CN115532793A - Process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag - Google Patents
Process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag Download PDFInfo
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- CN115532793A CN115532793A CN202210123308.XA CN202210123308A CN115532793A CN 115532793 A CN115532793 A CN 115532793A CN 202210123308 A CN202210123308 A CN 202210123308A CN 115532793 A CN115532793 A CN 115532793A
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- washing
- acid
- manganese
- ammonia nitrogen
- electrolytic manganese
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 43
- 239000011572 manganese Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000002893 slag Substances 0.000 title claims abstract description 23
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000003792 electrolyte Substances 0.000 claims abstract description 14
- 239000000706 filtrate Substances 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 229940099596 manganese sulfate Drugs 0.000 claims abstract description 7
- 239000011702 manganese sulphate Substances 0.000 claims abstract description 7
- 235000007079 manganese sulphate Nutrition 0.000 claims abstract description 7
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000003599 detergent Substances 0.000 claims description 11
- 210000003454 tympanic membrane Anatomy 0.000 claims description 11
- 239000004094 surface-active agent Substances 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 239000002738 chelating agent Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 claims description 4
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- -1 polydimethylsiloxane Polymers 0.000 claims description 4
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 150000007522 mineralic acids Chemical class 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 235000005985 organic acids Nutrition 0.000 claims description 3
- JSYPRLVDJYQMAI-TYYBGVCCSA-N (e)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C\C(O)=O JSYPRLVDJYQMAI-TYYBGVCCSA-N 0.000 claims description 2
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 claims description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 2
- FCKYPQBAHLOOJQ-UHFFFAOYSA-N Cyclohexane-1,2-diaminetetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)C1CCCCC1N(CC(O)=O)CC(O)=O FCKYPQBAHLOOJQ-UHFFFAOYSA-N 0.000 claims description 2
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- FSVCELGFZIQNCK-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)glycine Chemical compound OCCN(CCO)CC(O)=O FSVCELGFZIQNCK-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 229920002845 Poly(methacrylic acid) Polymers 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- 229920004890 Triton X-100 Polymers 0.000 claims description 2
- 239000013504 Triton X-100 Substances 0.000 claims description 2
- 235000011054 acetic acid Nutrition 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 235000015165 citric acid Nutrition 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 229960001484 edetic acid Drugs 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 239000000174 gluconic acid Substances 0.000 claims description 2
- 235000012208 gluconic acid Nutrition 0.000 claims description 2
- 235000011167 hydrochloric acid Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 229920000141 poly(maleic anhydride) Polymers 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- GYBINGQBXROMRS-UHFFFAOYSA-J tetrasodium;2-(1,2-dicarboxylatoethylamino)butanedioate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC(C([O-])=O)NC(C([O-])=O)CC([O-])=O GYBINGQBXROMRS-UHFFFAOYSA-J 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011656 manganese carbonate Substances 0.000 description 1
- 229940093474 manganese carbonate Drugs 0.000 description 1
- 235000006748 manganese carbonate Nutrition 0.000 description 1
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 description 1
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Detergent Compositions (AREA)
Abstract
The invention relates to a process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag, in particular to a process method for creatively washing filter residues by using washing liquid added with a washing agent under certain washing conditions in the filter pressing process of manganese sulfate electrolyte produced in an electrolytic manganese factory, so that the soluble manganese and the soluble ammonia nitrogen in the filter residues are washed and enter filtrate, the content of the soluble manganese and the soluble ammonia nitrogen in the electrolytic manganese slag is reduced, and the filtrate is recycled. The existing electrolytic manganese production device and process can be utilized, extra development investment is not needed, most of soluble manganese and soluble ammonia nitrogen in the electrolytic manganese slag generated by the existing production process can be recycled, and the electrolytic manganese slag recycling device is suitable for industrialization, reduces the emission of pollutants, recovers effective components, and has both environmental protection benefit and economic benefit.
Description
Technical Field
The invention relates to the field of electrolytic manganese chemical process, in particular to a process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag.
Background
The electrolytic manganese slag (hereinafter referred to as manganese slag) is industrial waste slag with high water content (25-30%) discharged in the electrolytic manganese metal production process. The existing electrolytic manganese industry adopts manganese carbonate mineral powder to prepare manganese sulfate electrolyte, and the electrolyte is required to be recycled under the push of policies such as energy conservation, emission reduction and environmental protection, so that zero discharge of waste water is realized. In the production process, in order to reduce the content of soluble manganese and ammonia nitrogen in the electrolytic manganese slag as much as possible, the filter residue is washed by clean water after the filter pressing is finished, but in order to keep the water balance in the electrolyte circulation process and control the solution expansion, the total amount of the used clean water cannot exceed 30 percent of the manganese slag, so the washing effect is limited. The manganese slag contains a large amount of soluble manganese and ammonia nitrogen, which not only causes resource waste, but also is easy to migrate along with the leakage liquid and pollutes the surrounding environment. The technology of the invention can recycle most of soluble manganese and soluble ammonia nitrogen in manganese slag generated by the existing production process after washing by the washing solution, is suitable for industrialization, reduces the emission of pollutants, recovers effective components, and has both environmental protection benefit and economic benefit.
Disclosure of Invention
The invention relates to a process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag, which is characterized in that in the filter pressing process of manganese sulfate electrolyte produced in an electrolytic manganese factory, washing filter pressing filter residues by using a washing liquid added with a washing agent under certain washing conditions, so that the soluble manganese and the soluble ammonia nitrogen in the filter residues are washed and enter filtrate, the content of the soluble manganese and the soluble ammonia nitrogen in the electrolytic manganese slag is reduced, and the filtrate is recycled.
The "detergent" includes: acids (inorganic acids, organic acids), metal chelating agents, and surfactants.
The invention relates to a process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag, which comprises the following steps:
the method comprises the following steps: preparing a certain amount of washing liquid from water and a detergent according to a certain proportion;
step two: heating the washing liquid to 50-95 ℃;
step three: and when the filter press finishes the normal filter pressing procedure but does not perform tympanic membrane pressurization, conveying the heated washing liquid to the filter press by using a pump for washing, performing tympanic membrane pressurization on the filter press until the washing is finished, and recovering the filtrate for preparing the electrolyte.
The certain proportion is as follows: a detergent: water =0.001 to 0.5.
The detergent is as follows: acids (inorganic acids, organic acids), metal chelating agents, and surfactants.
Such acids include, but are not limited to: sulfuric acid, carbonic acid (carbon dioxide), hydrochloric acid, citric acid, formic acid, acetic acid, oxalic acid, sulfosalicylic acid, tartaric acid, gluconic acid.
The class of metal chelators includes, but is not limited to: nitrilotriacetic acid NTA, ethylene diamine tetraacetic acid EDTA, hydroxyethyl ethylene diamine triacetic acid HEDTA, dihydroxyethyl glycine DEG, 1, 2-diaminocyclohexane tetraacetic acid DCYTA, iminodisuccinic acid sodium salt IDS, polyacrylic acid, polymethacrylic acid, hydrolyzed polymaleic anhydride, fumaric acid-acrylic acid copolymer.
The surfactant classes include, but are not limited to: sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium lauryl sulfate, polydimethylsiloxane, triton X-100, alkyl alcohol ether carboxylate, alkyl polyglycoside, alcohol ether phosphate monoester and Gemini surfactant.
The washing solution is as follows: according to the washing agent: water = 0.001-0.5, wherein the detergent used may be one or a mixture of several of the detergents described above.
The weight of the washing liquid is 20-30% of the weight of the slag.
The washing process is that when the filter press finishes normal mixed liquid feeding and maintains the pressure for 30 minutes without tympanic membrane pressurization, the pump is used for conveying the washing liquid after temperature rise to the filter press for washing, and after the washing liquid feeding is finished, the pressure is maintained for 30 minutes, and the washing is finished. The filter press performs tympanic membrane pressurization again until the drying is finished.
The recovered filtrate is used for preparing the electrolyte, namely the filtrate filtered out by a filter press during washing does not need to be collected separately, and is directly mixed with the filtrate collected during normal liquid preparation and filter pressing to prepare the manganese sulfate electrolyte.
The process technology of the invention does not need to replace and transform the filter press, and does not cause any adverse effect on the original production system.
Drawings
FIG. 1 is a production process diagram of manganese sulfate electrolyte produced by the existing electrolytic manganese factory;
FIG. 2 is a technical diagram of the process of the present invention.
Detailed Description
The invention relates to a process technology for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag, which comprises the following three steps:
the method comprises the following steps: preparing a certain amount of washing liquid from water and a washing agent according to a certain proportion, wherein the proportion of the washing liquid is as follows: a detergent: water = 0.001-0.5, and the amount of the washing liquid is 20-30% of the weight of the slag;
step two: heating the washing liquid to 50-95 ℃;
step three: when the filter press completes the filter pressing process but the tympanic membrane is not pressurized, the heated washing liquid is conveyed to the filter press by a pump for washing, after the washing is completed, the tympanic membrane pressurization is carried out on the filter press until the washing is dried, and the filtrate is recovered for preparing the electrolyte.
Claims (9)
1. A production method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag is characterized by comprising the following steps:
a process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag comprises the steps of washing filter residues at a washing temperature of 50-95 ℃ in a filter pressing procedure of manganese sulfate electrolyte produced in an electrolytic manganese factory;
the method comprises the following steps: preparing washing liquid with the weight of 20-30% of the weight of the slag from water and a washing agent according to a certain proportion;
step two: heating the washing liquid to 50-95 ℃;
step three: when the filter press completes the normal filter pressing procedure but does not pressurize the tympanic membrane, the washing liquid after being heated is conveyed to the filter press by a pump for washing;
step four: after washing, the filter press performs tympanic membrane pressurization again until the tympanic membrane is dried, and the recovered filtrate is used for preparing electrolyte.
2. The method of claim 1, wherein:
the detergent comprises: inorganic acids, organic acids, metal chelating agents, surfactants.
3. The method of claim 2, wherein:
such acids include, but are not limited to: sulfuric acid, carbonic acid, hydrochloric acid, citric acid, formic acid, acetic acid, oxalic acid, sulfosalicylic acid, tartaric acid and gluconic acid.
4. The method of claim 2, wherein:
the class of metal chelators includes, but is not limited to: nitrilotriacetic acid NTA, ethylene diamine tetraacetic acid EDTA, hydroxyethyl ethylene diamine triacetic acid HEDTA, dihydroxyethyl glycine DEG, 1, 2-diaminocyclohexane tetraacetic acid DCYTA, iminodisuccinic acid sodium salt IDS, polyacrylic acid, polymethacrylic acid, hydrolyzed polymaleic anhydride, fumaric acid-acrylic acid copolymer.
5. The method of claim 2, wherein:
the surfactant classes include, but are not limited to: sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium lauryl sulfate, polydimethylsiloxane, triton X-100, alkyl alcohol ether carboxylate, alkyl polyglycoside, alcohol ether phosphate monoester and Gemini surfactant.
6. The method of claim 1, wherein:
the certain proportion is as follows: a detergent: water =0.001 to 0.5.
7. The method of claim 1, wherein:
the washing solution is as follows: according to the following steps of washing agent: water = 0.001-0.5, wherein the detergent used is one or a mixture of several of the detergents described above.
8. The method of claim 1, wherein:
the washing process is that when the filter press finishes normal combined liquid feeding and maintains the pressure for 30 minutes without tympanic membrane pressurization, the pump is used for conveying the washing liquid after temperature rise to the filter press for washing, and after the washing liquid feeding is finished, the pressure is maintained for 30 minutes, and the washing is finished; the filter press performs tympanic membrane pressurization again until the drying is finished.
9. The method of claim 1, wherein:
the recovered filtrate is used for preparing the electrolyte, namely the filtrate filtered out by a filter press during washing does not need to be collected separately, and is directly mixed with the filtrate collected during normal liquid preparation and filter pressing to prepare the manganese sulfate electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210123308.XA CN115532793A (en) | 2022-02-10 | 2022-02-10 | Process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210123308.XA CN115532793A (en) | 2022-02-10 | 2022-02-10 | Process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115532793A true CN115532793A (en) | 2022-12-30 |
Family
ID=84724105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210123308.XA Pending CN115532793A (en) | 2022-02-10 | 2022-02-10 | Process method for reducing soluble manganese and ammonia nitrogen in electrolytic manganese slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115532793A (en) |
-
2022
- 2022-02-10 CN CN202210123308.XA patent/CN115532793A/en active Pending
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