying out solid-liquid separation after filter pressing, washing with water to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter pressing block at 630 ℃, extracting gas to recover selenium, leaching the calcined solid by 30 ℃ anolyte of electrolytic manganese metal (the dosage is that the content of bivalent manganese ions in the solution after reaction is 35g/L), and performing solid-liquid separation after filter pressing to obtain a manganese dioxide filter pressing block and a manganese sulfate solution;
C. acid leaching and filter-pressing the manganese dioxide filter-pressing block with acetic acid solution and ammonia water solution to obtain a manganese dioxide filter-pressing block and a lead water solution, recovering lead, washing the manganese dioxide filter-pressing block with water, drying at the temperature of 120 ℃, and grinding to obtain powdery active manganese dioxide (the content of manganese dioxide in the active manganese dioxide is detected according to GB/T1507-2006 potassium dichromate titration method for determining the effective oxygen content of manganese ore, and the content of the manganese dioxide is 90 percent); the powdery manganese dioxide has large surface area, then active manganese dioxide is placed in an ammonium acetate solution, filter pressing and solid-liquid separation are carried out, a sulfuric acid solution is added into the liquid, and lead sulfate precipitation is obtained by filtration;
D. removing impurities from a manganese sulfate solution, standing to obtain an electrolyte, electrolyzing the electrolyte, and performing post-treatment to obtain electrolytic manganese metal (detecting the manganese content in the electrolytic manganese metal according to GB/T8654.7-1988 manganese metal chemical analysis method potentiometric titration method for determining manganese content, and detecting that the manganese content is 99.8%);
E. d, using the electrolyzed anolyte in the step D in the leaching process in the step B, and using the anode mud in the step A.
F. And (3) adding ammonia water (the dosage is enough to enable the divalent manganese ions in the washing water to completely react) into the washing water, and performing filter pressing to be used for the washing procedure of the step A.
When the method is used for producing electrolytic manganese metal and active manganese dioxide, 1 ton of active manganese dioxide, 0.5 ton of electrolytic manganese metal, 0.117-0.168 ton of lead sulfate and 0.0023-0.0069 ton of selenium can be prepared when 2.3 tons of anode mud are consumed and 2800 DEG electric quantity is consumed.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment contains independent technical solutions, and such description of the description is only for clarity, and those skilled in the art should take the description as as a whole, and the technical solutions in the respective embodiments may be combined appropriately to form other embodiments that those skilled in the art can understand.
Claims (9)
1. The method for producing electrolytic manganese metal and active manganese dioxide by using anode mud produced by electrolyzing the manganese metal is characterized by comprising the following steps of:
A. grinding anode mud produced in the process of electrolyzing metal manganese into powder and slurrying, adding ammonia water to adjust the pH of the solution to 9-10, performing solid-liquid separation after filter pressing, washing to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter-pressing block, leaching by using anolyte for electrolyzing metal manganese, and carrying out solid-liquid separation after filter-pressing to obtain a manganese dioxide filter-pressing block and a manganese sulfate solution;
C. acid leaching the manganese dioxide filter pressing block by using acetic acid solution and ammonia water solution, filter-pressing to obtain a manganese dioxide filter pressing block and a lead water solution, washing the manganese dioxide filter pressing block with water, drying, and grinding to obtain active manganese dioxide;
D. removing impurities from the manganese sulfate solution, standing to obtain electrolyte, and electrolyzing and post-treating the electrolyte to obtain electrolytic manganese metal.
2. The method as claimed in claim 1, wherein the temperature of the calcination is 540-800 ℃.
3. The method according to claim 1 or 2, characterized in that the anolyte is used in such an amount that the content of divalent manganese ions in the solution after the reaction is 25-40 g/L.
4. The method as claimed in claim 1, 2 or 3, wherein the temperature of the drying is 100-200 ℃.
5. The method of claim 1, 2, 3 or 4 further comprising the step of using the anolyte after electrolysis in step e. step D for the leaching process in step B and the sludge in step a.
6. The method as claimed in claim 1, 2, 3, 4 or 5, further comprising step f. adding ammonia water to the washing water, and using the mixture after pressure filtration in the washing step a.
7. The method of claim 6, wherein the aqueous ammonia is used in an amount to completely react the divalent manganese ions in the wash water.
8. The method of any one of claims 1 to 7, , comprising the steps of:
A. grinding anode mud produced in the process of electrolyzing metal manganese into powder and slurrying, adding ammonia water to adjust the pH of the solution to 9-10, performing solid-liquid separation after filter pressing, washing to obtain a filter pressing block and washing water, and recycling the washing water;
B. calcining the filter pressing block at the temperature of 540-; the dosage of the anolyte is that the content of bivalent manganese ions in the solution after reaction is 25-40 g/L;
C. acid leaching and filter-pressing the manganese dioxide filter-pressing block to obtain a manganese dioxide filter-pressing block and a lead water solution, drying and grinding the manganese dioxide filter-pressing block to obtain active manganese dioxide, and recovering lead;
D. removing impurities from a manganese sulfate solution, standing to obtain an electrolyte, and electrolyzing and post-treating the electrolyte to obtain electrolytic manganese metal;
E. d, using the electrolyzed anolyte in the step B in the leaching procedure, and using anode mud in the step A;
F. and (3) adding ammonia water into the washing water, and performing filter pressing to be used in the washing procedure of the step A, wherein the dosage of the ammonia water can enable the divalent manganese ions in the washing water to completely react.
9. The method of , wherein the leaching temperature is 30-80 ℃.
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| CN201811135594.1A CN110735154B (en) | 2018-09-27 | 2018-09-27 | Method for producing electrolytic manganese metal and active manganese dioxide by anode mud produced by electrolytic manganese metal |
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| CN201811135594.1A CN110735154B (en) | 2018-09-27 | 2018-09-27 | Method for producing electrolytic manganese metal and active manganese dioxide by anode mud produced by electrolytic manganese metal |
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| CN110735154A true CN110735154A (en) | 2020-01-31 |
| CN110735154B CN110735154B (en) | 2021-09-24 |
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