CN110127766A - A kind of preparation process of LITHIUM BATTERY manganese sulfate solution - Google Patents

A kind of preparation process of LITHIUM BATTERY manganese sulfate solution Download PDF

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Publication number
CN110127766A
CN110127766A CN201910587886.7A CN201910587886A CN110127766A CN 110127766 A CN110127766 A CN 110127766A CN 201910587886 A CN201910587886 A CN 201910587886A CN 110127766 A CN110127766 A CN 110127766A
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manganese sulfate
lithium battery
solution
preparation process
manganese
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陈军
訚硕
邓伟明
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Guizhou Zhongwei Resource Recycling Industry Development Co Ltd
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Guizhou Zhongwei Resource Recycling Industry Development Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G45/00Compounds of manganese
    • C01G45/10Sulfates

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a kind of preparation processes of LITHIUM BATTERY manganese sulfate solution, include the following steps: step 1: pyrolusite and pyrite are respectively weighed 15-25 kilograms after the crushing of mineral breaker device respectively, carry out mixing 10-20 minutes, towards sulfuric acid is added in mixed mixed material, stirring is stood after 20-40 minutes to be leached, and manganese sulfate solution is obtained.The technique that the present invention prepares manganese sulfate is prepared using wet process, and operating process will not generate pollution, and production process is relatively simple, labor intensity is reduced, and the utilization rate of manganese is high, reduces the waste of energy consumption and resource, the preparation process of existing manganese sulfate is solved using high-temperature roasting method, but the process of this preparation process is longer, and it is slight big to work, environmental pollution is more serious, and the utilization rate of manganese is very low, the problem of energy consumption of waste is more, waste of resource is suitble to industrialized mass production.

Description

A kind of preparation process of LITHIUM BATTERY manganese sulfate solution
Technical field
The invention belongs to technical field of lithium batteries, more particularly to a kind of preparation process of LITHIUM BATTERY manganese sulfate solution.
Background technique
Manganese sulfate, monohydrate are blush rhomboidal crystal, and relative density 3.50, fusing point is 700 DEG C, is soluble in Water does not dissolve in ethyl alcohol, exists in the form of a variety of hydrates, and manganese sulfate is the micro member that the crop of synthetic fatty acid needs Element, therefore manganese sulfate can be applied as fertilizer into soil, can be increased production.Manganese sulfate is added in animal feed, there is the effect of fattening. Manganese sulfate is also the raw material and analytical reagent for preparing other manganese salts, in the industrial productions such as electrolytic manganese, dyestuff, papermaking and ceramics Also manganese sulfate is used, because easily deliquescing, the scope of application is restricted.Manganese sulfate is non-ignitable, has irritation.Sucking, intake or warp Skin absorbs harmful, tool stimulation.The product dust is sucked for a long time, can cause Chronic Mn Poisoning, in early days with neurasthenic syndrome Based on neurological dysfunction, there is Parkinsonism in advanced stage, harmful to environment, can pollute to water body.
Manganese sulfate is wide application to be obtained in light, electricity, the preparation of magnetic system material, due to LITHIUM BATTERY with a kind of manganese salt Manganese sulfate requires impurity very harsh, it is necessary to potassium, sodium, calcium, magnesium and the huge sum of money that strict control is affected to lithium ion battery The impurity contents such as belong to, and the preparation process of existing manganese sulfate uses high-temperature roasting method, but the process of this preparation process compared with It is long, and it is slight big to work, and environmental pollution is more serious, and the utilization rate of manganese is very low, and the energy consumption of waste is more, waste money Source.
Summary of the invention
The object of the present invention is to provide a kind of preparation processes of LITHIUM BATTERY manganese sulfate solution, are prepared using wet process, behaviour The process of work will not generate pollution, and production process is relatively simple, reduce labor intensity, and the utilization rate of manganese is done, and energy is reduced The waste of consumption and resource, to solve manganese sulfate preparation process in above-mentioned background technique.
The technical scheme to solve the above technical problems is that a kind of preparation process of LITHIUM BATTERY manganese sulfate solution, Include the following steps:
Step 1: pyrolusite and pyrite are respectively weighed 15-25 kilograms after the crushing of mineral breaker device respectively, carried out Mixing 10-20 minutes, towards sulfuric acid is added in mixed mixed material, stirring is stood after 20-40 minutes to be leached, and is obtained Manganese sulfate solution;
Step 2: being added dilute hydrochloric acid into the compounding substances after leaching, is stirred when being added dropwise to mixed material, and Mixture is heated, after being all added dropwise to complete, continue stirring 10-15 minute, stirring after the completion continue it is 5-8 minutes static, Solid precipitating in mixture is waited to keep stablizing;
Step 3: continuing the addition fluoride into mixing liquid and carry out Precipitation to the heavy metal ion in mixture, The time of precipitating is 1-2 hours;
Step 4:, by static 30-50 minutes cooling, thick mistake will be carried out to mixed material using filter screen after precipitating Filter, filter residue carry out filters pressing by filtering equipment, the solution in filter residue are filtered out, 2-5 after filter cake is washed repeatedly by deionized water It is secondary, filters pressing is carried out again, and the pure water or deionized water that filtrate is obtained by RO reverse osmosis membrane filtration first impregnate 10-20min, then will Water filters off, and repetitive operation 2-3 times obtains slightly vulcanizing manganese solution;
Step 5: extractant is added into filtered filtrate and diluent extracts filtrate, obtains refined sulfuric acid Manganese solution;
Step 6: obtained refined sulfuric acid manganese solution is filtered, and filtered solution is by being concentrated by evaporation, cooling knot Crystalline substance obtains LITHIUM BATTERY manganese sulfate.
The present invention uses the preparation process of LITHIUM BATTERY manganese sulfate solution described above, further, pyrolusite in step 1 Passing through smashed grain diameter size with pyrite is 300-500 mesh, and smashed particle passes through drying machine drying 20- 40 minutes, except the moisture in degranulation.
The present invention uses the preparation process of LITHIUM BATTERY manganese sulfate solution described above, further, making in the step 1 The mass fraction of the dilute hydrochloric acid used in sulfuric acid and step 2 is respectively 65-80% and 9.2-10.2.
The present invention uses the preparation process of LITHIUM BATTERY manganese sulfate solution described above, further, the step 1 and step Rapid two operation is arranged under 50-65 degrees Celsius and carries out, dilute hydrochloric acid be added during with 10-15Kg speed hourly into Row addition.
The present invention uses the preparation process of LITHIUM BATTERY manganese sulfate solution described above, further, to filter in step 4 After liquid extraction, the pH value of manganese hydrogen sodium regulating solution is added into solution, is existed using soda acid tester detection solution pH value Between 6.5-8.5.
The present invention uses the preparation process of LITHIUM BATTERY manganese sulfate solution described above, further, the extractant is N, One of N- dioctyl -1- octylame and N, N- bis- (1- methylheptyl) acetamide;The diluent is kerosene and atoleine One of.
The present invention uses the preparation process of LITHIUM BATTERY manganese sulfate solution described above, further, the step 6 filters The filter device filter diameter size used is operated as 5-15 mesh.
The beneficial effects of the present invention are: the technique that the present invention prepares manganese sulfate is prepared using wet process, operating process is not Pollution can be generated, production process is relatively simple, reduces labor intensity, and the utilization rate of manganese is high, reduces energy consumption and resource Waste, the preparation process for solving existing manganese sulfate uses high-temperature roasting method, but the process of this preparation process is longer, and And labour is slight big, environmental pollution is more serious, and the utilization rate of manganese is very low, and the energy consumption of waste is more, and waste of resource is asked Topic is suitble to industrialized mass production.
Specific embodiment
Hereinafter, by the embodiment of the preparation process referring to LITHIUM BATTERY manganese sulfate solution of the invention.
The embodiment recorded herein is specific specific embodiment of the invention, for illustrating design of the invention, Be it is explanatory and illustrative, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein Outside embodiment, those skilled in the art can also based on the claim of this application book and specification disclosure of that using aobvious and The other technical solutions being clear to, these technical solutions include using any obvious to making for the embodiment recorded herein The technical solution of substitutions and modifications.
This specification aids in illustrating design of the invention, it is schematically indicated the shape and its correlation of each section.
A kind of preparation process of LITHIUM BATTERY manganese sulfate solution of an embodiment of the present invention, includes the following steps:
Step 1: pyrolusite and pyrite are respectively weighed 15-25 kilograms after the crushing of mineral breaker device respectively, carried out Mixing 10-20 minutes, towards sulfuric acid is added in mixed mixed material, stirring is stood after 20-40 minutes to be leached, and is obtained Manganese sulfate solution, pyrolusite and pyrite are 300-500 mesh by smashed grain diameter size in step 1, after crushing Particle pass through drying machine drying 20-40 minutes, except the moisture in degranulation;
Step 2: being added dilute hydrochloric acid into the compounding substances after leaching, is stirred when being added dropwise to mixed material, and Mixture is heated, after being all added dropwise to complete, continue stirring 10-15 minute, stirring after the completion continue it is 5-8 minutes static, Solid precipitating in mixture is waited to keep stablizing, the quality point of the dilute hydrochloric acid used in sulfuric acid used in step 1 and step 2 Number is respectively 65-80% and 9.2-10.2, and the operation of step 1 and step 2 is arranged under 50-65 degrees Celsius and carries out, dilute salt Acid is added during being added with 10-15Kg speed hourly;
Step 3: continuing the addition fluoride into mixing liquid and carry out Precipitation to the heavy metal ion in mixture, The time of precipitating is 1-2 hours;
Step 4:, by static 30-50 minutes cooling, thick mistake will be carried out to mixed material using filter screen after precipitating Filter, filter residue carry out filters pressing by filtering equipment, the solution in filter residue are filtered out, 2-5 after filter cake is washed repeatedly by deionized water It is secondary, filters pressing is carried out again, and the pure water or deionized water that filtrate is obtained by RO reverse osmosis membrane filtration first impregnate 10-20min, then will Water filters off, and repetitive operation 2-3 times obtains slightly vulcanizing manganese solution, in step 4 after extracting to filtrate, carbon is added into solution Sour hydrogen sodium adjusts the pH value of solution, using soda acid tester detection solution pH value between 6.5-8.5;
Step 5: extractant is added into filtered filtrate and diluent extracts filtrate, obtains refined sulfuric acid Manganese solution;
Step 6: obtained refined sulfuric acid manganese solution is filtered, and filtered solution is by being concentrated by evaporation, cooling knot Crystalline substance, obtains LITHIUM BATTERY manganese sulfate, and one in extractant N, N- dioctyl -1- octylame and N, N- bis- (1- methylheptyl) acetamide Kind;Diluent be one of kerosene and atoleine, the filter device filter diameter size that step 6 filter operation uses for 5-15 mesh.
Embodiment one:
A kind of preparation process of LITHIUM BATTERY manganese sulfate solution, includes the following steps:
Step 1: pyrolusite and pyrite are respectively weighed 15 kilograms after the crushing of mineral breaker device respectively, mixed It closes 10 minutes, towards sulfuric acid is added in mixed mixed material, stirring is stood after twenty minutes to be leached, and it is molten to obtain manganese sulfate Liquid, pyrolusite and pyrite are 300 mesh by smashed grain diameter size, and smashed particle is dried by dryer It is 20 minutes dry, except the moisture in degranulation;
Step 2: being added dilute hydrochloric acid into the compounding substances after leaching, is stirred when being added dropwise to mixed material, and Mixture is heated, after being all added dropwise to complete, continues stirring 10 minutes, continues static 5 minutes after the completion of stirring, wait mixed It closes solid precipitating in object to keep stablizing, the mass fraction of the dilute hydrochloric acid of use is respectively 65% and 9.2, and operation temperature is arranged at It is carried out under 50 degrees Celsius, dilute hydrochloric acid is added during being added with 10Kg speed hourly;
Step 3: continuing the addition fluoride into mixing liquid and carry out Precipitation to the heavy metal ion in mixture, The time of precipitating is 1 hour;
Step 4:, by static cooling 30 minutes, coarse filtration, filter will be carried out to mixed material using filter screen after precipitating Slag by filtering equipment carry out filters pressing, the solution in filter residue is filtered out, filter cake by deionized water wash repeatedly after 2 times, again Filters pressing is carried out, the pure water or deionized water that filtrate is obtained by RO reverse osmosis membrane filtration first impregnate 10-20min, then water is filtered off, It repetitive operation 2 times, obtains slightly vulcanizing manganese solution, after extracting to filtrate, manganese hydrogen sodium regulating solution is added into solution PH value, using soda acid tester detection solution pH value 6.5;
Step 5: extractant is added into filtered filtrate and diluent extracts filtrate, obtains refined sulfuric acid Manganese solution;
Step 6: obtained refined sulfuric acid manganese solution is filtered, and filtered solution is by being concentrated by evaporation, cooling knot Crystalline substance, obtains LITHIUM BATTERY manganese sulfate, and one in extractant N, N- dioctyl -1- octylame and N, N- bis- (1- methylheptyl) acetamide Kind;Diluent is one of kerosene and atoleine, and the filter device filter diameter size that filter operation uses is 5 mesh.
Embodiment two: the difference between this embodiment and the first embodiment lies in:
A kind of preparation process of LITHIUM BATTERY manganese sulfate solution, includes the following steps:
Step 1: pyrolusite and pyrite are respectively weighed 16 kilograms after the crushing of mineral breaker device respectively, mixed It closes 15 minutes, towards sulfuric acid is added in mixed mixed material, stirring is stood after twenty minutes to be leached, and it is molten to obtain manganese sulfate Liquid, pyrolusite and pyrite are 350 mesh by smashed grain diameter size, and smashed particle is dried by dryer It is 25 minutes dry, except the moisture in degranulation;
Step 2: being added dilute hydrochloric acid into the compounding substances after leaching, is stirred when being added dropwise to mixed material, and Mixture is heated, after being all added dropwise to complete, continues stirring 15 minutes, continues static 8 minutes after the completion of stirring, wait mixed It closes solid precipitating in object to keep stablizing, the mass fraction of the dilute hydrochloric acid of use is respectively 705% and 10, and operation temperature is arranged at It is carried out under 50 degrees Celsius, dilute hydrochloric acid is added during being added with 12Kg speed hourly;
Step 3: continuing the addition fluoride into mixing liquid and carry out Precipitation to the heavy metal ion in mixture, The time of precipitating is 1.5 hours;
Step 4:, by static cooling 35 minutes, coarse filtration, filter will be carried out to mixed material using filter screen after precipitating Slag by filtering equipment carry out filters pressing, the solution in filter residue is filtered out, filter cake by deionized water wash repeatedly after 2 times, again Filters pressing is carried out, the pure water or deionized water that filtrate is obtained by RO reverse osmosis membrane filtration first impregnate 10-20min, then water is filtered off, It repetitive operation 3 times, obtains slightly vulcanizing manganese solution, after extracting to filtrate, manganese hydrogen sodium regulating solution is added into solution PH value, using soda acid tester detection solution pH value 7;
Step 5: extractant is added into filtered filtrate and diluent extracts filtrate, obtains refined sulfuric acid Manganese solution;
Step 6: obtained refined sulfuric acid manganese solution is filtered, and filtered solution is by being concentrated by evaporation, cooling knot Crystalline substance, obtains LITHIUM BATTERY manganese sulfate, and one in extractant N, N- dioctyl -1- octylame and N, N- bis- (1- methylheptyl) acetamide Kind;Diluent is one of kerosene and atoleine, and the filter device filter diameter size that filter operation uses is 8 mesh.
Embodiment three: the present embodiment and the difference of embodiment one and embodiment two are:
A kind of preparation process of LITHIUM BATTERY manganese sulfate solution, includes the following steps:
Step 1: pyrolusite and pyrite are respectively weighed 25 kilograms after the crushing of mineral breaker device respectively, mixed It closes 20 minutes, towards sulfuric acid is added in mixed mixed material, stirring is stood after forty minutes to be leached, and it is molten to obtain manganese sulfate Liquid, pyrolusite and pyrite are 500 mesh by smashed grain diameter size in step 1, and smashed particle passes through Drying machine drying 40 minutes, except the moisture in degranulation;
Step 2: being added dilute hydrochloric acid into the compounding substances after leaching, is stirred when being added dropwise to mixed material, and Mixture is heated, after being all added dropwise to complete, continues stirring 15 minutes, continues static 8 minutes after the completion of stirring, wait mixed It closes solid precipitating in object to keep stablizing, the mass fraction difference of the dilute hydrochloric acid used in sulfuric acid used in step 1 and step 2 For 80% and 10.2, the operation of step 1 and step 2 is arranged under 65 degrees Celsius and carries out, dilute hydrochloric acid be added during with 15Kg speed hourly is added;
Step 3: continuing the addition fluoride into mixing liquid and carry out Precipitation to the heavy metal ion in mixture, The time of precipitating is 2 hours;
Step 4:, by static cooling 50 minutes, coarse filtration, filter will be carried out to mixed material using filter screen after precipitating Slag by filtering equipment carry out filters pressing, the solution in filter residue is filtered out, filter cake by deionized water wash repeatedly after 5 times, again Filters pressing is carried out, the pure water or deionized water that filtrate is obtained by RO reverse osmosis membrane filtration first impregnate 20min, then water is filtered off, weight It operates 3 times again, obtains slightly vulcanizing manganese solution, in step 4 after being extracted to filtrate, sodium bicarbonate is added into solution and adjusts The pH value of solution, using soda acid tester detection solution pH value between 8.5;
Step 5: extractant is added into filtered filtrate and diluent extracts filtrate, obtains refined sulfuric acid Manganese solution;
Step 6: obtained refined sulfuric acid manganese solution is filtered, and filtered solution is by being concentrated by evaporation, cooling knot Crystalline substance, obtains LITHIUM BATTERY manganese sulfate, and one in extractant N, N- dioctyl -1- octylame and N, N- bis- (1- methylheptyl) acetamide Kind;Diluent be one of kerosene and atoleine, the filter device filter diameter size that step 6 filter operation uses for 15 mesh.
Each technical characteristic of above-mentioned disclosure is not limited to disclosed and other feature combination, and those skilled in the art are also Can carry out other combinations between each technical characteristic according to the purpose of invention, be subject to realize the present invention purpose.

Claims (7)

1. a kind of preparation process of LITHIUM BATTERY manganese sulfate solution, which comprises the steps of:
Step 1: pyrolusite and pyrite are respectively weighed 15-25 kilograms after the crushing of mineral breaker device respectively, mixed 10-20 minutes, towards sulfuric acid is added in mixed mixed material, stirring is stood after 20-40 minutes to be leached, and obtained sulfuric acid Manganese solution;
Step 2: being added dilute hydrochloric acid into the compounding substances after leaching, is stirred when being added dropwise to mixed material, and to mixed It closes object to be heated, after being all added dropwise to complete, continues stirring 10-15 minutes, continue 5-8 minutes static, waiting after the completion of stirring Solid precipitating keeps stablizing in mixture;
Step 3: continue to be added fluoride into mixing liquid to the heavy metal ion progress Precipitation in mixture, precipitating Time be 1-2 hours;
Step 4:, by static 30-50 minutes cooling, coarse filtration, filter will be carried out to mixed material using filter screen after precipitating Slag carries out filters pressing by filtering equipment, and the solution in filter residue is filtered out, and filter cake passes through after deionized water is washed repeatedly 2-5 times, then Secondary carry out filters pressing, the pure water or deionized water that filtrate is obtained by RO reverse osmosis membrane filtration first impregnate 10-20min, then water is filtered It goes, repetitive operation 2-3 times, obtains slightly vulcanizing manganese solution;
Step 5: extractant is added into filtered filtrate and diluent extracts filtrate, it is molten to obtain refined sulfuric acid manganese Liquid;
Step 6: obtained refined sulfuric acid manganese solution is filtered, and filtered solution is by being concentrated by evaporation, crystallisation by cooling, Obtain LITHIUM BATTERY manganese sulfate.
2. a kind of preparation process of LITHIUM BATTERY manganese sulfate solution according to claim 1, which is characterized in that soft in step 1 It is 300-500 mesh that manganese ore and pyrite, which pass through smashed grain diameter size, and smashed particle passes through dryer and dries It is 20-40 minutes dry, except the moisture in degranulation.
3. a kind of preparation process of LITHIUM BATTERY manganese sulfate solution according to claim 1, which is characterized in that the step 1 Used in the mass fraction of dilute hydrochloric acid that uses in sulfuric acid and step 2 be respectively 65-80% and 9.2-10.2.
4. a kind of preparation process of LITHIUM BATTERY manganese sulfate solution according to claim 1, it is characterised in that: the step 1 Operation with step 2 is arranged under 50-65 degrees Celsius and carries out, with 10-15Kg speed hourly during dilute hydrochloric acid addition Degree is added.
5. a kind of preparation process of LITHIUM BATTERY manganese sulfate solution according to claim 1, which is characterized in that in step 4 After filtrate extraction, the pH value of manganese hydrogen sodium regulating solution is added into solution, detects solution PH using soda acid tester Value is between 6.5-8.5.
6. a kind of preparation process of LITHIUM BATTERY manganese sulfate solution according to claim 1, which is characterized in that the extractant For N, one of N- dioctyl -1- octylame and N, N- bis- (1- methylheptyl) acetamide;The diluent is kerosene and liquid One of paraffin.
7. a kind of preparation process of LITHIUM BATTERY manganese sulfate solution according to claim 1, which is characterized in that the step 6 The filter device filter diameter size that filter operation uses is 5-15 mesh.
CN201910587886.7A 2019-07-02 2019-07-02 A kind of preparation process of LITHIUM BATTERY manganese sulfate solution Pending CN110127766A (en)

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US4002717A (en) * 1975-01-09 1977-01-11 Deepsea Ventures, Inc. Refining of manganese oxide ores
CN1311340A (en) * 2000-02-28 2001-09-05 邓建成 Method for producing manganese carbonate from manganese sulfate in waste manganese mud
CN101337692A (en) * 2008-08-21 2009-01-07 广西远辰锰业有限公司 Method for producing manganese sulfate monohydrate crystal using pyrolusite and waste acid as raw material
CN102212697A (en) * 2011-05-18 2011-10-12 湖南稀土金属材料研究院 Tungsten slag treatment method
US20130037416A1 (en) * 2010-07-15 2013-02-14 Guangxi Non-Ferrous Metals Group Huiyuanmengye Co., Ltd. Method for producing mercury-free alkaline-manganese type electrolyzed manganese dioxide
CN103466713A (en) * 2013-08-27 2013-12-25 中南大学 Method for preparing manganese sulfate monohydrate with low-grade manganese ore through primary crystallization by high-pressure method
CN104195331A (en) * 2014-09-02 2014-12-10 湖南科技大学 Method for preparing high-purity manganese sulfate through extracting low-grade pyrolusite by using rice straw
CN107447110A (en) * 2017-07-07 2017-12-08 北京盖雅环境科技有限公司 A kind of preparation method of LITHIUM BATTERY manganese sulfate
CN108711656A (en) * 2018-08-24 2018-10-26 广西师范大学 A kind of recoverying and utilizing method of waste and old lithium ion battery
CN109868373A (en) * 2019-02-02 2019-06-11 广东芳源环保股份有限公司 A method of substep leaching nickel, cobalt from nickel, cobalt, manganese mixture

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002717A (en) * 1975-01-09 1977-01-11 Deepsea Ventures, Inc. Refining of manganese oxide ores
CN1311340A (en) * 2000-02-28 2001-09-05 邓建成 Method for producing manganese carbonate from manganese sulfate in waste manganese mud
CN101337692A (en) * 2008-08-21 2009-01-07 广西远辰锰业有限公司 Method for producing manganese sulfate monohydrate crystal using pyrolusite and waste acid as raw material
US20130037416A1 (en) * 2010-07-15 2013-02-14 Guangxi Non-Ferrous Metals Group Huiyuanmengye Co., Ltd. Method for producing mercury-free alkaline-manganese type electrolyzed manganese dioxide
CN102212697A (en) * 2011-05-18 2011-10-12 湖南稀土金属材料研究院 Tungsten slag treatment method
CN102212697B (en) * 2011-05-18 2013-07-10 湖南稀土金属材料研究院 Tungsten slag treatment method
CN103466713A (en) * 2013-08-27 2013-12-25 中南大学 Method for preparing manganese sulfate monohydrate with low-grade manganese ore through primary crystallization by high-pressure method
CN104195331A (en) * 2014-09-02 2014-12-10 湖南科技大学 Method for preparing high-purity manganese sulfate through extracting low-grade pyrolusite by using rice straw
CN107447110A (en) * 2017-07-07 2017-12-08 北京盖雅环境科技有限公司 A kind of preparation method of LITHIUM BATTERY manganese sulfate
CN108711656A (en) * 2018-08-24 2018-10-26 广西师范大学 A kind of recoverying and utilizing method of waste and old lithium ion battery
CN109868373A (en) * 2019-02-02 2019-06-11 广东芳源环保股份有限公司 A method of substep leaching nickel, cobalt from nickel, cobalt, manganese mixture

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